题解 | #计算某字符出现次数#

import sys

def get_char_num(sentence, key_char):
    sentence = sentence.upper()
    key_char = key_char.upper()
    num = 0
    if key_char in sentence:
        for item in sentence:
            if item == key_char:
                num += 1
    return num

def get_char_num_2(sentence, key_char):
        sentence = sentence.upper()
        key_char = key_char.upper()
        return sentence.count(key_char)


if __name__ == "__main__":
   sentence = sys.stdin.readline().strip()
   key_char = sys.stdin.readline().strip()
   num = get_char_num_2(sentence, key_char) 
   print(num)