SyntaxError: Non-UTF-8 code starting with '\x90' in file flask.exe

[whg517]

Expected Behavior

In flask website use tutorials, in the third step flask run to run my web, appear this mistake.
In py files line first, I use the # - coding: utf-8 -- specified utf-8.
I'm writing code in Pycharm. Start the web with the CMD run command.
I copy the project directory into ubuntu and it works.
No related problems were found on the Internet.
Please give us some ideas and solve this problem.
thank you

Below is a screenshot of the Pycharm

Tell us what should happen.

kevin@DESKTOP-5KM5T43:~/workspaces/flaskr$ flask run
 * Serving Flask app "flaskr"
 * Forcing debug mode on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 244-441-781

Actual Behavior

Tell us what happens instead.

D:\workspace\development\python\WebProject\flaskr>flask run
 * Serving Flask app "flaskr"
 * Forcing debug mode on
 * Restarting with stat
  File "D:\ProgramData\Anaconda3\Scripts\flask.exe", line 1
SyntaxError: Non-UTF-8 code starting with '\x90' in file D:\ProgramData\Anaconda3\Scripts\flask.exe on line 1, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details

Environment

• Operating system

OS name: Microsoft Windows 10 professional edition
OS version: 10.0.16299 temporary lack of Build 16299

• Python version:

D:\workspace\development\python\WebProject\flaskr>python --version
Python 3.6.3 :: Anaconda, Inc.

• Flask version:

D:\workspace\development\python\WebProject\flaskr>python -m flask --version
Flask 0.12.2
Python 3.6.3 |Anaconda, Inc.| (default, Oct 15 2017, 03:27:45) [MSC v.1900 64 bit (AMD64)]

• Werkzeug version:

Werkzeug (0.12.2)

[greyli]

Duplicate of pallets/werkzeug#1136.

[greyli]

Currently you can use python -m flask run, until the bug was fixed.

[whg517]

@greyli Thank you very much. its working

[1992Zz]

Currently you can use python -m flask run, until the bug was fixed.

Could you tell me more about it?