Upgrade python packages from requirements.txt using pip command

Question

I already answered this question here. Here's my solution:

Because there was no easy way for upgrading package by package, and updating the requirements.txt file, I wrote this pip-upgrader which also updates the versions in your requirements.txt file for the packages chosen (or all packages).

Installation

pip install pip-upgrader

Usage

Activate your virtualenv (important, because it will also install the new versions of upgraded packages in current virtualenv).

cd into your project directory, then run:

pip-upgrade

Advanced usage

If the requirements are placed in a non-standard location, send them as arguments:

pip-upgrade path/to/requirements.txt

If you already know what package you want to upgrade, simply send them as arguments:

pip-upgrade -p django -p celery -p dateutil

If you need to upgrade to pre-release / post-release version, add --prerelease argument to your command.

Full disclosure: I wrote this package.

you can try:

pip install --upgrade --force-reinstall -r requirements.txt

You can also ignore installed package and install the new one :

pip install --ignore-installed -r requirements.txt

No. Your requirements file has been pinned to specific versions. If your requirements are set to that version, you should not be trying to upgrade beyond those versions. If you need to upgrade, then you need to switch to unpinned versions in your requirements file.

Example:

lxml>=2.2.0

This would upgrade lxml to any version newer than 2.2.0

lxml>=2.2.0,<2.3.0

This would upgrade lxml to the most recent version between 2.2.0 and 2.3.0.

I suggest freezing all of your dependencies in order to have predictable builds.

When doing that, you can update all dependencies at once like this:

sed -i '' 's/[~=]=/>=/' requirements.txt
pip install -U -r requirements.txt
pip freeze | sed 's/==/~=/' > requirements.txt

Having done the above, test your project with the new set of packages and eventually commit the requirements.txt file to the repository while still allowing for installing hot-fixes.