如何使这个字符计数器对案例不敏感？

Question

I wrote this little code to count occurrences of words in a text:

string=input("Paste text here: ")
word=input("Type word to count: ")
string.count(word)
x=string.count(word)
print (x)

The problem is that it is case sensitive. How can I make it be case insensitive?

Answer 1

Convert both the text and the word you're searching for to uppercase.

str.upper().count(word.upper())

Since strings are immutable, it won't permanently change the text or the word.

Answer 2

Use .lower() or .upper() to convert your inputs to all uppercase or lowercase

string=input("Paste text here: ").lower()
word=input("Type word to count: ").lower()
string.count(word)
x=string.count(word)
print (x)