例子：
# file one.pydef func():
print("func() in one.py")
print("top-level in one.py")if __name__ == "__main__":
print("one.py is being run directly")else:
print("one.py is being imported into another module")# file two.pyimport one # start executing one.pyprint("top-level in two.py")
one.func()if __name__ == "__main__":
print("two.py is being run directly")else:
print("two.py is being imported into another module")当运行python one.py，输出:
top-level in one.py one.py is being run directly
当运行python two.py,输出:
top-level in one.py one.py is being imported into another module top-level in one.pyfunc() in one.py two.py is being run directly下载本文