python 中locals() 和 globals()

 1 def test(arg):
 2     a=1
 3     b=2
 4     data_dict = {}
 5     print locals()
 6     print globals()
 7 
 8 
 9 if __name__ == ‘__main__‘:
10     test(3)

1 {‘a‘: 1, ‘data_dict‘: {}, ‘b‘: 2, ‘arg‘: 3}
2 {‘__builtins__‘: <module ‘__builtin__‘ (built-in)>, ‘__file__‘: ‘F:/work/workspace/pythonWorkspace/learn/locals_globals.py‘, ‘__package__‘: None, ‘test‘: <function test at 0x0239F830>, ‘__name__‘: ‘__main__‘, ‘__doc__‘: None}

 1 b = 5 # 定义一个全局变量
 2 def test2():
 3     a=1
 4     locals()["a"] = 2  # 修改局部变量
 5     print "a=", a
 6     globals()["b"] = 6 # 修改全局变量
 7     print "b=", b
 8 
 9 if __name__ == ‘__main__‘:
10     test2()

a= 1
b= 6