Issue Type: Bug

When trying to run a cell that contains code such as below, I get a syntax error. If I remove the triple quoted comment, the cell runs fine.

#%%
import requests

def download(url, filename):
""" utility function to download a file """
response = requests.get(url, stream=True)
with open(filename, "wb") as handle:
for data in response.iter_content():
handle.write(data)

Extension version: 2019.3.6215
VS Code version: Code 1.32.3 (a3db5be9b5c6ba46bb7555ec5d60178ecc2eaae4, 2019-03-14T23:43:35.476Z)
OS version: Windows_NT x64 10.0.17763