摘要： （b）代码如下，另外一种做法，逆序查找：def rfindchr(string, char): a = string index = -1 k = len(a) for i in a[::-1]: k = k - 1 if i == char: index = k print index break if index == -1: print 'index = ', index a = raw_input('Please input a string ... ')b = raw_input('Please input a character to be 阅读全文