[BUG] dash will not import if test.py present in current dir.

[pete312]

This took a while for me to understand what was happening. If you have a file called test.py with import dash_html_components in it, dash will not import. Its often that you have a test.py script in your dir to test out dash but you would not expect that to interfere with an import of another dash program.

To recreate:

$ mkdir /tmp/dashtest
$ cd /tmp/dashtest
$ python3.6 --venv ve
$ ./ve/bin/pip install dash

Successfully installed Flask-1.1.2 Jinja2-2.11.2 MarkupSafe-1.1.1 Werkzeug-1.0.1 brotli-1.0.9 click-7.1.2 dash-1.15.0 dash-core-components-1.11.0 dash-html-components-1.1.0 dash-renderer-1.7.0 dash-table-4.10.0 flask-compress-1.5.0 future-0.18.2 itsdangerous-1.1.0 plotly-4.9.0 retrying-1.3.3 six-1.15.0


$ echo "import dash_html_components" > test.py
$ ./ve/bin/python -c "import dash" ; echo $?
Dash was not successfully imported. Make sure you don't have a file named
'dash.py' in your current directory.
1

$ mv test.py out.py
$ ./ve/bin/python -c "import dash" ; echo $?
0

[alexcjohnson]

duplicate of #1143