saving file with format-CodePudding

Hi guys I am trying to save my file in python... I dont know how to do it.. It came out the save file to be like this : 506882122734561843241851186242872

What I am trying to do is ["50688", "212273", "4561843", "241851", "18624", "2872"]

with open("output_data.txt", "w") as out_file:
    for user in users:
        out_string = ""
        out_string  = str(user)
        out_file.write(out_string)

CodePudding user response：

The loop you're using is stitching together each of the elements in your users list so you end up with one long string in out_string. You probably introduced this loop after you got an error message when trying to save the list straight to a file.

Instead, and as suggested in the comments, you could save the data as JSON:

import json

users = ["50688", "212273", "4561843", "241851", "18624", "2872"]

with open("output_data.txt", "w") as out_file:
    out_file.write(json.dumps(users))

output_data.txt will then contain:

["50688", "212273", "4561843", "241851", "18624", "2872"]

Note: this assumes that your original list is a list of strings, not integers (it wasn't clear from your question).

CodePudding user response：

You are saving user variables without any delimiters.

You can try to use str.join to add commas like

users = ["0", "1", "2"]
users = ",".join(users)
print(users)  # should print '0,1,2'

You can also use repr to print string with quotes.

user = "3"
print(repr(user))  # should print '"3"'

Now you can combine both methods

with open("output_data.txt", "w") as file:
    users = map(repr, users)
    users = ", ".join(users)
    file.write(users)