start.py

## -*- coding: utf-8 -*-

#import sys, getopt

#def main(argv):
#   inputfile = ''
#   outputfile = ''
#   try:
#      opts, args = getopt.getopt(argv,"hi:o:",["ifile=","ofile="])
#   except getopt.GetoptError:
#      print ('test.py -i <inputfile> -o <outputfile>')
#      sys.exit(2)
#   for opt, arg in opts:
#      if opt == '-h':
#         print ('test.py -i <inputfile> -o <outputfile>')
#         sys.exit()
#      elif opt in ("-i", "--ifile"):
#         inputfile = arg
#      elif opt in ("-o", "--ofile"):
#         outputfile = arg
#   print ('输入的文件为：', inputfile)
#   print ('输出的文件为：', outputfile)

if __name__ == "__main__":
   a=0  
   class LossHistory:
        def __init__(self):    
           #super(FooChild,self).__init__()  #使用super函数  
            self.a=0   
        def pt(self):
            self.a+=1
            if self.a%4==0:
                print("ok")
   his=LossHistory();
   for i in range(20):
        his.pt()