题解 | 字母统计
字母统计
https://www.nowcoder.com/practice/de7bf0945c1c4bd1aa9d49573b831f3c
def tongji(s):
res = {}
for i in range(26):
w = ord('A') + i
w = chr(w)
res[w] = 0
for j in s:
for i in range(26):
if ord(j) == ord('A') + i:
res[j] += 1
return res
s = input()
res = tongji(s)
for i, j in res.items():
print('{}:{}'.format(i,j))
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