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Python 導入錯誤 - 沒有模組

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Python 導入錯誤 - 沒有模組

抱歉，這是基本的。我遵循了一個相當簡單的教程，但在嘗試在本地運行 Flask 時出現此錯誤：

Traceback (most recent call last):
  File "/Users/james/opt/anaconda3/lib/python3.8/site-packages/flask/cli.py", line 240, in locate_app
    __import__(module_name)
  File "/Users/james/Documents/GitHub/flask-app-blueprint/project/__init__.py", line 3, in <module>
    from flask_sqlalchemy import SQLAlchemy
ModuleNotFoundError: No module named 'flask_sqlalchemy'

但是，在相同的環境中，當我執行 pip list 時，它告訴我我有該模組：Flask-SQLAlchemy 2.2

(venv) (base) james flask-app-blueprint % pip3 install flask-sqlalchemy
Requirement already satisfied: flask-sqlalchemy in ./venv/lib/python3.8/site-packages (2.5.1)
Requirement already satisfied: Flask>=0.10 in ./venv/lib/python3.8/site-packages (from flask-sqlalchemy) (1.0.2)
Requirement already satisfied: SQLAlchemy>=0.8.0 in ./venv/lib/python3.8/site-packages (from flask-sqlalchemy) (1.3.3)
Requirement already satisfied: Jinja2>=2.10 in ./venv/lib/python3.8/site-packages (from Flask>=0.10->flask-sqlalchemy) (2.11.3)
Requirement already satisfied: itsdangerous>=0.24 in ./venv/lib/python3.8/site-packages (from Flask>=0.10->flask-sqlalchemy) (0.24)
Requirement already satisfied: Werkzeug>=0.14 in ./venv/lib/python3.8/site-packages (from Flask>=0.10->flask-sqlalchemy) (2.0.1)
Requirement already satisfied: click>=5.1 in ./venv/lib/python3.8/site-packages (from Flask>=0.10->flask-sqlalchemy) (7.0)
Requirement already satisfied: MarkupSafe>=0.23 in ./venv/lib/python3.8/site-packages (from Jinja2>=2.10->Flask>=0.10->flask-sqlalchemy) (2.0.1)

最重要的是，根據我所看到的內容，我文件中的程式碼看起來是正確的：

# IMPORTS
from flask import Flask, render_template
from flask_sqlalchemy import SQLAlchemy

我可能哪裡出錯了？

答案1

問題似乎是，當您執行 Flask 腳本時，它使用的環境（anaconda）沒有flask_sqlalchemy安裝該套件，這使得腳本失敗，但是當您檢查它是否已安裝時，您venv在確實安裝了它的。

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