All of the current answers are wrong in some cases as they do not consider that timezones change their offset relative to UTC. So in some cases adding 24h is different from adding a calendar day.
Nội dung chính ShowShow
- Proposed solution
- Tested Code
- Test results
- Tổng Quan
- Gần Đây Mình Có Lào Việc Nhiều Với Kiểu Dữ Liệu Datetime Trong Python. Vấn Đề Mình Và Sau Đây, Mình Sẽ Viết Bài Chia Sẻ Về Cách Mình Xử Lý Kiểu Dữ Liệu Datetime Trong Python. Trong bào mình sẽ sử dụng python 3 để xử lý kiểu dữ liệu datetime.
- Nội phân chính
- Mẹo 1: Chuẩn Hón muy gi ử sử dụng
- Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
- Tips 5: Convert UTC sang timezone khác
- Tips 6: Chuyên từ Timestamp sang Datetime
- Tips 7: Convert Datetime sang ISO 8601
- Example 1: datetime to string using strftime[]
- How strftime[] works?
- Example 2: Creating string from a timestamp
- Format Code List
- Ví dụ 3: Ngày và giờ thích hợp của địa phương
- Chúng ta có thể chuyển đổi định dạng chuỗi thành DateTime bằng cách sử dụng hàm strptime []. Chúng tôi sẽ sử dụng định dạng '%Y/%M/%D' để đưa chuỗi vào DateTime ..
- Từ DateTime Nhập DateTime ..
- date_time_obj = DateTime. Strptime [date_time_str, '%d/%m/%y%h:%m:%s'].
Proposed solution
Tested Code
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
Tested Code
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
Test results
Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
Tổng Quan
Gần Đây Mình Có Lào Việc Nhiều Với Kiểu Dữ Liệu Datetime Trong Python. Vấn Đề Mình Và Sau Đây, Mình Sẽ Viết Bài Chia Sẻ Về Cách Mình Xử Lý Kiểu Dữ Liệu Datetime Trong Python. Trong bào mình sẽ sử dụng python 3 để xử lý kiểu dữ liệu datetime.
Nội phân chính
- Tổng Quan
- Gần Đây Mình Có Lào Việc Nhiều Với Kiểu Dữ Liệu Datetime Trong Python. Vấn Đề Mình Và Sau Đây, Mình Sẽ Viết Bài Chia Sẻ Về Cách Mình Xử Lý Kiểu Dữ Liệu Datetime Trong Python. Trong bào mình sẽ sử dụng python 3 để xử lý kiểu dữ liệu datetime.
- Nội phân chính
- Mẹo 1: Chuẩn Hón muy gi ử sử dụng
- Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
- Tips 5: Convert UTC sang timezone khác
- Tips 6: Chuyên từ Timestamp sang Datetime
- Tips 7: Convert Datetime sang ISO 8601
- Example 1: datetime to string using strftime[]
- How strftime[] works?
- Example 2: Creating string from a timestamp
- Format Code List
- Ví dụ 3: Ngày và giờ thích hợp của địa phương
- Chúng ta có thể chuyển đổi định dạng chuỗi thành DateTime bằng cách sử dụng hàm strptime []. Chúng tôi sẽ sử dụng định dạng '%Y/%M/%D' để đưa chuỗi vào DateTime ..
- Từ DateTime Nhập DateTime ..
- date_time_obj = DateTime. Strptime [date_time_str, '%d/%m/%y%h:%m:%s'].
- The following solution works for Samoa and keeps the local time constant.
Nội phân chính
- Tổng Quan
- Gần Đây Mình Có Lào Việc Nhiều Với Kiểu Dữ Liệu Datetime Trong Python. Vấn Đề Mình Và Sau Đây, Mình Sẽ Viết Bài Chia Sẻ Về Cách Mình Xử Lý Kiểu Dữ Liệu Datetime Trong Python. Trong bào mình sẽ sử dụng python 3 để xử lý kiểu dữ liệu datetime.
- Nội phân chính
- Mẹo 1: Chuẩn Hón muy gi ử sử dụng
- Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
- Tips 5: Convert UTC sang timezone khác
- Tips 6: Chuyên từ Timestamp sang Datetime
- Tips 7: Convert Datetime sang ISO 8601
- Example 1: datetime to string using strftime[]
- How strftime[] works?
