[英]Can't import flask-marshmallow into python3 project
I have only python 3.8.5 installed.我只安装了 python 3.8.5。
I started diving into Python and Flask for the first time (I'm coming from the javascript side of things).我第一次开始深入研究 Python 和 Flask(我来自 javascript 方面)。 I've already ran into an interesting issue in just my first few lines of code.
在我的前几行代码中,我已经遇到了一个有趣的问题。
I was able to run pipenv install flask flask-sqlalchemy flask-marshmallow marshmallow-sqlalchemy
and they all seemed to have installed just fine.我能够运行
pipenv install flask flask-sqlalchemy flask-marshmallow marshmallow-sqlalchemy
并且它们似乎都安装得很好。 They all appear in the pipfile.lock.它们都出现在 pipfile.lock 中。 flask-marshmallow is version 0.13.0.
烧瓶棉花糖是 0.13.0 版。
When I started coding, I was able to import flask and flask_sqlalchemy with no issues.当我开始编码时,我能够毫无问题地导入flask和flask_sqlalchemy。 Intellisense even helped me out with them.
Intellisense 甚至帮我解决了这些问题。 But
from flask-marshmallow import Marshmallow
didn't seem to work.但是
from flask-marshmallow import Marshmallow
似乎没有用。
When I ran python app.py
I get the following error当我运行
python app.py
,出现以下错误
Traceback (most recent call last):
File "app.py", line 3, in <module>
from flask_marshmallow import Marshmallow
ModuleNotFoundError: No module named 'flask_marshmallow'
I've tried uninstalling flask-marshmallow and marshmallow and reinstalling.我试过卸载烧瓶棉花糖和棉花糖并重新安装。 The console always says the installation is successful but I can't seem to import it when all the other packages seem to work fine.
控制台总是说安装成功,但当所有其他包似乎都运行良好时,我似乎无法导入它。
What a great start to a new language xD Here is the whole file so far for reference, if I remove the marshmallow line it starts without any issues新语言的良好开端 xD 这是迄今为止的整个文件供参考,如果我删除棉花糖行,它开始时没有任何问题
from flask import Flask, request, jsonify
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow
import os
app = Flask(__name__)
if __name__ == "__main__":
app.run(debug=True)
我建议检查站点包文件并确保它已安装在其中,如果没有,则将其安装在其他目录中 也尝试在另一个普通的 python 文件中使用它并检查它是否也有效 检查语法我知道我知道它显而易见,但只是说
Make sure that, because you have created a pipenv
, you have set the Python interpreter path correctly in your IDE.请确保,因为您已经创建了
pipenv
,您已经在 IDE 中正确设置了 Python 解释器路径。
I was facing the exact issue (and that is how I reached this question).我正面临着确切的问题(这就是我提出这个问题的方式)。 I am using VS code, was using
python3.8
and pipenv
.我正在使用 VS 代码,正在使用
python3.8
和pipenv
。
Even though I have installed the packages using pip3
, I was facing import issues while running the code.即使我已经使用
pip3
安装了软件包,我在运行代码时也pip3
导入问题。 After a futile search on the Internet, I realised that the issue was very silly.在网上搜索了一番,发现这个问题很愚蠢。
The Python interpreter path ( Cntrl+Shift+P
-> Select Interpreter
) was not set to the newly created pipenv
. Python 解释器路径(
Cntrl+Shift+P
-> Select Interpreter
)未设置为新创建的pipenv
。 After I have set the interpreter path properly, the code resumed to function as expected.正确设置解释器路径后,代码恢复正常运行。
In my case I was trying to run the command flask db init
, and it would give the error above.在我的情况下,我试图运行命令
flask db init
,它会给出上面的错误。 I got it to work by running the command with sudo privileges sudo flask db init
.我通过使用 sudo 权限
sudo flask db init
运行命令来让它工作。 I hope this can help someone else out in a similar situation!我希望这可以帮助其他遇到类似情况的人!
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