I'm working in Python and using Flask. When I run my main Python file on my computer, it works perfectly, but when I activate venv and run the Flask Python file in the terminal, it says that my main Python file has "No Module Named bs4." Any comments or advice is greatly appreciated.
Activate the virtualenv, and then install BeautifulSoup4:
$ pip install BeautifulSoup4
When you installed bs4 with easy_install, you installed it system-wide. So your system python can import it, but not your virtualenv python.
If you do not need bs4 to be installed in your system python path, uninstall it and keep it in your virtualenv.
For more information about virtualenvs, read this
For python2.x:
sudo pip install BeautifulSoup4
For python3:
sudo apt-get install python3-bs4
Just tagging onto Balthazar's answer. Running
pip install BeautifulSoup4
did not work for me. Instead use
pip install beautifulsoup4
If you use Pycharm, go to preferences - project interpreter - install bs4. If you try to install BeautifulSoup, it will still show that no module named bs4.
I will advise you to uninstall the bs4 library by using this command:
pip uninstall bs4
and then install it using this command:
sudo apt-get install python3-bs4
I was facing the same problem in my Linux Ubuntu when I used the following command for installing bs4 library:
pip install bs4
If you are using Anaconda for package management, following should do:
conda install -c anaconda beautifulsoup4
pip3 install BeautifulSoup4
Try this. It works for me.
The easiest is using easy_install.
easy_install bs4
It will work if pip fails.
Try this:
sudo python3 -m pip install bs4
来源：https://stackoverflow.com/questions/11783875/importerror-no-module-named-bs4-beautifulsoup