Python 查找字符在字符串中的位置实例

str_1='wo shi yi zhi da da niu 'char_1='i'nPos=str_1.index(char_1)print(nPos)

str_1='wo shi yi zhi da da niu 'char_1='i'nPos=str_1.find(char_1)print(nPos)

#开挂模式str_1='wo shi yi zhi da da niu 'char_1=str(input('Please input the Char you want:'))count=0str_list=list(str_1)for each_char in str_list: count+=1 if each_char==char_1:  print(each_char,count-1)

Please input the Char you want:ii 0i 1i 2i 3