I using Python3.7 (Flask) webapp in Azure 

also i was confirmed web app Stack runtime running Python3.7 too

The project working fine in 127.0.0.1:5000 (localhost)

When i try deployment script into azure webapp (App service)

i got this error :- 

```
File "/home/site/wwwroot/init.py", line 2, in <module>
2019-12-16T15:50:45.275997228Z     from flask_sqlalchemy import SQLAlchemy
2019-12-16T15:50:45.276001128Z ModuleNotFoundError: No module named 'flask_sqlalchemy'

```

i already install Flask-SQLAlchemy in venv (env)
runnning 

```
$ pip install Flask-SQLAlchemy

```

also i import Flask-SQLAlchemy into requirements.txt 

```
flask_sqlalchemy==2.4.1
sqlalchemy==1.3.11
click==6.7
Flask==1.0.2
itsdangerous==0.24
Jinja2==2.10
MarkupSafe==1.0
Werkzeug==0.14.1
flask_admin==1.5.3
flask_login==0.4.1
pyodbc==4.0.27

```

i also run 

```
$ pip install -r requirements.txt 

```

my pip version is 19

```
$ pip -V 
pip 19.0.3 from /<project_path>/venv/lib/python3.7/site-packages/pip (python 3.7)

```

package install in venv

```
$ ls venv/lib/python3.7/site-packages/
Flask-1.0.2.dist-info           flask_sqlalchemy
Flask_Admin-1.5.3-py3.7.egg-info    itsdangerous-0.24-py3.7.egg-info
Flask_Login-0.4.1-py3.7.egg-info    itsdangerous.py
Flask_SQLAlchemy-2.4.1.dist-info    jinja2
Jinja2-2.10.dist-info           markupsafe
MarkupSafe-1.0-py3.7.egg-info       pip
SQLAlchemy-1.3.11.dist-info     pip-19.0.3.dist-info
WTForms-2.2.1.dist-info         pkg_resources
Werkzeug-0.14.1.dist-info       pyodbc-4.0.27.dist-info
__pycache__             pyodbc.cpython-37m-darwin.so
click                   setuptools
click-6.7.dist-info         setuptools-40.8.0.dist-info
easy-install.pth            sqlalchemy
easy_install.py             werkzeug
flask                   wheel
flask_admin             wheel-0.33.6.dist-info
flask_login             wtforms

```

.