python - 搜索字符串以查找索引

Question

我想找到我的字符串中“a”项的所有索引，但它只打印第一个。这个程序有什么问题:

def str_lookup_reverse(s, c):
    for index in range(len(s)-1):
        if s[index] == c:
            print(index)

s = "parisa"
str_lookup_reverse(s, "a")

Answer 1

你试过这样吗:

for i, letter in enumerate(s):
    if letter == c:
        print(i)