`pytest` seems to have the package `attrs` as a dependency. `attrs==19.2.0` was released around `2019-10-01 17:00 UTC`. This seems to cause the problem above.

Switching back to `attrs==19.1.0` fixes the problem. Just do the following:
```
pip install attrs==19.1.0
```

**NOTE**: I expect that the issue will be resolved either by `attrs` or `pytest` soon by releasing a new version. So this fix should only be temporary.

**UPDATE**: Moving the comment into the answer. This error does not occur on the newer versions of pytest i.e. `pytest==5.2.0`

pytest fixed using deprecated keyword `convert` at 3.6.3 (https://docs.pytest.org/en/latest/changelog.html#pytest-3-6-3-2018-07-04).
At 4.0.1, pytest merged code using `convert` (https://github.com/pytest-dev/pytest/pull/4427).
This code was fixed on 5.2.0 (https://github.com/pytest-dev/pytest/pull/4795).

pytest version 5.3.1 with attrs Version 19.3.0 works fine for me.
[To check the pytest Version and attrs Version issue the following command:]

    pip show pytest attrs

**I solved the same problem by upgrading pytest module via pip command:**

    pip install -U pytest


    python -m pip install --upgrade pytest
(anaconda prompt or cmd)

this should solve your problem, as an updated version of pytest automatically takes care of attr issues.



I have the same error with `aws-encryption-cli` v2.
I have updated my `aws-cdk.core` lib and it work again with migrate to `aws-encryption-cli` V2.

    pip install -U aws-cdk.core
V2 doc: https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/crypto-cli-examples.html#cli-example-encrypt-file

github bug: https://github.com/aws/aws-cdk/issues/3293

The issue is that with `attrs==19.2.0` the `convert` attribute was removed ([source](https://www.attrs.org/en/stable/changelog.html#id96)).

`attr.ib(convert=int)` should be deprecated and replaced by `attr.ib(converter=int)`


You either need to update whatever is using attrs or you need to downgrade: `pip install &#39;attrs&lt;19.2.0&#39;`

Simply use the command

    conda update conda

and restart your system.

When building a docker image you normally use `docker build .`.

But I&#39;ve found that you can specify `--pull`, so the whole command would look like `docker build --pull .`

I&#39;m not sure about the purpose of `--pull`. Docker&#39;s [official documentation][1] says &quot;Always attempt to pull a newer version of the image&quot;, and I&#39;m not sure what this means in this context.

You use `docker build` to build a new image, and eventually publish it somewhere to a container registry. Why would you want to pull something that doesn&#39;t exist yet?

  [1]: https://docs.docker.com/engine/reference/commandline/build/

What&#39;s the purpose of &quot;docker build --pull&quot;?

`std::variant` vs. inheritance vs. other ways (performance)

This error occurred during automated testing of a python project on the CI server using `pytest`. I&#39;m using `pytest==4.0.2`. This error only just started to occur, previous pipelines seem to work fine.

The full error:
```
File &quot;/usr/local/lib/python3.7/site-packages/_pytest/tmpdir.py&quot;, line 35, in TempPathFactory
    lambda p: Path(os.path.abspath(six.text_type(p)))
TypeError: attrib() got an unexpected keyword argument &#39;convert&#39;
```

TypeError: attrib() got an unexpected keyword argument &#39;convert&#39;

This error occurred during automated testing of a python project on the CI server using <code>pytest</code>. I'm using <code>pytest==4.0.2</code>. This error only just started to occur, previous pipelines seem to work fine.
The full error:
<pre><code class="hljs language-css">File "/usr/local/lib/python3.7/site-packages/_pytest/tmpdir.py", line 35, in TempPathFactory
 lambda p: Path(os.path.abspath(six.text_type(p)))
TypeError: attrib() got an unexpected keyword argument 'convert'
</code></pre>

If we take `b = [1,2,3]` and if we try doing: `b+=(4,)` 

It returns `b = [1,2,3,4]`, but if we try doing `b = b + (4,)` it doesn&#39;t work.

    b = [1,2,3]
    b+=(4,) # Prints out b = [1,2,3,4]
    b = b + (4,) # Gives an error saying you can&#39;t add tuples and lists

I expected `b+=(4,)` to fail as you can&#39;t add a list and a tuple, but it worked. So I tried `b = b + (4,)` expecting to get the same result, but it didn&#39;t work.

Why does b+=(4,) work and b = b + (4,) doesn&#39;t work when b is a list?

