Python习题集（十七）

写一个函数alphabet_index，该函数参数是1个字符串，
要求该函数返回一个新字符串，里面是 参数字符串中每个字母依次对应的 数字。如果是非字母，则忽略它
字母"a" 和"A" 都对应 1, "b"和"B"都对应2, "c"和"C"对应3， 依次类推
比如
alphabet_index("Wow, does that work?")
➞ "23 15 23 4 15 5 19 20 8 1 20 23 15 18 11"
alphabet_index("The river stole the gods.")
➞ "20 8 5 18 9 22 5 18 19 20 15 12 5 20 8 5 7 15 4 19"
alphabet_index("We have a lot of rain in June.")
➞ "23 5 8 1 22 5 1 12 15 20 15 6 18 1 9 14 9 14 10 21 14 5"

def alphabet_index(strs):
    strs = strs.upper()
    temp = 64
    res = ""
    for i in strs:
        if i.isalpha():
            res += str(ord(i) - temp) + " "
    print(res)
alphabet_index("Wow, does that work?")
alphabet_index("The river stole the gods.")
alphabet_index("We have a lot of rain in June.")