python本地与全局命名空间用法实例

本文实例讲述了python本地与全局命名空间用法。分享给大家供大家参考。具体如下:

x = 1
def fun(a):
b=3
x=4
def sub(c):
d=b
global x
x = 7
print (“nested function\n=================”)
print locals()
sub(5)
print (“\nfunction\n=================”)
print locals()
print locals()[“x”]
print globals()[“x”]
print (“\nglobals\n=================”)
print globals()
fun(2)
///scope.py
globals
=================
{‘x’: 1,
‘__file__’:
‘c:\\books\\python\\ch1\\code\\scope.py’,
‘fun’: ,
‘t’: ,
‘time’: ,. . .}
nested function
=================
{‘c’: 5, ‘b’: 3, ‘d’: 3}
function
=================
{‘a’: 2, ‘x’: 4, ‘b’: 3, ‘sub’:
}
4
7

希望本文所述对大家的python程序设计有所帮助。

Posted in 未分类