Python – ModuleNotFoundError: No module named ‘fcntl’

for flask application run using gunicorn

$ pip install gunicorn
$ gunicorn --bind 0.0.0.0:8000 app:app

getting error

Traceback (most recent call last):
File "C:\Users\shubham\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 193, in _run_module_as_main
"main", mod_spec)
File "C:\Users\shubham\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in run_code
exec(code, run_globals)
File "C:\Users\shubham\Desktop\Full_stack_developer\venv\Scripts\gunicorn.exe_main.py", line 5, in
File "c:\users\shubham\desktop\full_stack_developer\venv\lib\site-packages\gunicorn\app\wsgiapp.py", line 9, in
from gunicorn.app.base import Application
File "c:\users\shubham\desktop\full_stack_developer\venv\lib\site-packages\gunicorn\app\base.py", line 11, in
from gunicorn import util
File "c:\users\shubham\desktop\full_stack_developer\venv\lib\site-packages\gunicorn\util.py", line 9, in
import fcntl
ModuleNotFoundError: No module named 'fcntl'