def compile_pattern()

in readability/readability.py [0:0]

• 13 lines of code
• 7 McCabe index (conditional complexity)

def compile_pattern(elements):
    if not elements:
        return None
    elif isinstance(elements, pattern_type):
        return elements
    elif isinstance(elements, (str_, bytes_)):
        if isinstance(elements, bytes_):
            elements = str_(elements, "utf-8")
        elements = elements.split(u",")
    if isinstance(elements, (list, tuple)):
        return re.compile(u"|".join([re.escape(x.strip()) for x in elements]), re.U)
    else:
        raise Exception("Unknown type for the pattern: {}".format(type(elements)))