Problem in autocompletion of class attributes in Spyder 4 editor

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

On Spyder 3.6.6, it was possible to watch the attributes and methods of a loaded object in the editor (thanks to rope and jedi). With python 4.0.0, it is not possible to visualize them. I’m not sure if this is a problem from Kite App or another change in the Spyder 4.0.0 new Completion and linting functionalities. I tried several configurations (by changing Completion and Linting parameters) to retrieve my previous Spyder user experience but without success. I don’t see what’s the problem here.

Note : I’m aware and tried to configure Adding libraries from PYTHONPATH to the Kite index . But it does not seem to be the problem.

What steps reproduce the problem?

Simply create file myclass.py with a class with one attribute:

class MyClass():
    def __init__(self,param):
        self.param=param

Then import myclass and create an object A with param=10, for instance:

import myclass
A=myclass.MyClass(10)
A.

What is the expected output? What do you see instead?

On Spyder 4.0.0 editor autocompletion after the dot shows ‘ArithmeticError; AssertionError;…’ while in Spyder 3.6 editor autocompletion suggested my usual methods and attribute loaded in My_Class. Here My_Class.param.

PS: I did not produce a screenshot since autocompletion suggestions disappear when prt scr

Versions

• Spyder version: 3.3.6 and 4.0.0
• Python version: 3.7.3
• Qt version: 5.9.7
• PyQt version: 5.9.2
• Operating System name/version: Ubuntu 18.04.3

Dependencies

cloudpickle >=0.5.0 : 1.0.0 (OK) pygments >=2.0 : 2.4.0 (OK) qtconsole >=4.6.0 : 4.6.0 (OK) nbconvert >=4.0 : 5.5.0 (OK) sphinx >=0.6.6 : 2.0.1 (OK) pylint >=0.25 : 2.3.1 (OK) psutil >=0.3 : 5.6.2 (OK) qtawesome >=0.5.7 : 0.5.7 (OK) qtpy >=1.5.0 : 1.7.1 (OK) pickleshare >=0.4 : 0.7.5 (OK) zmq >=17 : 18.0.0 (OK) chardet >=2.0.0 : 3.0.4 (OK) numpydoc >=0.6.0 : 0.9.1 (OK) spyder_kernels >=1.8.1;<2.0.0: 1.8.1 (OK) qdarkstyle >=2.7 : 2.7 (OK) atomicwrites >=1.2.0 : 1.3.0 (OK) diff_match_patch >=20181111 : 20181111 (OK) intervaltree : None (OK) watchdog : None (OK) keyring : None (OK) pexpect >=4.4.0 : 4.7.0 (OK) pympler : None (OK) sympy >=0.7.3 : 1.4 (OK) cython >=0.21 : None (NOK) IPython >=4.0 : 7.5.0 (OK) matplotlib >=2.0.0 : 3.1.0rc2 (OK) pandas >=0.13.1 : None (NOK) numpy >=1.7 : 1.16.3 (OK) scipy >=0.17.0 : 1.2.1 (OK) pyls >=0.31.2;<0.32.0 : 0.31.2 (OK) xdg >=0.26 : 0.26 (OK) rtree >=0.8.3 : 0.9.3 (OK)

[ElieGouzien]

I can confirm this problem still exist in 4.1.3. A minimal example would be:

d = {}
d.

even when requesting manually completion nothing happens.

[venkatgmrit05]

I agree with you. I do apologize. Thank you for working on the fix. I am looking forward to it. I appreciate the work you guys do on Spyder. Regards, Uma Venkat, Karanam MSME, SUNY Buffalo [phone] Linkedin: https://www.linkedin.com/in/umavenkat-karanam-0568341b/

On Thu, Jun 25, 2020 at 5:22 PM Carlos Cordoba [e-mail] wrote:

@venkatgmrit05 https://github.com/venkatgmrit05, please don’t post random comments about your frustrations with Spyder 4 in other people’s issues. That’s simply not polite.

About the issues you’re having with code completion and linting, many people have reported the same problem but we couldn’t find a way to reproduce it until very recently (a bit more than a month). So we didn’t know how to fix it.

After that, we’ve put a ton of effort on making that part of our codebase more robust and error proof, so (hopefully) those problems will be much less frequent after we release version 4.1.4 next week.

I didn’t understand your problems with the Variable Explorer, so please open a new issue about them and don’t forget to upload screenshots or (better yet) animated gifs (that you can create with the Licecap program) for us to be able to reproduce them.

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