问题描述
我的应用程序有一个使用 execfile 动态执行 python 脚本的按钮.如果我在脚本中定义一个函数(例如.spam())并尝试在另一个函数中使用该函数(例如.eggs()),我会收到此错误:
My application has a button to execute a python script dynamically using execfile. If I define a function inside the script (eg. spam()) and try to use that function inside another function (eg. eggs()), I get this error:
NameError: global name 'spam' is not defined
从 eggs() 中调用 spam() 函数的正确方法是什么?
What is the correct way to call the spam() function from within eggs()?
#mainprogram.py class mainprogram(): def runme(self): execfile("myscript.py") >>> this = mainprogram() >>> this.runme() # myscript.py def spam(): print "spam" def eggs(): spam() eggs()
另外,我似乎无法从脚本中的主应用程序执行方法.即
Also, I can't seem to be able to execute a method from my main application in the script. i.e.
#mainprogram.py class mainprogram(): def on_cmdRunScript_mouseClick( self, event ): execfile("my2ndscript.py") def bleh(): print "bleh" #my2ndscript.py bleh()
错误是:
NameError: name 'bleh' is not defined
从 my2ndscript.py 调用 bleh() 的正确方法是什么?
What is the correct way to call bleh() from my2ndscript.py?
编辑:更新第一期
推荐答案
第二种情况你需要import(不确定是否mainprogram.py"在你的 $PYTHONPATH)
In the second case you will need import (not sure whether "mainprogram.py" is on your $PYTHONPATH)
#mainprogram.py class mainprogram: def runme(self): execfile("my2ndscript.py") def bleh(self): print "bleh" if __name__ == '__main__': mainprogram().runme() #my2ndscript.py import mainprogram x = mainprogram.mainprogram() x.bleh()
但这将创建 mainprogram 的第二个实例.或者,更好的是:
but this will create a second instance of mainprogram. Or, better yet:
#mainprogram.py class mainprogram: def runme(self): execfile("my2ndscript.py", globals={'this': self}) def bleh(self): print "bleh" if __name__ == '__main__': mainprogram().runme() #my2ndscript.py this.bleh()
我想 execfile 无论如何都不是解决您问题的正确方法.为什么不使用 import 或 __import__ (以及 reload() 以防脚本在这些点击之间发生变化)?
I guess that execfile is not the right solution for your problem anyway. Why don't you use import or __import__ (and reload() in case the script changes between those clicks)?
#mainprogram.py import my2ndscript class mainprogram: def runme(self): reload(my2ndscript) my2ndscript.main(self) def bleh(self): print "bleh" if __name__ == '__main__': mainprogram().runme() #my2ndscript.py def main(program): program.bleh()