os.path.join (folder, filename) ensures the path is correct for the system. On Windows, it uses backslashes (reports\summary.txt); on Linux and macOS it uses forward slashes (reports/summary.txt).

Natalie Campisi is a senior journalist who covers personal finance, balancing timely news with in-depth enterprise reporting. Her mission is to make complex financial issues clear and accessible for ...

ACSL美国计算机科学思维挑战活动 ，原名美国计算机科学联赛，最初成立于1978年，起源于美国硅谷，最初名为the Rhode Island Computer Science League，后为the New England Computer ...