Python 我正在做一个项目，我正在创建一个名为geolocation_client.py的文件。我一直收到错误，pycharm一直告诉我安装隐藏

我正在做一个项目，我正在创建一个名为geolocation_client.py的文件。我不断收到错误，pycharm不断告诉我安装隐藏，但我无法。 下面是我收到的一个错误示例

   print("the stash is at ", stash.__str__())
NameError: name 'stash' is not defined

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您正在访问函数外部不存在的变量

尝试：

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（1） “main（）”中的“stash”只是一个局部变量（不存在于“main”之外）。您可以将其声明为“全局”。（2） 必须先调用“main”来定义“stash”，然后才能在函数外部使用它。好的，非常感谢您的帮助并解释我的程序没有正确编译的原因。谢谢您的帮助。我现在知道我的代码哪里出错了投票表决我的答案

from geolocation import GeoLocation

def main():
    stash = GeoLocation(34.988889, -106.614444)
    ABQstudio = GeoLocation(34.989978, -106.614357)
    FBIbuilding = GeoLocation(35.131281, -106.61263)

print("the stash is at ", stash.__str__())
print("ABQ stuido is at ", ABQstudio.__str__())
print("FBI building is at ", FBIbuilding.__str__())

print("distance in miles between:")
stash_studio = stash.distance_from(ABQstudio)
stash_fbi = stash.distance_from(FBIbuilding)

print(" stash/studio = ", stash_studio)
print(" stash/fbi = ", stash_fbi)

if __name__ == "__main__":
main()

from geolocation import GeoLocation

def main():
    stash = GeoLocation(34.988889, -106.614444)
    ABQstudio = GeoLocation(34.989978, -106.614357)
    FBIbuilding = GeoLocation(35.131281, -106.61263)

    print("the stash is at ", stash.__str__())
    print("ABQ stuido is at ", ABQstudio.__str__())
    print("FBI building is at ", FBIbuilding.__str__())

    print("distance in miles between:")
    stash_studio = stash.distance_from(ABQstudio)
    stash_fbi = stash.distance_from(FBIbuilding)

    print(" stash/studio = ", stash_studio)
    print(" stash/fbi = ", stash_fbi)

if __name__ == "__main__":
    main()