import profile 
 
A = 5 
 
def param_test(): 
  B = 5 
  res = 0 
  for i in range(100000000): 
    res = B + i 
  return res 
     
if __name__=='__main__': 
  profile.run('param_test()') 
>>> ===================================== RESTART ===================================== 
>>>  
     5 function calls in 37.012 seconds #全局变量测试结果:37 秒 
 
 
  Ordered by: standard name 
 
 
  ncalls tottime percall cumtime percall filename:lineno(function) 
    1  19.586  19.586  19.586  19.586 :0(range) 
    1  1.358  1.358  1.358  1.358 :0(setprofile) 
    1  0.004  0.004  35.448  35.448 <string>:1(<module>) 
    1  15.857  15.857  35.443  35.443 Learn.py:5(param_test) 
    1  0.206  0.206  37.012  37.012 profile:0(param_test()) 
    0  0.000       0.000     profile:0(profiler) 
 
 
 
 
>>> ===================================== RESTART ===================================== 
>>>  
     5 function calls in 11.504 seconds  #局部变量测试结果: 11 秒 
 
 
  Ordered by: standard name 
 
 
  ncalls tottime percall cumtime percall filename:lineno(function) 
    1  3.135  3.135  3.135  3.135 :0(range) 
    1  0.006  0.006  0.006  0.006 :0(setprofile) 
    1  0.000  0.000  11.497  11.497 <string>:1(<module>) 
    1  8.362  8.362  11.497  11.497 Learn.py:5(param_test) 
    1  0.000  0.000  11.504  11.504 profile:0(param_test()) 
    0  0.000       0.000     profile:0(profiler) 

#模块a.py 
PI = 3.14 
 
def setPi(new): 
  PI = new 
  return PI 

import a 
 
PI = a.setPi(3.14159) 
print PI;a.PI