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 onePos

def 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 chPos
def 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)