Duplicate symbols when using list comprehension or isinstance method #539

jahan01 commented on Tue Dec 25 2018

When using list comprehension in a method, variables assigned inside the comprehension is listed twice in the symbol list / outline view.

Same happens when isinstance method is used inside a method. Not sure if it is related to same issue as above because it causes all the symbols inside a function scope to be duplicated.

Sample Code:

class Test:
    
    def method(self, arg1, arg2):
        var1 = {}
        var2 = [_value for _key, _value in arg1.items()]
    
    def method2(self, param1, param2):
        test1 = {}
        test2 = []
        if isinstance(test, dict):
            test3 = 1

Note: I have disables jedi, and this happens in microsoft language server. Cannot use jedi right now because, jedi doesnt detect functions with return type annotation specified.

Environment data

• VS Code version: 1.30
• Extension version (available under the Extensions sidebar): 2018.12.1
• OS and version: OSX 10.14.1
• Python version (& distribution if applicable, e.g. Anaconda): 3.6 (Conda)
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): Conda

Expected behaviour

No duplicate symbols

Actual behaviour

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

tarting Microsoft Python language server.
##########Linting Output - mypy##########
##########Linting Output - pylint##########
************* Module test_symbols
Microsoft Python Language Server version 0.1.72.0
Initializing for /Users/me/anaconda3/envs/venv/bin/python

Derek Keeler (@d3r3kk) commented on Thu Jan 17 2019

Thanks for the report jahan01, I can reproduce this issue on the latest version of our extension + language server given the information you have provided.

Reproduced in latest insiders against extension version 2018.12.1:

Sample workspace:

Run conda create -n 3804_dup_sym to get a conda environment setup beforehand.

3804_duplicate_symbols.zip