Intellisense shows wrong autocomplete if module names are the same as one from the stdlib #1228

Environment data

• VS Code version: 1.21.1
• Extension version (available under the Extensions sidebar): 2018.2.1
• OS and version: macOS Sierra 10.12.6
• Python version: 3.6.4
• Type of virtual environment used: venv

Steps to reproduce:

1. Create a directory with one package foo
2. Inside foo, create a file named the same as a builtin (or 3rd party library). Say json.py
3. Inside foo, open a new file inside bar.py
4. Start typing import json.

Actual behavior

No intellisense autocomplete popup appears.

Expected behavior

Intellisense autocomplete popup listing {} encoder, {} decoder, {} scanner, {} tests and {} tool should appear.

Logs

Output from Python output panel
None

Output from Console window (Help->Developer Tools menu)
None