python - 将 Flask 与其他 python 库一起使用

Question

我遵循了这个不错的教程：https ://www.datasciencebytes.com/bytes/2015/02/24/running-a-flask-app-on-aws-ec2/使用“Ubuntu Server 18.04 LTS (HVM), SSD卷类型-”实例。

在我尝试使用额外的库之前，它工作得很好，比如jsonpickle, numpy,....

我试图遵循这个建议：在 python 中使用预安装的库或带有烧瓶的包并创建一个虚拟环境。

错误：

安装 numpy 并添加Import numpy到 flaskapp.py 之后。

pip install numpy
sudo apachectl Restart

http://ec2-18-994-77-099.eu-central-1.compute.amazonaws.com/不再起作用了。

调查/var/log/apache2/error.log

[Sat Nov 09 16:09:13.028377 2019] [wsgi:error] [pid 9187:tid 140012532033280] [client 77.185.61.27:53340] Traceback (most recent call last):
[Sat Nov 09 16:09:13.028396 2019] [wsgi:error] [pid 9187:tid 140012532033280] [client 77.185.61.27:53340]   File "/var/www/html/flaskapp/flaskapp.wsgi", line 4, in <module>
[Sat Nov 09 16:09:13.028450 2019] [wsgi:error] [pid 9187:tid 140012532033280] [client 77.185.61.27:53340]     from flaskapp import app as application
[Sat Nov 09 16:09:13.028461 2019] [wsgi:error] [pid 9187:tid 140012532033280] [client 77.185.61.27:53340]   File "/var/www/html/flaskapp/flaskapp.py", line 2, in <module>
[Sat Nov 09 16:09:13.028489 2019] [wsgi:error] [pid 9187:tid 140012532033280] [client 77.185.61.27:53340]     import numpy
[Sat Nov 09 16:09:13.028508 2019] [wsgi:error] [pid 9187:tid 140012532033280] 

[client 77.185.61.27:53340] **ImportError: No module named numpy**

启动实例后我遵循的所有步骤：

sudo apt-get update
sudo apt-get install apache2
sudo apt-get install libapache2-mod-wsgi

sudo apt-get install python-pip
sudo pip install flask

sudo apt install virtualenv
virtualenv --system-site-packages flaskyy

source flaskyy/bin/activate

mkdir ~/flaskapp
sudo ln -sT ~/flaskapp /var/www/html/flaskapp

cd ~/flaskapp
echo "Hello World" > index.html

（此时导航到http://ec2-18-994-77-099.eu-central-1.compute.amazonaws.com/flaskapp/显示 html）

http://ec2-18-994-77-099.eu-central-1.compute.amazonaws.com/flaskapp/

sudo vim /etc/apache2/sites-enabled/000-default.conf

标签： pythonapacheflaskvirtualenv