如下所示:
str_1='wo shi yi zhi da da niu ' char_1='i' nPos=str_1.index(char_1) print(nPos)
运行结果:7
========是使用find==========
str_1='wo shi yi zhi da da niu ' char_1='i' nPos=str_1.find(char_1) print(nPos)
结果:5
========如何查找所有‘i'在字符串中位置呢?===========
#开挂模式 str_1='wo shi yi zhi da da niu ' char_1=str(input('Please input the Char you want:')) count=0 str_list=list(str_1) for each_char in str_list: count+=1 if each_char==char_1: print(each_char,count-1)
运行结果:
Please input the Char you want:i i 0 i 1 i 2 i 3