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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def convert_to_underscore(name):
 """ "someFunctionWhatever" -> "some_function_whatever" """

    s1 = _first_cap_re.sub(r'\1_\2', name)
    return _all_cap_re.sub(r'\1_\2', s1).lower()