[LeetCode] 2011. Final Value of Variable After Performing Operations

Python

class Solution:
    def finalValueAfterOperations(self, operations: List[str]) -> int:
        answer = 0
        for operation in operations:
            if operation == '++X' or operation == 'X++':
                answer += 1
            elif operation == '--X' or operation == 'X--':
                answer -= 1
                
        return answer