How can I quickly disable a try statement in python for testing?

Question

Say I have the following code:

try:
    print 'foo'
    # A lot more code...
    print 'bar'
except:
    pass

How would I for testing purposes disable the try-statement temporary?

You can’t just comment the try and except lines out as the indention will still be off.

Isn’t there any easier way than this?

#try:
print 'foo'
# A lot more code...
print 'bar'
#except:
#    pass

Asked By: Tyilo

||

Source

Answer 1

Turn it into an if True statement, with the except clause ‘commented out’ by the else branch (which will never be executed):

if True: # try:
    # try suite statements
else: # except:
    # except suite statements

The else: is optional, you could also just comment out the whole except: suite, but by using else: you can leave the whole except: suite indented and uncommented.

So:

try:
    print 'foo'
    # A lot more code...
    print 'bar'
except SomeException as se:
    print 'Uhoh, got SomeException:', se.args[0]

becomes:

if True: # try:
    print 'foo'
    # A lot more code...
    print 'bar'
else: # except SomeException as se:
    print 'Uhoh, got SomeException:', se.args[0]

Answered By: Martijn Pieters

Answer 2

Make your except only catch something that the try block won’t throw:

class FakeError:
    pass

try:
    # code
except FakeError: # OldError:
    # catch

Not actually sure if this is a good idea, but it does work!

Answered By: Xymostech

Answer 3

You could reraise the exception as the first line of your except block, which would behave just as it would without the try/except.

try:
    print 'foo'
    # A lot more code...
    print 'bar'
except:
    raise # was: pass

Answered By: Joseph Sheedy

Answer 4

Piggy-backing off of velotron’s answer, I like the idea of doing something like this:

try:
    print 'foo'
    # A lot more code...
    print 'bar'
except:
    if settings.DEBUG:  # Use some boolean to represent dev state, such as DEBUG in Django
        raise           # Raise the error
    # Otherwise, handle and move on. 
    # Typically I want to log it rather than just pass.
    logger.exception("Something went wrong")

Answered By: alukach

How can I quickly disable a try statement in python for testing?

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