Python try / except / else loop does both the try and else actions-CodePudding

I'm running a Python script to post a Tweet if the length is short enough with an exception for errors and an else statement for messages that are too long.

When I run this, it posts the Tweet and still gives the Tweet too long message. Any idea why that is happening and how to make it work as intended?

if len(tweet_text) <= (280-6):
    try:    
        twitter = Twython(CONSUMER_KEY,CONSUMER_SECRET,ACCESS_KEY,ACCESS_SECRET)
        twitter.update_status(status=tweet_text)
    except TwythonError as error:
            print(error)
    else:
        print("Tweet too Long. Please try again.")

CodePudding user response：

The first string is checking the length of the tweet. Move the else four spaces back. Because try/except construction can be try/except/else construction

CodePudding user response：

From the docs:

The try … except statement has an optional else clause, which, when present, must follow all except clauses. It is useful for code that must be executed if the try clause does not raise an exception. (emphasis added)

Spaces/Tabs matter in Python.

What your snippet says in common English is "Try to post the tweet, unless there's an error, then print the error. If there's not an error, print 'Tweet too long. Please try again.'"

What you want is:

if len(tweet_text) <= (280-6):
    try:    
        twitter = Twython(CONSUMER_KEY,CONSUMER_SECRET,ACCESS_KEY,ACCESS_SECRET)
        twitter.update_status(status=tweet_text)
    except TwythonError as error:
        print(error)
else:
    print("Tweet too Long. Please try again.")