create_function_dynamic.py

import types
def create_function(name, args):
    def y():
        pass
    y_code = types.CodeType(args, \
                y.func_code.co_nlocals, \
                y.func_code.co_stacksize, \
                y.func_code.co_flags, \
                y.func_code.co_code, \
                y.func_code.co_consts, \
                y.func_code.co_names, \
                y.func_code.co_varnames, \
                y.func_code.co_filename, \
                name, \
                y.func_code.co_firstlineno, \
                y.func_code.co_lnotab)
    return types.FunctionType(y_code, y.func_globals, name)
myfunc = create_function('myfunc', 3)
print repr(myfunc)
print myfunc.func_name
print myfunc.func_code.co_argcount
myfunc(1,2,3,4)