misplaced-bare-raise.md

Pattern: Misplaced bare raise

Issue: -

Description

Used when a bare raise is not inside an except clause. This generates an error, since there are no active exceptions to be re-raised.

An exception to this rule is represented by a bare raise inside a finally clause, which might work, as long as an exception is raised inside the try block, but it is nevertheless a code smell that must not be relied upon.

Example of incorrect code:

try:
    raise # outside of except clause
except Exception:
    print("error details")

Example of correct code:

try:
    pass
except Exception:
    print("error details")
    raise

Further Reading

• The Python Tutorial - Errors and Exceptions