python 循环while和for in简单实例

#!/uer/bin/env python# _*_ coding: utf-8 _*_lucknumber = 5b = 0while b <3:  print('guss count:',b)  a = int(input('you guse number'))  if a > lucknumber:    print ('youaerbiger')  elif a == lucknumber:    print ('youare righet')    break                 #跳出这个层级的循环  else :    print ('you aer smaller')  b +=1                  #在while循环中，+=1 是必须循环体else:  print ("Too many retrys!")#________________________________________________for i in range(3):  a = int(input('you guse number'))   #注意用int（）表示输出的是 数字类型  if a > lucknumber:    print ('youaerbiger')  elif a == lucknumber:    print ('youare righet')    break  else :    print ('you aer smaller')else:  print ("Too many retrys!")