Python: Open And Write To A .txt File

I'm new to python and so I'm trying to make an ATM (simulator I guess). One of the functions is to register, and so I'm trying to save the usernames in a .txt file for reference (p

Solution 1:

I think it should be:

open("users.txt","w")

Solution 2:

You should use

withopen("users.txt","a") as f:
      f.write(username)

instead of

withopen("users.txt") as f:
     f.write(username, "a")

hope this helps!

Solution 3:

Given that you're calling f.write(username, "a") and file write() only takes one parameter - the text to write - I guess you intend the "a" to append to the file?

That goes in the open() call; other answers telling you to use open(name, "w") are bad advice, as they will overwrite the existing file. And you might want to write a newline after the username, too, to keep the file tidy. e.g.

withopen("users.txt", "a") as f:
    f.write(username + "\n")

Solution 4:

You must open the file in write mode. See the documentation for open

open('users.txt', 'w') should work.