Hướng dẫn python replace words in string from list - python thay thế các từ trong chuỗi từ danh sách

Cải thiện bài viết

Lưu bài viết

Cải thiện bài viết

Lưu bài viết

Đọcreplace() in Python returns a copy of the string where all occurrences of a substring are replaced with another substring. 

Bàn luận

Việc thay thế () trong Python trả về một bản sao của chuỗi trong đó tất cả các lần xuất hiện của một chuỗi con được thay thế bằng một chuỗi con khác. & NBSP; string.replace(old, new, count)

Parameters: 

• Cú pháp thay thế () old substring you want to replace.
• Cú pháp: String.replace (cũ, mới, đếm) new substring which would replace the old substring.
• Cũ - con cũ bạn muốn thay thế. (Optional ) the number of times you want to replace the old substring with the new substring. 

MỚI - Chất nền mới sẽ thay thế cho bộ nền cũ.It returns a copy of the string where all occurrences of a substring are replaced with another substring. 

Đếm - (Tùy chọn) Số lần bạn muốn thay thế bộ con cũ bằng bộ nền mới. & NBSP;

Giá trị trả về: Nó trả về một bản sao của chuỗi trong đó tất cả các lần xuất hiện của một chuỗi con được thay thế bằng một chuỗi con khác. & NBSP;

Python3

Thay thế tất cả các phiên bản của một ký tự bằng cách sử dụng thay thế ()

Trong ví dụ này, chúng tôi chỉ thay thế một ký tự duy nhất từ ​​một chuỗi đã cho. Phương thức thay thế python () là nhạy cảm trường hợp, và do đó nó thực hiện thay thế chuỗi con nhạy cảm trường hợp, tức là r trong không thay đổi.

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

grrks FOR grrks
geeks FOR geeks

>>> import re >>> prohibitedWords = ['Some', 'Random', 'Words'] >>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords))) >>> the_message = big_regex.sub("", 'this message contains Some really Random Words') >>> the_message 'this message contains really ' 8>>> import re >>> prohibitedWords = ['Some', 'Random', 'Words'] >>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords))) >>> the_message = big_regex.sub("", 'this message contains Some really Random Words') >>> the_message 'this message contains really ' 6 >>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 0>>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 1>>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 2223 >>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 4

Đầu ra: & nbsp;

Python3

Thay thế tất cả các phiên bản của chuỗi

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

geeks for geeks 
geeks for geeks
GeeksforGeeks for GeeksforGeeks 
GeeksforGeeks for GeeksforGeeks

>>> import re >>> prohibitedWords = ['Some', 'Random', 'Words'] >>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords))) >>> the_message = big_regex.sub("", 'this message contains Some really Random Words') >>> the_message 'this message contains really ' 8>>> import re >>> prohibitedWords = ['Some', 'Random', 'Words'] >>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords))) >>> the_message = big_regex.sub("", 'this message contains Some really Random Words') >>> the_message 'this message contains really ' 6 >>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 0>>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 1>>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 2223 >>> words = ['random', 'words'] >>> text = 'a sample message with random words' >>> for word in words: ... text = text.replace(word, 'swords') ... >>> text 'a sample message with sswords swords' 4

Đầu ra: & nbsp;count=3.

Python3

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

>>> import re
>>> prohibitedWords = ['Some', 'Random', 'Words']
>>> big_regex = re.compile('|'.join(map(re.escape, prohibitedWords)))
>>> the_message = big_regex.sub("", 'this message contains Some really Random Words')
>>> the_message
'this message contains  really  '

big_regex = re.compile(r'\b%s\b' % r'\b|\b'.join(map(re.escape, words)))

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

big_regex = re.compile(r'\b%s\b' % r'\b|\b'.join(map(re.escape, words)))

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

grrks FOR grrks
geeks FOR geeks

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

big_regex = re.compile(r'\b%s\b' % r'\b|\b'.join(map(re.escape, words)))

>>> words = ['random', 'words']
>>> text = 'a sample message with random words'
>>> for word in words:
...     text = text.replace(word, 'swords')
... 
>>> text
'a sample message with sswords swords'

grrks FOR grrks
geeks FOR geeks

>>> big_regex = re.compile('|'.join(map(re.escape, words)))
>>> big_regex.sub("swords", 'a sample message with random words')
'a sample message with swords swords'

Output:    

gaaks for gaaks gaaks gaaks gaaks
geas for geas geas geeks geeks