I ran my Django project with new macOS Catalina and was running fine.  
I installed oh_my_zsh then I tried to run the same project it is crashing with the following errors. I uninstalled oh_my_zsh and tried again but it did not worked.


```
Path:                  /usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               3.7.4 (3.7.4)
Code Type:             X86-64 (Native)
Parent Process:        Python [7526]
Responsible:           Terminal [7510]
User ID:               501

Date/Time:             2019-10-07 20:59:20.675 +0530
OS Version:            Mac OS X 10.15 (19A582a)
Report Version:        12
Anonymous UUID:        CB7F20F6-96C0-4F63-9EC5-AFF3E0989687


Time Awake Since Boot: 3000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
/usr/lib/libcrypto.dylib
abort() called
Invalid dylib load. Clients should not load the unversioned libcrypto dylib as it does not have a stable ABI.

```

Python crashing on MacOS 10.15 Beta (19A582a) with &quot;/usr/lib/libcrypto.dylib&quot;

I am building the Dockerfile for python script which will run in minikube windows 10 system below is my Dockerfile



Building the docker using the below command
```docker build -t python-helloworld . ```

and loading that in minikube docker demon
```docker save python-helloworld | (eval $(minikube docker-env) &amp;&amp; docker load)```

Docker File



```
FROM python:3.7-alpine
#add user group and ass user to that group
RUN addgroup -S appgroup &amp;&amp; adduser -S appuser -G appgroup

#creates work dir	
WORKDIR /app

#copy python script to the container folder app
COPY helloworld.py /app/helloworld.py

#user is appuser
USER appuser

ENTRYPOINT  [&quot;python&quot;, &quot;/app/helloworld.py&quot;]
```	


 pythoncronjob.yml file (cron job file)
 
```
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: python-helloworld
spec:
  schedule: &quot;*/1 * * * *&quot;
  jobTemplate:
    spec:
      backoffLimit: 5
      template:
        spec:
          containers:
          - name: python-helloworld
            image: python-helloworld
            imagePullPolicy: IfNotPresent
            command: [/app/helloworld.py]
          restartPolicy: OnFailure
```

Below is the command to run this Kubernetes job
```kubectl create -f pythoncronjob.yml```


But getting the below  error job is not running scuessfully but when u ran the Dockerfile alone its work fine 

standard_init_linux.go:211: exec user process caused &quot;exec format error&quot;

standard_init_linux.go:211: exec user process caused &quot;exec format error&quot;

I&#39;m wondering how to use an f-string whilst using `r` to get a raw string literal. I currently have it as below but would like the option of allowing any name to replace `Alex` I was thinking adding an f-string and then replacing `Alex` with curly braces and putting username inside but this doesn&#39;t work with the `r`.

    username = input(&#39;Enter name&#39;)
    download_folder = r&#39;C:\Users\Alex\Downloads&#39;

Combine f-string and raw string literal

According to my understanding, partial functions are functions that we get by passing fewer parameters to a function than expected. For example, if this were directly valid in Python:

    &gt;&gt;&gt; def add(x,y):
    ...    return x+y
    ... 
    &gt;&gt;&gt; new_function = add(1)
    &gt;&gt;&gt; new_function(2)
    3

In the snippet above, `new_function` is a partial function. However, according to the [Haskell Wiki][1], the definition of partial function is 

&gt; A partial function is a function that is not defined for all possible arguments of the specified type.

so, my question is: what exactly is meant by &quot;partial function&quot;?


  [1]: https://wiki.haskell.org/Partial_functions

Content Type	Original Author	Original Content on Stackoverflow
Question	nitred	View Question on Stackoverflow
Solution 1 - Python	nitred	View Answer on Stackoverflow
Solution 2 - Python	Atsushi Odagiri	View Answer on Stackoverflow
Solution 3 - Python	iun1x	View Answer on Stackoverflow
Solution 4 - Python	code-freeze	View Answer on Stackoverflow
Solution 5 - Python	maxtess	View Answer on Stackoverflow
Solution 6 - Python	Martin Thoma	View Answer on Stackoverflow
Solution 7 - Python	Nikhil Parashar	View Answer on Stackoverflow

TypeError: attrib() got an unexpected keyword argument 'convert'

Python Problem Overview

Python Solutions

Solution 1 - Python

Solution 2 - Python

Solution 3 - Python

Solution 4 - Python

Solution 5 - Python

Solution 6 - Python

Solution 7 - Python

`std::variant` vs. inheritance vs. other ways (performance)

What's the purpose of "docker build --pull"?

Attributions