Do not use a raise statement without a specific exception

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Metadata

ID: python-best-practices/no-bare-raise

Language: Python

Severity: Warning

Category: Best Practices

Description

Never use a bare raise and always use a specific exception. Using a specific exception helps you distinguish errors in your program and have appropriate error handling code.

Non-Compliant Code Examples

def myfunc():
  raise  # should use specific exception

if foo:
  raise
else:
  func1()
  raise

for v in list:
  do_something()
  raise

Compliant Code Examples

def myfunc():
  raise MyException

try:
  foo()
except MyException:
  raise  # re-raise exception