How to replace custom tabs with spaces in a string, depend on the size of the tab?

Question

I\'m trying to write a python function not using any modules that will take a string that has tabs and replace the tabs with spaces appropriate for an inputted tabstop size.

Answer 1

Use the re.sub is enough.

def untabify(s, tabstop = 4):
    return re.sub(re.compile(r'\t'), ' '*tabstop, s)