Safe File Operations with `with open()`
with open("server_logs.txt", "a", encoding="utf-8") as f:
f.write("[2026-08-21] User 101 logged in successfully\n")
The with block guarantees that the OS file handle is automatically flushed and closed, preventing file lock leaks and corruption even if an unexpected exception occurs.
Quick Summary
- Always use
with open()context managers to ensure safe file handle closure. - Next, we explore Error Handling & Exceptions to make programs resilient against crashes.