Python本地与全局命名空间用法实例

x = 1
def fun(a):
  b=3
  x=4
  def sub(c):
    d=b
    global x
    x = 7
    print ("Nested Functionn=================")
    print locals()
  sub(5)
  print ("nFunctionn=================")
  print locals()
  print locals()["x"]
  print globals()["x"]
print ("nGlobalsn=================")
print globals()
fun(2)
 
///scope.py
Globals
=================
{'x': 1,'__file__':
'C:bookspythonCH1codescope.py','fun': <function fun at 0x008D7570>,'t': <class '__main__.t'>,'time': <module 'time' (built-in)>,. . .}
Nested Function
=================
{'c': 5,'b': 3,'d': 3}
Function
=================
{'a': 2,'x': 4,'sub':
  <function sub at 0x008D75F0>}
4
7