Django Eclipse Pydev environment problem - python

Really silly one going on here...
I need to use this bit of code...
from sentry.client.handlers import SentryHandler
if SentryHandler not in map(lambda x: x.__class__, logger.handlers):
logger.addHandler(SentryHandler())
I just can't get it to import in Eclipse/Pydev. I get
Unresolved import: SentryHandler
Unused import: SentryHandler
If I do
from sentry.client.handlers import *
it imports without error in Eclipse but I can't access the SentryHandler class.
The code definitely exists in site-packages directory. I have other packages in the site-packages directory that work perfectly.
The code actually works. It is just an Eclipse issue.
I also have an issue with one other module:
import httplib2
It works also but Eclipse gives me an error importing. I am obviously missing a bit of Eclipse / Pydev knowledge.
Any ideas how to get it working.

I had the same problem. Here's what worked for me:
Go back into the Pydev configuration: window > preferences > pydev > Interpreter - (Python/Jython/IronPython)
I'm using the Python interpreter.
Although my PYTHONPATH was setup properly to include dist-packages, I still needed to hit apply (or re-apply in my case) for it to reprocess the cache. After hitting apply, the error from importing Sentry went away.
This step is covered in the Pydev manual for the interpreter configuration page:
http://pydev.org/manual_101_interpreter.html#what-if-i-add-something-new-in-my-system-pythonpath-after-configuring-it

Eclipse does not do runtime checking. If the handlers module does not contain an explicit definition of the SentryHandler class and imports it from another module (i.e. as a convenience) then Pydev's Parser cannot find it. I suspect this is what is happening to you however i would have to check sentry's code to confirm.

Related

Problem in PyCharm with import function/class from standard module

I am coding in PyCharm and to set up the environment I use poetry, python version 3.10
Everything was working ok, but starting from one moment of time I got problem with module imports.
But the problem does not relate to the import of the whole module but to the import of class or function from module.
You can see as an example that BaseSettings from pydantic is underlined with red wavy line and Pycharm says that BaseSettings is unresolved reference.
I tried
to invalidate cache in Pycharm
install, uninstall the module (poetry add/remove)
change the environment and return back
marked folder as a source root (assume it is irrelevant but anyway)
but unfortunately nothing helped
aiohttp.client.py
aiohttp.init.py
I found the out what was the reason for this strange behaviour. It was the problem of PyCharm IDE. PyCharm stopped recognising init.py as python files that produced import errors. Actually I do not know why this happened since I did not changed any settings or updated PyCharm.
The solution was to manually add pattern "init.py" to python files mask in Settings -> Editor ->File types -> Python (please see screenshot in the attachment)

