Writing Text Files

Writing a text file means opening a file in a mode that allows output and then writing strings to it.

The "w" means write mode.

Write mode replaces the file

If the file already exists, "w" starts a new file at that path:

The output is only second, because the second write opened the file in write mode again.

Append mode adds to the end

Use "a" when you want to append:

Append mode is useful for logs. For most learning scripts in this subject, write mode is clearer because each run creates a fresh result.

Write strings

file.write expects a string:

The str(count) conversion is explicit. It prevents a type error and makes it clear where numbers become report text.

Newlines are your responsibility

write does not add a newline automatically:

That produces:

line oneline two

Add \n when you want a line break.