Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Practice Creating and Using Functions in Python Practice Functions Use an External Function

Eric Morales
Eric Morales
844 Points
Posted by Eric Morales
Eric Morales
844 Points

Hello Community, How to raise a CommunicationError?

using_a_function.py 
"""
This is importing a function named `tweet` from a file
    that we unfortunately don't have access to change.

You use it like so:
>>> tweet("Hello this is my tweet")

If the function cannot connect to Twitter,
    the function will raise a `CommunicationError`
If the message is too long,
    the function will raise a `MessageTooLongError`
"""
from twitter import (
    tweet,
    MessageTooLongError,
    CommunicationError,
)
try:
    raise Communicationerror:
        print("An error occurred attempting to connect to Twitter. Please try again!")



message = input("What would you like to tweet?  ")
# Your code here

tweet(message)

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

Some hints:

  • You don't need to raise the communication error. tweet(message) will raise the error if there is one
  • Therefore tweet(message) should be in the try
  • For task 2 you do need to handle the error. This is done with except (or in this case except CommunicationError: )