python实现从字符串中找出字符1的位置以及个数的方法
Jun 16, 2016 am 08:42 AM
python
number
Location
string
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本文实例主要实现给出任意字符串,获取字符串中某字符的位置以及出现的总次数。
实现该功能代码的时候可以使用函数enumerate来将字符串分离成位置和字符,然后进行比较即可。
具体实现代码如下:
#!/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)
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希望本文实例对大家Python程序设计中字符串操作的学习有所帮助。
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