Python requests - Exception Type: ConnectionError - try: except does not work

Question

I am using a webservice to retrieve some data but sometimes the url is not working and my site is not loading. Do you know how I can handle the following exception so there is no problem with the site in case the webservice is not working?

Django Version: 1.3.1 
Exception Type: ConnectionError
Exception Value: 
HTTPConnectionPool(host='test.com', port=8580): Max retries exceeded with url:

I used

try:
   r = requests.get("http://test.com", timeout=0.001)
except requests.exceptions.RequestException as e:    # This is the correct syntax
   print e
   sys.exit(1)

but nothing happens

I'm not sure but shouldn't it be except requests.exceptions.RequestException, e:? also you are saying you have ConnectionError as an exception but i don't see that you catch this specific exception... — Kobi K
– Kobi K, Commented Jan 28, 2014 at 13:51
well because I am new to python I found the answer from here : stackoverflow.com/questions/16511337/… — user1431148
– user1431148, Commented Jan 28, 2014 at 13:56

Eric Zhang · Accepted Answer · 2014-06-06 17:15:57Z

87

You should not exit your worker instance sys.exit(1) Furthermore you 're catching the wrong Error.

What you could do for for example is:

from requests.exceptions import ConnectionError
try:
   r = requests.get("http://example.com", timeout=0.001)
except ConnectionError as e:    # This is the correct syntax
   print e
   r = "No response"

In this case your program will continue, setting the value of r which usually saves the response to any default value

edited Jun 6, 2014 at 17:15

Eric Zhang

6921 gold badge4 silver badges13 bronze badges

answered Jan 28, 2014 at 13:58

ProfHase85

12.4k7 gold badges56 silver badges71 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

ProfHase85 Over a year ago

Sorry did not see that you are catching the wrong error: You re getting a ConnectionError, so you need to catch this one (see edited answer)

user1431148 Over a year ago

It works! thank you very much! But I used except requests.exceptions.ConnectionError as e:

ArtOfWarfare Over a year ago

ConnectionError is also the name of a built-in error type - how can this be a widely used package when they have such horrible naming practices? Neither str nor repr gives any indication that the class isn't the built-in one. It doesn't even inherit from the built-in ConnectionError, it inherits from OSError instead (which the real built-in one also does).

Collectives™ on Stack Overflow

Python requests - Exception Type: ConnectionError - try: except does not work

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related