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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 GetModuleBaseNameFromWSDL(wsdl):
 """By default try to construct a reasonable base name for all generated modules. Otherwise return None. """

    base_name = wsdl.name or wsdl.services[0].name
    base_name = SplitQName(base_name)[1]
    if base_name is None: 
        return None
    return NCName_to_ModuleName(base_name)