python实现从字符串中找出字符1的位置以及个数的方法

#!/bin/env python#-*- coding:utf-8 -*-#"""  用enumerate将string中的1都找出来,  用enumerate实现："""def get_1_pos(string):  onePos=[]  try:    onePos=list(((pos,int(val)) for pos,val in enumerate(string) if val == '1'))  except:    pass  return onePosdef get_1_num(string):  return len(list(get_1_pos(string)))def get_char_pos(string,char):  chPos=[]  try:    chPos=list(((pos,char) for pos,val in enumerate(string) if(val == char)))  except:    pass  return chPosdef get_char_num(string,char):  return len(list(get_char_pos(string,char)))if(__name__ == "__main__"):  str0="10101010101010101"  str1="123abc123abc123abc"  lt=get_1_pos(str0)  print(lt)  lt=get_1_pos(str1)  print(lt)  num=get_1_num(str0)  print(num)  lt=get_char_pos(str1,'1')  print(lt)  num=get_char_num(str1,'1')  print(num)