Pylint and Fabric context manager

Question

I am working in python script (windows located) to remotely execute (another) script in a linux server. I need to change the directory and keep the state for executing the script and after research I found fabric's help could resolve the problem. However it hits pylint error:

E1129:Context manager 'generator' doesn't implement __enter__ and __exit__.and

Found some comments to this problem like the ones here, however I do not get the point, not sure what is happening and how to resolve. As far as I understood the fabric context manager cd works along with the "with" statement, many examples look like my code, few people reports a solution for this behaviour, or it is me who is a beginner does not understand. I am using VSCode as IDE, python 3.7 and fabric3. Hope you can help me to clarify what is happening. Thank you!

This is the code I am using now:

from fabric.api import cd, run, task, run, env
from fabric.context_managers import cd

env.hosts = ['xxx@server.domain.com:22']
env.password = ['myp@ss']
DIR = 'elfar/elfar'

def go_to_script():
    with cd(DIR):
        run("ls")

So need to remove the error? pylint's does not allow me to see any result. — Sora, Sep 26 '18 at 02:27
Thanks for notice that!, just realize as @iBug mentioned, it is Pylint's issue. — Sora, Sep 26 '18 at 03:36

score 0 · Answer 1 · answered Sep 26 '18 at 03:47

I seems that this issue has been around for very long time, it is called "false positive not-context-manager error". The solution is skip the warning by disabling the not-context-manager pylint check. I achieved it following the steps below:

Go to the project folder and Create a pylintrc file
```
pylint --generate-rcfile > ~/.pylintrc
```
Open the file and locate the lines:
```
# --disable=W".
disable=
```
Add not-context-manager at the end of the list as they did it here

Pylint and Fabric context manager

1 Answers1