题解 | #计算某字母出现次数#
计算某字母出现次数
http://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
Remember to convert to equivalent cases for all.
This time: .lower()
chars = input().lower()
key = input().lower()
count = 0
for char in chars:
if key == char:
count += 1
print(count) 
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