- Example 2: Creating string from a timestamp
- Format Code List
- Ví dụ 3: Ngày và giờ thích hợp của địa phương
- Chúng ta có thể chuyển đổi định dạng chuỗi thành DateTime bằng cách sử dụng hàm strptime []. Chúng tôi sẽ sử dụng định dạng '%Y/%M/%D' để đưa chuỗi vào DateTime ..
- Từ DateTime Nhập DateTime ..
- date_time_obj = DateTime. Strptime [date_time_str, '%d/%m/%y%h:%m:%s'].
- The following solution works for Samoa and keeps the local time constant.
Gần Đây Mình Có Lào Việc Nhiều Với Kiểu Dữ Liệu Datetime Trong Python. Vấn Đề Mình Và Sau Đây, Mình Sẽ Viết Bài Chia Sẻ Về Cách Mình Xử Lý Kiểu Dữ Liệu Datetime Trong Python. Trong bào mình sẽ sử dụng python 3 để xử lý kiểu dữ liệu datetime.
Nội phân chính
Mẹo 1: Chuẩn Hón muy gi ử sử dụng
Nội phân chính
Mẹo 1: Chuẩn Hón muy gi ử sử dụng
import datetime
import pytz
from dateutil.parser import parse
# Dạng string time
date_string = '2019-03-20T03:41:16Z'
# Dạng datetime format
date_time_python = parse[date_string]
Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
import datetime
import pytz
from dateutil.parser import parse
# Dạng string time
date_string = '2019-03-21 03:41:16'
# Strptime
format = '%Y-%m-%d %H:%M:%S'
date_time_python = datetime.datetime.strptime[date_string, format]
Tips 5: Convert UTC sang timezone khác
- Tips 6: Chuyên từ Timestamp sang Datetime
- Tips 7: Convert Datetime sang ISO 8601
Mẹo 1: Chuẩn Hón muy gi ử sử dụng
Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
import datetime
# Dạng datetime
date_time_now = datetime.datetime.now[]
# Dạng timestamp
timestamp_now = date_time_now.timestamp[]
Mẹo 2: Chuyển đổi Chuỗi ThànH DateTime
Tips 5: Convert UTC sang timezone khác
import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
Tips 6: Chuyên từ Timestamp sang Datetime
Tips 5: Convert UTC sang timezone khác
Tips 6: Chuyên từ Timestamp sang Datetime
import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
Tips 6: Chuyên từ Timestamp sang Datetime
import datetime
date_time_now = datetime.datetime.now[]
timestamp_now = date_time_now.timestamp[]
# Convert timestamp thành dạng Datetime
timestamp_to_datetime = datetime.datetime.fromtimestamp[timestamp_now]
Tips 7: Convert Datetime sang ISO 8601
ISO 8601 là một tiêu chuẩn quốc tế, được đưa ra bởi Tổ chức tiêu chuẩn hóa quốc tế [ISO] lần đầu tiên năm 1988, mô tả quy cách viết ngày tháng và thời gian theo cách đơn giản nhất mà máy tính có thể hiểu được. Còn đối với Python ISO 8601 Datetime là string format time thông dụng.
import datetime
date_time_now = datetime.datetime.now[]
# Convert Datetime thành dạng ISO 8601
iso_format = date_time_now.isoformat[]
Nguồn
//vi.wikipedia.org/wiki/Th%E1%BA%A3o_lu%E1%BA%ADn:M%C3%BAi_gi%E1%BB%9D
//vi.wikipedia.org/wiki/Th%E1%BA%A3o_lu%E1%BA%ADn:M%C3%BAi_gi%E1%BB%9D
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Possible Duplicate: How to convert a time to a string How to convert a time to a string
How to convert a time to a stringNội dung chính
- Example 1: datetime to string using strftime[]
- How strftime[] works?
- Example 2: Creating string from a timestamp
- Format Code List
- Example 3: Locale's appropriate date and time
- How do I change date format from YYYY MM DD in Python?
- How do you change a date format from a string in Python?
- How do I convert datetime to date format?
- How do I change the date format from YYYY MM DD in pandas?
I have
Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
4 variable as shown in the below code.# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
0Using python, how to convert it to the following format?
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
1asked Jun 9, 2011 at 6:27Jun 9, 2011 at 6:27Jun 9, 2011 at 6:27
2
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
2In pre-2.5 Python, you can replace
Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
5 with Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
6, like so [untested]: Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
7answered Jun 9, 2011 at 6:30Jun 9, 2011 at 6:30Jun 9, 2011 at 6:30
NPENPENPENPE
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1
@Tim's answer only does half the work -- that gets it into a datetime.datetime object.
