def tabs_obsolete(physical_line):
    indent = indent_match(physical_line).group(1)
    if indent.count('\t'):
        return indent.index('\t'), "W191 indentation contains tabs"
For new projects, spaces-only are strongly recommended over tabs.  Most
dataset/ETHPy150Open sahana/eden/static/scripts/tools/pep8.py/tabs_obsolete