이대로 입력했는데 강의 화면과 같은 문구가 아닌

/Users/sojeong/Desktop/Sparta/projects/prac/venv/bin/python /Users/sojeong/Desktop/Sparta/projects/prac/app.py

Traceback (most recent call last):

 File "/Users/sojeong/Desktop/Sparta/projects/prac/app.py", line 1, in <module>

  from flask import Flask

ModuleNotFoundError: No module named 'flask'

종료 코드 1(으)로 완료된 프로세스

라고 뜨는데 뭐가 문제일까요..?

from flask import Flask
app = Flask(__name__)

@app.route('/')
def home():
   return 'This is Home!'

if __name__ == '__main__':
   app.run('0.0.0.0',port=5000,debug=True)