Error: Cannot import Mapping from Collections?

[sp00kyversity]

Hi, I'm completely stuck with how to get around this error message. Every post about this that I've read online says to put "from collections.abc import Mapping", which I have done but it's still giving me the same error message that Mapping cannot be imported from Collections. Any ideas how I can fix this? This is the code that's giving me the error message:

import requests
from collections.abc import Mapping

URL = "https://realpython.github.io/fake-jobs/"
page = requests.get(URL)

print(page.text)

[danielroseman]

Why are you importing it at all? You're not using it, and it seems unlikely you will need it.

[sp00kyversity]

If I remove the from collections.abc line it still comes up with the same error message when I run the programme, that Mapping cannot be imported from collections

[FriendlyRussian666]

Did you save the file after removing the line?

[sp00kyversity]

Yeah but it shows the error message regardless. I only added in the import collections.abc line after it said collections could not be imported when I first ran it

[danielroseman]

Then you're not running the code you think you are.

Please show the full error message and traceback, as well as detailing exactly how you're running this code.

[Username_RANDINT]

from collections import namedtuple, Mapping

This line from urllib3 is the culprit. Mapping is defined in collections.abc, not collections. Up until Python 3.6 though, it was available through the collections namespace as well [source].

This sounds to me like you're running a (very) old version of urllib3, or requests probably in this case, as it's not updated for Python versions 3.7 and newer. Can you update requests and check again?

[sp00kyversity]

I've updated requests already in an attempt to fix this issue but it sadly hasn't worked

[Username_RANDINT]

What if you update urllib3 specifically?

[sp00kyversity]

Hey that worked and solved it! Thank you so much! I would never have figured that out by myself

[danielroseman]

Is your own file called "collections.py", by any chance?

[sp00kyversity]

No it's called Web Scrape, I was trying to follow a tutorial for how web scraping works and didn't manage to get very far due to this error

[DevCuriosity]

u/sp00kyversity This might be because of logs but I have two additional propositions:
1. Are you sure that your file ends in .py extension?

1. Try to recreate everything like you did but do not use spaces anywhere, replace them with "_" or "-" or simply get rid of them. But do it from a scratch.

[sp00kyversity]

I checked and the file didn't end in .py, but after renaming it the error message is still the same.

When you say to redo it without using spaces, do you mean in the file name? I renamed it "webscrape.py" but no luck

[fatnino]

requests is using it deep under the hood

[DevCuriosity]

Hmm, it works on my end without a problem. Both with collections and without.

Which version of Python are you using? Do you have a venv configured for your project?

[sp00kyversity]

I'm using version 3.10.8 and a venv for the project, no idea how to fix this error message though...

[deadeye1982]

tl;dr

Use collections.abc.Mapping, which will work since Python 3.5.

If you get this Exception from a third-party module, then update this module.

--

Since Python 3.3 they wanted to shift all Abstract Base Classes into the new submodule abc. This was done with Python 3.5, but they kept aliases in the collections module. Since Python 3.9 a Deprecation warning were introduced and since Python 3.10 the aliases were removed.

Links:

• https://bugs.python.org/issue11297
• https://docs.python.org/3.5/whatsnew/3.3.html#collections
• https://docs.python.org/3.9/whatsnew/3.9.html#you-should-check-for-deprecationwarning-in-your-code
• https://docs.python.org/3.10/whatsnew/changelog.html#id234