計算字符串中的字符數（不區分大小寫）

Question

我一直在嘗試找到一種方法來使用 for 循環獲取字符串中特定字符的數量，但我無法使 function 不區分大小寫。

知道我能做什么嗎？

def main():
    N = input("Please enter the string to work on:")
    count = 0
    find=input("Please enter a letter that youy want to find in the string entered above:")

    for i in N:
        if i == find:
            count = count + 1

    print ("The character", find, "appeared " +   str( count), "times.")


main()

Answer 1

將調用input()的結果小寫以忽略大小寫：

N = input("Please enter the string to work on:")
N = N.lower()
find = input("Please enter a letter that youy want to find in the string entered above:")
find = find.lower()