human
Complete the below
def _lazy_re_compile(regex, flags=0):

    ''''Lazily compile a regex with flags.'
    '''

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What is a the Python code you requested?
assistant
#Here is the Python code you requested.
    def _compile():
        if isinstance(regex, str):
            return re.compile(regex, flags)
        else:
            assert (not flags), 'flags    must    be    empty    if    regex    is    passed    pre-compiled'
            return regex
    return SimpleLazyObject(_compile)