pip

pip3 installs inside virtual environment with python3.6 failing due to ssl module not available

I followed the below steps for python3.6 installation in ubuntu 14.04 and virtualenv pip installs works fine. Python 3.6 Installation: sudo apt-get install python3-dev libffi-dev libssl-dev wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz tar xvf Python-3.6.0.tgz cd Python-3.6.0 ./configure –enable-optimizations make -j8 sudo make altinstall python3.6 If seeing the following error — zipimport.ZipImportError: can’t decompress data; zlib not available make: … Read more

Can pip.conf specify two index-url at the same time?

In your pip.conf, you will also have to add both of the index hosts as trusted, so would look something like this: [global] index-url = http://download.zope.org/simple trusted-host = download.zope.org pypi.org secondary.extra.host extra-index-url= http://pypi.org/simple http://secondary.extra.host/simple In this example, you have a primary index and two extra index urls and all hosts are trusted. If you don’t … Read more

How to change pip3 command to be pip?

You can use pip3 using the alias pip by adding alias to your .bashrc file. alias pip=pip3 or by adding a symlink named pip to your $PATH, which points to the pip3 binary. If there is no ~/.bashrc in your home directory on macOS, inputting alias pip=pip3 in your ~/.zprofile file has the same effect.

Difference between pip freeze and conda list

If the goal only is to list all the installed packages, pip list or conda list are the way to go. pip freeze, like conda list –export, is more for generating requirements files for your environment. For example, if you have created a package in your customized environment with certain dependencies, you can do conda … Read more