To get it into the string format you require, you use datetime.strftime:
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
3answered Jun 9, 2011 at 6:31Jun 9, 2011 at 6:31Jun 9, 2011 at 6:31
mgiucamgiucamgiucamgiuca
20.6k6 gold badges52 silver badges70 bronze badges6 gold badges52 silver badges70 bronze badges6 gold badges52 silver badges70 bronze badges
1
The
Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
8 method returns a string representing date and time using date, time or datetime object.Example 1: datetime to string using strftime[]
How strftime[] works?
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
4Example 2: Creating string from a timestamp
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
5Format Code List
How strftime[] works?
Example 2: Creating string from a timestamp
- Format Code List
- Example 3: Locale's appropriate date and time
- How do I change date format from YYYY MM DD in Python?
- How do you change a date format from a string in Python?
Example 2: Creating string from a timestamp
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
6Format Code List
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
7Format Code List
Example 3: Locale's appropriate date and time
How do I change date format from YYYY MM DD in Python? | How do you change a date format from a string in Python? | How do I convert datetime to date format? |
How do I change the date format from YYYY MM DD in pandas? | I have | 4 variable as shown in the below code. 0 |
Using python, how to convert it to the following format? | asked Jun 9, 2011 at 6:27Jun 9, 2011 at 6:27 | In pre-2.5 Python, you can replace |
5 with 6, like so [untested]: 7 | answered Jun 9, 2011 at 6:30Jun 9, 2011 at 6:30 | NPENPENPE |
470k103 gold badges921 silver badges994 bronze badges103 gold badges921 silver badges994 bronze badges | @Tim's answer only does half the work -- that gets it into a datetime.datetime object. | To get it into the string format you require, you use datetime.strftime: |
answered Jun 9, 2011 at 6:31Jun 9, 2011 at 6:31 | mgiucamgiucamgiuca | 20.6k6 gold badges52 silver badges70 bronze badges6 gold badges52 silver badges70 bronze badges |
The | 8 method returns a string representing date and time using date, time or datetime object. | How do I change the date format from YYYY MM DD in pandas? |
I have 4 variable as shown in the below code. | Using python, how to convert it to the following format? | asked Jun 9, 2011 at 6:27 |
In pre-2.5 Python, you can replace 5 with 6, like so [untested]: 7 | answered Jun 9, 2011 at 6:30 | NPENPE |
470k103 gold badges921 silver badges994 bronze badges | @Tim's answer only does half the work -- that gets it into a datetime.datetime object. | To get it into the string format you require, you use datetime.strftime: |
answered Jun 9, 2011 at 6:31 | mgiucamgiuca | 20.6k6 gold badges52 silver badges70 bronze badges |
The 8 method returns a string representing date and time using date, time or datetime object. | The program below converts a 9 object containing current date and time to different string formats. | When you run the program, the output will something like be: |
Here, year, day, time and date_time are strings, whereas now is a 9 object. | In the above program, 1, 2, 3 etc. are format codes. The 8 method takes one or more format codes as an argument and returns a formatted string based on it. | We imported 9 class from the 9 module. It's because the object of 9 class can access 8 method. |
The 9 object containing current date and time is stored in now variable. | The 8 method can be used to create formatted strings. | 01, 02, ..., 31 |
7 | Day of the month as a decimal number. | 1, 2, ..., 30 |
8 | Abbreviated month name. | The table below shows all the codes that you can pass to the 8 method. |
Directive | Meaning | Example |
3 | Abbreviated weekday name. | Sun, Mon, ... |
4 | Full weekday name. | Sunday, Monday, ... |
5 | Weekday as a decimal number. | 0, 1, ..., 6 |
3 | Day of the month as a zero-padded decimal. | Sunday, Monday, ... |
5 | Weekday as a decimal number. | 0, 1, ..., 6 |
3 | Day of the month as a zero-padded decimal. | 0, 1, ..., 59 |
4 | Microsecond như một số thập phân, không được dán bên trái. | 000000 - 999999 |
5 | UTC bù ở dạng +hhmm hoặc -hhmm. | 000000 - 999999 |
5 | UTC bù ở dạng +hhmm hoặc -hhmm. | & nbsp; |
6 | Tên múi giờ. | 7 |
Ngày trong năm dưới dạng số thập phân không có viền. | 001, 002, ..., 366 | 8 |
Ngày trong năm dưới dạng số thập phân. | 1, 2, ..., 366 | 8 |
Ngày trong năm dưới dạng số thập phân. | 1, 2, ..., 366 | 9 |
Số tuần của năm [Chủ nhật là ngày đầu tiên của tuần]. Tất cả các ngày trong một năm mới trước Chủ nhật đầu tiên được coi là vào tuần 0. | 00, 01, ..., 53 | 0 |
Số tuần của năm [thứ Hai là ngày đầu tiên của tuần]. Tất cả các ngày trong một năm mới trước ngày thứ Hai đầu tiên được coi là vào tuần 0. | 1 | Đại diện ngày và thời gian thích hợp của địa phương. |
Thứ Hai ngày 30 tháng 9 07:06:05 2013 | 2 | Đại diện ngày thích hợp của địa phương. |
07:06:05
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
8import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
4# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day[today]:
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
tomorrow_utc_tz = tomorrow_utc_tz.replace[hour=today.hour,
minute=today.minute,
second=today.second]
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion[today]:
# Correct for Samoa, but dst shift
today_utc = today.astimezone[datetime.timezone.utc]
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta[days=1]
tomorrow_utc_tz = tomorrow_utc.astimezone[tz]
return tomorrow_utc_tz
def add_day_dateutil_relativedelta[today]:
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta[days=1]
def add_day_datetime_timedelta[today]:
