Learning how to create files in Python will open up a lot of coding possibilities. This is useful if you want to save user data to provide consistency between uses. However, it’s also very useful for manipulating data, to scrape content, and more.
The good news is, as always, Python makes this process very simple.
How to create files in Python in three lines of code
Use the following code to create a file called “BabyFile.txt” and to write “Hello der!” into it:
myFile = open("BabyFile.txt", "w+") myFile.write("Hello der!") myFile.close()
As you can see, we declare our new myFile variable and then use the default open and write commands to open and write to the file. “W +” tells Python that we will write a new file. If the file already exists, then this will write to the file. If you replace this with “w” then the file will be created only if it doesn’t already exist.
myFile.write can be used the same as we would use print.
Note that we always have to close the file at the end for the changes to continue.
How to write to be added and more
Now that you know how to create files in Python, you might be wondering how to do other things like edit those files, delete them, or even copy and paste them!
If you want to add data to your file (add more information), then you use the exact same method but use “a +” instead of “w +”
myFile = open("BabyFile.txt", "w+") myFile.write(“And goodbye!”) myFile.close()
This won’t add a new line, so make sure to include the “\ n” symbol if you want to do it.
If we want to read a file, we do it like this:
myFile = open("BabyFile.txt", "r") fileContents == myFile.read()
Delete and move files
One thing you need to do if you want to know how to create files in Python, is to check if they already exist. This is important because you can try to overwrite / edit / delete files that don’t exist!
To do this, you must use the os module which fortunately comes as default in Python. Just import, then you can use: path with isfile (), isdir (), or exist () to get the information you need!
os.path.isfile(“your file here”)
You can rename the file using the os module too. This is very easy:
os.rename(“old file path and name”, “new file path and name”)
The cool thing is if you change the pathname, this will actually move the file to that directory! Or, you can do this with the shutil module:
Shutil.move(“old file path and name”, “new file path and name”)
Finally, you can simply delete the file using os.remove ().
So there you have it! That’s how to create a file in Python, update it, rename it, and destroy it. Circle of life!
Of course, this only really scratches the surface of what you can achieve in Python. Python is a very powerful and flexible programming language.
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