autopep8.py 文件源码

def _get_indentword(source):
    """Return indentation type."""
    indent_word = '    '  # Default in case source has no indentation
    try:
        for t in generate_tokens(source):
            if t[0] == token.INDENT:
                indent_word = t[1]
                break
    except (SyntaxError, tokenize.TokenError):
        pass
    return indent_word