# WRONG!
return today + datetime.timedelta[days=1]
# Test cases
def test_samoa[add_day]:
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See //stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone['Pacific/Apia']
today_utc = datetime.datetime[2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2011-12-29T23:59:00-10:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2011-12-31T23:59:00+14:00'
def test_dst[add_day]:
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone['Europe/Berlin']
today_utc = datetime.datetime[2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc]
today_tz = today_utc.astimezone[tz] # 2018-03-25T01:59:00+01:00
tomorrow = add_day[today_tz]
return tomorrow.isoformat[] == '2018-03-26T01:59:00+02:00'
to_test = [[add_day_dateutil_relativedelta, 'relativedelta'],
[add_day_datetime_timedelta, 'timedelta'],
[add_day_datetime_timedelta_conversion, 'timedelta+conversion'],
[add_day, 'timedelta+conversion+dst']]
print['{:5} {:>5}'.format['Method', 'Samoa', 'DST']]
for method, name in to_test:
print['{:5} {:>5}'
.format[name,
test_samoa[method],
test_dst[method]]]
930/09/13
import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
3 Đại diện thời gian thích hợp của địa phương.
Một nhân vật '%' theo nghĩa đen..
Phần trăm
Ví dụ 3: Ngày và giờ thích hợp của địa phươngKhi bạn chạy chương trình, đầu ra sẽ là:.
Mã định dạngimport datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
1, import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
2 và import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
3 được sử dụng để biểu diễn ngày và thời gian thích hợp của địa phương.Chúng tôi cũng đề nghị & nbsp; bạn kiểm tra Python Strptime []. Phương thức
import datetime
import pytz
# Dạng native date
date_time_now = datetime.datetime.now[]
print[date_time_now.tzname[]]
# Dạng utc
UTC = pytz.utc
date_time_utc_now = UTC.localize[date_time_now]
print[date_time_utc_now.tzname[]]
# Dạng 'Asia/Ho_Chi_Minh'
VN_TZ = pytz.timezone['Asia/Ho_Chi_Minh']
date_time_vntz_now = date_time_utc_now.astimezone[VN_TZ]
print[date_time_vntz_now.tzname[]]
8 tạo đối tượng Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
9 từ một chuỗi.Làm cách nào để thay đổi định dạng ngày từ yyyy mm dd trong python?
Chúng ta có thể chuyển đổi định dạng chuỗi thành DateTime bằng cách sử dụng hàm strptime []. Chúng tôi sẽ sử dụng định dạng '%Y/%M/%D' để đưa chuỗi vào DateTime ..
Đầu vào là chuỗi DateTime ..
Định dạng là định dạng-'Yyyy-MM-DD'.
DateTime là mô -đun ..use the CONVERT[] , TRY_CONVERT[] , or CAST[] function.
Làm thế nào để bạn thay đổi định dạng ngày từ một chuỗi trong Python?
Từ DateTime Nhập DateTime ..
date_time_str = '18/09/19 01:55:19 '.use the CONVERT[] , TRY_CONVERT[] , or CAST[] function.
date_time_obj = DateTime. Strptime [date_time_str, '%d/%m/%y%h:%m:%s'].
In ["Loại ngày là bây giờ", loại [DATE_TIME_OBJ]].