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ModuleNotFoundError: No module named 'flask'

(venv)

김자윤@LAPTOP-R0F4PPEE MINGW64 ~/Desktop/sparta/Projects/01. prac

$ "c:/Users/김자윤/Desktop/sparta/Projects/01. prac/venv/Scripts/python.exe"

Python 3.8.6 (tags/v3.8.6:db45529, Sep 23 2020, 15:52:53) [MSC v.1927 64 bit (AMD64)] on win32

Type "help", "copyright", "credits" or "license" for more information.

>>> app.run('0.0.0.0',port=5000,debug=True)

Traceback (most recent call last):

 File "<stdin>", line 1, in <module>

NameError: name 'app' is not defined

>>> "c:/Users/김자윤/Desktop/sparta/Projects/01. prac/venv/Scripts/python.exe" "c:/Users/김자윤/Desktop/sparta/Projects/01. prac/app.py"

'c:/Users/김자윤/Desktop/sparta/Projects/01. prac/venv/Scripts/python.exec:/Users/김자윤/Desktop/sparta/Projects/01. prac/app.py'

>>>