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 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。