Bad code:

# case 1
try:
    do_thing()
except Exception:
    raise

# case 2
try:
    do_thing()
except:
    raise

# case 3
try:
    do_thing()
except SomeKindOfException:
    raise

Fix:
remove the try/except, as it has no effect.

do_thing()

In cases 1&2, all exceptions are raised immediately, and in case 3 only a subset of exceptions is caught, then reraised immediately.

Notes:

• This shouldn't run if there's any other code in the except block.
• If there are multiple excpt cases, empty ones (with only raise) should be removed, and others should remain.