VS Code / Pylance / Pylint Cannot resolve import

The Summary
I have a python import that works when run from the VS Code terminal, but that VS Code's editor is giving warnings about. Also, "Go to Definition" doesn't work.
The Problem
I have created a docker container from the image tensorflow/tensorflow:1.15.2-py3, then attach to it using VS Code's "Remote- Containers" extension. Then I've created the following file in the container.
main.py:
import tensorflow.compat.v1 as tf
print(tf.__version__)
This runs fine in the VS Code terminal, but the Editor and the Problems pane both give me an unresolved import 'tensorflow.compat' warning. Also "Go to Definition" doesn't work on tf.__version__.
I'm using several extensions but I believe the relevant ones are the Microsoft Python extension (installed in the container), as well as the Remote - Containers extension, and now the Pylance extension (installed in the container).
The Things I've Tried
I've tried this with the default pylint, and then also after installing pylance with similar results. I've also seen some docs about similar issues, but they were related to setting the correct source folder location for modules that were part of a project. In contrast, my code within my project seems to work fine with imports/go-to-definition. It's external libraries that don't seem to work.
Also, for the sake of this minimal example, I've attached to the container as root, so I am guessing it's not an issue of elevated permissions.
I've also tried disabling all the extensions except the following, but got the same results:
Remote - Containers (local)
Remote - WSL (local)
Python (on container)
Jupyter (on container, required by Python for some reason)
All the extensions above are on the latest versions.
I've also fiddled around with setting python.autocomplete.extraPaths, but I'm not sure what the right path is. It also seems like the wrong thing to have to add libraries to the path that are installed in the global python installation, especially since I'm not using a virtual environment (it being in a docker container and all).
The Question
How do I fix VS Code so that it recognizes this import and I can use "Go to Definition" to explore these tensorflow functions/classes/etc?
tldr;
TensorFlow defines some of its modules in a way that pylint & pylance aren't able to recognize. These errors don't necessarily indicate an incorrect setup.
To Fix:
pylint: The pylint warnings are safely ignored.
Intellisense: The best way I know of at the moment to fix Intellisense is to replace the imports with the modules they are aliasing (found by importing alias in a repl as x then running help(x)). Because the target of the alias in my case is an internal name, you probably don't want to check in these changes to source control. Not ideal.
Details
Regarding the linting: It seems that tensorflow defines its modules in a way that the tools can't understand. Also, it appears that the package is an alias of some kind to another package. For example:
import tensorflow.compat.v1 as tf
tf.estimator.RunConfig()
The above code gives the pylint warning and breaks intellisense. But if you manually import the above in a REPL and run help(tf), it shows you the below package, which you can use instead:
import tensorflow_core._api.v1.compat.v1 as tf
tf.estimator.RunConfig()
This second example does not cause the pylint warning. Also the Intellisense features (Go to definition, Ctrl+Click, etc) work with this second example.
However, based on the _api, it looks like that second package name is an internal namespace, so I'm guessing it is probably best to only use this internal name for local debugging.
Confirmation/Tickets
pylint: I've found a ticket about pylint having issues with a couple tensorflow imports that looks related.
Intellisense: I've opened a ticket with pylance.
So for me I was trying to
import pandas as pd
but I got the error
"pd" is not accessedPylance (module) pd
SO what I did was reload the extension Python IntelliSense(Pylance) and that solved my issue.
I had the same problem but with all kinds of packages.
My solution was to go to the VSCode settings and search for "python.analysis.extraPaths", and add the path to your site-packages.
In my case, I added C:\Code\Python39\Lib\site-packages, and now it's working fine.
What, usually, solves the pylance issues for me is pointing my Python interpreter to the virtualenv one.
Open the command palette Ctrl + Shift + P
Type: Python: Select Interpreter
It will show a list of all the python Interpreters it actually detects:
Select Enter interpreter path
Type in the path to your local venv/bin folder or click find to navigate using the file explorer.
Your path should look something like:
venv/bin/python3.9
i changed "import tensorflow as tf" to "from tensorflow import compat as tf"
it ll even work for tf.gfile.Gfile()

UnresolvedError on importing package in eclipse

I get an Unresolved Error while importing a package (bigfloat) by import bigfloat in PyDev in eclipse. However on from bigfloat import * the error is resolved. What is the reason behind this?
I used easy_install to download and install the bigfloat package. Does it not update the python_path in the process??
I have also tried adding the library as an external library in the pythonpath properties, but I still get the same error.
Is the error being reported by the PyDev / eclipse IDE, or does it happen when you run the code?
In the first case, this is probably due to eclipse caching the information about what packages you have installed.
What you need to do is go to "Preferences -> Pydev -> Interpreter - Python" where you define the python interpreter to be used. Remove the current interpreter, and add it back in again.
This will cause eclipse to re-read all the path information and it should clear the error.

How do I add PIL to PyDev in Eclipse, so i could import it and use it in my project?

I am trying to work with PIL in my project but the pydev can't seem to find it in my project. First of all I can see it when I enter the python shell, I can import it and I see it in the python sys.path. Second, I Added it to the PYTHONPATH in eclipse.
I restarted eclipse, but still, when I try to do "from PIL import Image" I am getting: "unresolved import".
Can any one please help me here, all other packages I used until now worked great the same way.... and i really need to use PIL
Try to go to Window -> Preferences -> Pydev-> Interpreter -> Python Interpreter -> Forced Builtins tab.
Then add a PIL entry and apply.
I've had the same unresolved import error when tried to import from this particular package (other packages worked fine), and found this information which finally helped me.
Had the same problem here.
Got it resolved by adding /usr/share/pyshared to the Libraries tab in window->preferences->pydev->Interpreter - Python.
There were a lot of /usr/lib/python* paths with the compiled libraries (the C stuff with python bindings) where included already, but not /usr/share... parts with the source.

