help mising 1 required posisitional rgument

[kobencry]

python3.7.0 modul documentation
arbitrary argument list

[buran]

I would suggest that you go over that material again.
In your code you have a positional argument file. Then in the function body you "expect" it to have write method in order your code to work. However you pass as first argument "Hello" which is str and does not have write method.