def solution(myString, pat):
answer = 0
for i in range(len(myString)):
if myString[i:].startswith(pat):
answer += 1
return answer
방법 1.
def solution(myString, pat):
answer = 0
for i, x in enumerate(myString) :
if myString[i:].startswith(pat) :
answer += 1
return answer