How do I handle an UnresolvedImport Eclipse (Python)

When I write import MySQLdb in Eclipse using the PyDev plugin, I get an unresolved import. However, the program runs without error. I can add an annotation to get the error to go away, but what is the right way to handle this?
How can I help Eclipse know that MySQLdb is there?
It sounds like MySQLdb is somewhere on your sys.path, but not on your Eclipse project's PYTHONPATH; in other words, Eclipse thinks you're going to get an import error at runtime because you haven't fully configured it. Google seems to say that you can alter this setting in Window->Preferences->Preferences->PyDev->Python Interpreter to include the path to your MySQLdb module.
For some help figuring out where MySQLdb might be living on your system:
Open an interactive interpreter,
import MySQLdb
If that succeeds, you can get a hint from: print MySQLdb.__file__; it may be the __init__ file in the package that you need to point the path at.
cdleary above provided the reason two years ago, but this may be easier. Basically, one reinstalls the interpreter.
Select Window - > Preferences -> PyDev -> Interpreter - Python
Select the python interpreter in the upper pane
Click on Remove
Click on Auto Config
Agree to everything.
This works on Fedora 17 using the Eclipse 4.2.0 that came with the package management.
Fixed this by doing two things:
1) Added MySQLdb egg to the PYTHONPATH under Window->Preferences->Preferences->PyDev->Python Interpreter.
C:\Python26\Lib\site-packages\MySQL_python-1.2.3c1-py2.6-win32.egg
2) Close and re-open the .py file that had the red x.
Adding the egg works, but the error remains. The solution for that error can be found by adding
##UnresolvedImport
To the import statement, as in:
import web ##UnresolvedImport
Source: http://klaith.wordpress.com/2009/06/12/pydev-unresolved-import-errors/
I once had a similar problem on Windows (never encountered this on Linux though) and I discovered that I had to include the .egg directory of my library to my PYTHONPATH.
For example my PYTHONPATH (Pydev/Interpreter - Python/Libraries) included:
C:\Python26\Lib\site-packages
and I had to add:
C:\Python26\Lib\site-packages\jinja2-2.2.1-py2.6.egg
to use jinja.
This surely works I just tried it with Pmw package. Unzip package in site-packages. Then remove python interpreter from eclipse and then add it again. Your import errors shall go away. also you may want add module to forced builtins. See How do I fix PyDev "Undefined variable from import" errors? and http://pydev.org/manual_101_interpreter.html
I had a similar issue and the following is what I did to solve my issue. I have a Windows 8 Machine, Python 2.7 installed and running my stuff through eclipse.
Some Background:
When I did an easy install it tries to install MySQL-python 1.2.5 which failed with an error: Unable to find vcvarsall.bat. I did an easy_install of pip and tried the pip install which also failed with a similar error. They both reference vcvarsall.bat which is something to do with visual studio, since I don't have visual studio on my machine, it left me looking for a different solution, which I share below.
The Solution:
Reinstall python 2.7.8 from 2.7.8 from https://www.python.org/download this will add any missing registry settings, which is required by the next install.
Install 1.2.4 from http://pypi.python.org/pypi/MySQL-python/1.2.4
After I did both of those installs, I reopened eclipse and got a prompt to update the paths of eclipse which I accepted, after that I was able to query my MySQL db.
import MySQLdb
If this code show error like this:
Unresolved import: MySQLdb
you should add D:\Python27\Lib\site-packages\MySQLdb to your sys.path.
D:\Python27\Lib\site-packages\MySQLdb is this location where you install MySQLdb in your computer disk. After this step, the error will disappear.

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