Deserialize user defined function.

def func_load(code, defaults=None, closure=None, globs=None):
    '''Deserialize user defined function.'''
    if isinstance(code, (tuple, list)):  # unpack previous dump
        code, defaults, closure = code
    code = marshal.loads(code.encode('raw_unicode_escape'))
    if globs is None:
        globs = globals()
    return python_types.FunctionType(code, globs,
                                     name=code.co_name,
                                     argdefs=defaults,
                                     closure=closure)