How do you convert string to time in python?
Many timestamps have an implied timezone. To ensure that your code will work in every timezone, you should use UTC internally and attach a timezone each time a foreign object enters the system. Show
Python 3.2+:
This assumes you know the offset. If you don't, but you know e.g. the location, you can use the
As you can see,
Note that dates before the adoption of timezones will give you weird offsets. This is because the IANA has decided to use Local Mean Time:
The weird "7 hours and 34 minutes" are derived from the longitude of Chicago. I used this timestamp because it is right before standardized time was adopted in Chicago. Educative Answers Team Python provides the SyntaxThe syntax for the CodeThe code snippet below illustrates the usage of the
The
IntroductionOne of the many common problems that we face in software development is handling dates and times. After getting a date-time string from an API, for example, we need to convert it to a human-readable format. Again, if the same API is used in different timezones, the conversion will be different. A good date-time library should convert the time as per the timezone. This is just one of many nuances that need to be handled when dealing with dates and time. Thankfully, Python comes with the built-in module Converting Strings Using datetimeThe datetime module
consists of three different object types: For example, the following code will print the current date and time:
Running this code will print something similar to this:
When no custom formatting is given, the default string format is used, i.e. the format for "2018-06-29 08:15:27.243860" is in
ISO 8601 format (YYYY-MM-DDTHH:MM:SS.mmmmmm). If our input string to create a Let's take a look at the code below:
Running it will print the date, time, and date-time:
In this example, we are using a new method called In our example, You might be wondering what is the meaning of the format
All of these tokens, except the year, are expected to be zero-padded. So, if the format of a string is known, it can be easily parsed to a
From the following output you can see that the string was successfully parsed since it is being properly printed by the
Here are a few more examples of commonly used time formats and the tokens used for parsing:
You can parse a date-time string of any format using the table mentioned in the strptime documentation. Dealing with Timezones and datetimeHandling date-times becomes more complex while dealing with timezones. All above examples we have discussed are naive
This code will print:
The output of
Output:
Similarly, we can convert date-time strings to any other timezone. For example, we can convert the string "2018-06-29 17:08:00.586525+00:00" to "America/New_York" timezone, as shown below:
Output:
First, we have converted the string to a Converting TimezonesWe can convert timezone of a
First, we created one datetime object with the current time and set it as the "America/New_York" timezone. Then using the Check out our hands-on, practical guide to learning Git, with best-practices, industry-accepted standards, and included cheat sheet. Stop Googling Git commands and actually learn it!
As expected, the date-times are different since they're about 5 hours apart. Using Third Party LibrariesPython's
In some cases these third-party libraries also have better built-in support for manipulating and comparing date-times, and some even have timezones built-in, so you don't need to include an extra package. Let's take a look at few of these libraries in the following sections. dateutilThe dateutil module is an extension to the
This
Output:
You can see that almost any type of string can be parsed easily using the While this is convenient, recall from earlier that having to predict the format makes the code much slower, so if you're code requires high performance then this might not be the right approach for your application. MayaMaya also makes it very easy to parse a string and for changing timezones. Some simple examples are shown here:
Output:
For converting the time to a different timezone:
Output:
Now isn't that easy to use? Let's try out
Output:
As you can see, all of the date formats were successfully parsed. But did you notice the difference? If we are not providing the timezone info then it automatically converts it to UTC. So, it is important to note that we must provide ArrowArrow is another library for dealing with
datetime in Python. And like before with Let's try this with the same example string we have used for
Output:
And here is how you can use
Output:
As you can see the date-time string is converted to the "America/New_York" region. Now, let's again use the same set of strings we have used above:
This code will fail for the date-time strings that have been commented out, which is over half of our examples. The output for other strings will be:
In order to correctly parse the date-time strings that I have commented out, you'll need to pass the corresponding format tokens to give the library clues as to how to parse it. For example, "MMM" for months name, like "Jan, Feb, Mar" etc. You can check this guide for all available tokens. ConclusionIn this article we have shown different ways to parse a string to a The main problem with the default One more problem we face is dealing with timezones. The best way to handle them is always to store the time in your database as UTC format and then convert it to the user's local timezone when needed. These libraries are not only good for parsing strings, but they can be used for a lot of different types of date-time related operations. I'd encourage you to go through the documents to learn the functionalities in detail. How do you convert string to UTC time in Python?Python convert a string to datetime with timezone
In this example, I have imported a module called timezone. datetime. now(timezone('UTC')) is used to get the present time with timezone. The format is assigned as time = “%Y-%m-%d %H:%M:%S%Z%z”.
How do I convert a string to a date?Using strptime() , date and time in string format can be converted to datetime type. The first parameter is the string and the second is the date time format specifier. One advantage of converting to date format is one can select the month or date or time individually.
Is there a time datatype in Python?In Python, date and time are not a data type of their own, but a module named datetime can be imported to work with the date as well as time. Python Datetime module comes built into Python, so there is no need to install it externally. Python Datetime module supplies classes to work with date and time.
How do you change a date format from a string in Python?from datetime import datetime.. date_time_str = '18/09/19 01:55:19'. date_time_obj = datetime. strptime(date_time_str, '%d/%m/%y %H:%M:%S'). print ("The type of the date is now", type(date_time_obj)). |