importing dash causes running of any test.py in same folder as app.py

[fohrloop]

I bumped up to a little bit unexpected behaviour: If you import dash, any file called test.py in the same folder will be imported, causing sometimes unexpected behaviour.

MWE

• Create empty folder with app.py and test.py

# test.py
print('In test.py')

# app.py
print('1 in app.py')
import dash
print('2 in app.py')

Output

PS C:\tmp\test_dash> python .\app.py
1 in app.py
In test.py
2 in app.py

What would be expected?

One could expect that import dash would not run any files called test.py.

Versions

dash                         1.13.4    
dash-core-components         1.10.1
dash-html-components         1.0.3
dash-renderer                1.5.1

[elfjes]

This is an issue with the future package that's used for py2/py3 compatibility, not with dash, you may want to pick it up with them. It tries to load a number of modules when importing future.moves defined here:

Question is, with py2 no longer being maintained, does dash still need to use this package, eg here?

[alexcjohnson]

Duplicate of #1143
I'm afraid we're not quite ready to drop py2 support yet, but #1143 points to some ways we can at least make things work better, though we probably can't prevent future from importing test and org.