Any text editor can be used to write the code. Follow this link to learn more about what a Python comment is. The example above illustrates how using a simple loop in Python can read the contents of a file. When it comes to reading files, Python takes care of the heaving lifting behind the scenes.
Data provided by the open method is usually stored in a new variable. Once the file is created, we can use a for loop to read every line in the file and print its contents to the command line. For some projects it will be the only thing needed to read and write files with Python. Before we can write to a file in Python, it must first be opened in a different file opening mode. We can do this by supplying the open method with a special argument.
In Python, write to file using the open method. Add the following code to write. In this mode, any data already in the file is lost when the new data is written. Python can also write multiple lines to a file. The easiest way to do this is with the writelines method. Using string concatenation makes it possible for Python to save text data in a variety of ways. By default, Python will open the file in read-only mode.
Note: These examples assume the user is working with text file types. Closing a file ensures that the program can no longer access its contents. The open method can read and write many different file types. Python can also open images, allowing you to view and edit their pixel data. The Pillow library includes powerful tools for editing images. This has made it one of the most popular Python libraries.
You can also work with file objects using the with statement. Just access like you would for any-other module, typing print data. To test this just put a print function in your y file and when your import was successful then in x file it should print it. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to import other Python files? Ask Question. Asked 11 years, 10 months ago.
Active 1 month ago. Viewed 2. How do I import other files in Python? How exactly can I import a specific python file like import file. How can I import a folder instead of a specific file? I want to load a Python file dynamically at runtime, based on user input. I want to know how to load just one specific part from the file.
For example, in main. Improve this question. Tamer Tamer See Also: stackoverflow. If A and B are two files within the same directory, in python 3. Play around a little bit for importing from different directory — Shivam Jha. Add a comment. Active Oldest Votes. There are many ways to import a python file, all with their pros and cons. Example 5, use os. Improve this answer. Eric Leschinski Eric Leschinski k 87 87 gold badges silver badges bronze badges.
Amazing guide anyway — oriadam. Every time I have an import issue I end up at this question and am always able to solve my problem. If I could upvote this for each time you've helped me, I would. What's the big difference between all of these, and why is one better than any other? For example 5, you write "Import files in python with the bare import command," but you also use the bare? Good answer but the fact that you use a different import file as example all the times makes it cumbersome to read.
I would like to emphasize that even if you work on Windows, the import is case sensitive. So you cannot have Module. Show 9 more comments. In python 2. If you add an import filename to the init. What if it's not a package but just a script file? Is it still accurate in ?
Is it python3 or 2? Importing in Python is a bizarre mess. It should be possible to import any function from any file, with a simple line of code providing the path absolute or relative, hard-coded or stored in a variable to the file. Python, just do it!
Show 3 more comments. To import a specific Python file at 'runtime' with a known name: import os import sys James James My friend checked this today with no luck - looks like filename should not be there. He used local file in parent directory and ". Fixing problem in post was rejected - probably misunderstanding?
Print sys. Otherwise, including running with -m option, the current directory as in pwd is added to module search path. We can check it by printing sys.
As you can see in the first case we have the pizzashop dir in our path and so we cannot find sibling pizzapy package, while in the second case the current dir denoted as '' is in sys. This problem of importing the sibling package often arise when people put a bunch of test or example scripts in a directory or package next to the main package.
Here is a couple of StackOverflow questions:. The good solution is to avoid the problem — put tests or examples in the package itself and use relative import. The dirty solution is to modify sys. In the end, everything in Python is really simple and even when it is not sufficient to your case, you can always monkey patch anything at runtime.
Alex Dzyoba. Home Blog KB Feed. Hitchhiker's guide to the Python imports January 13, Disclaimer : If you write Python on a daily basis you will find nothing new in this post.
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