HighFile-scopePython Plug & play

Add specific exception handling

Catch and handle only the exceptions you expect (e.g., KeyError, ValueError, TimeoutError); let unknown ones bubble.

Why this matters

Prevents masking real failures and supports targeted recovery.

Side-by-side examples engineers can pattern-match during review.

Avoid

try:
    return cache[data]
except Exception:
    return None

Prefer

try:
    return cache[data]
except KeyError:
    logger.info('miss', extra={'key': data})
    return None

Bad

except Exception: pass

Good

except (KeyError, ValueError) as e: ...

From the same buckets as this rule.

Critical
Avoid equality operators in loop termination conditions
Check if loops use equality operators (== or !=) in termination conditions. These can lead to infinite loops if the condition is never met exactly. Instead, use relational operators like < or > for safer loop termination.
error-handlingreadability-refactor
Critical
Avoid Returning Null in Non-Async Task Methods
Returning null from a Task or Task<T> method causes a NullReferenceException if awaited. Use Task.CompletedTask or Task.FromResult<T>(null) instead.
error-handlingreadability-refactor+1
Critical
Avoid Using Boolean Expressions in `except` Statements
Detect `except` clauses that use `or` or `and` to catch multiple exceptions. This does not work as intended. Recommend using a tuple of exceptions instead.
error-handlingstack-python