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=<tt>requirements.txt</tt> File= | =<tt>requirements.txt</tt> File= | ||
The <code>requirements.txt</code> allows you to specify which packages and versions should be installed. Typically, the <code>requirements.txt</code> file is located in the root of the project. | The <code>requirements.txt</code> allows you to specify which packages and versions should be installed. Typically, the <code>requirements.txt</code> file is located in the root of the project. The <code>requirements.txt</code> file can be generated with <code>[[#Freeze_Dependencies|pip freeze]]</code> command. | ||
==Example== | ==Example== | ||
<syntaxhighlight lang='text'> | <syntaxhighlight lang='text'> | ||
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virtualenv==16.3.0 | virtualenv==16.3.0 | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=Version= | =Version= | ||
<syntaxhighlight lang='bash'> | <syntaxhighlight lang='bash'> | ||
Revision as of 03:32, 11 January 2022
External
Internal
Overview
pip is the standard package manager for Python, that allows you install and manage package that are not part of the Python standard library. pip has been included with the Python installer since 3.4. pip looks for packages in PyPI
Installation
CentOS
yum install epel-release # On Amazon Linux, it works without this yum install python-pip
Upgrade
python -m pip install --upgrade pip
requirements.txt File
The requirements.txt allows you to specify which packages and versions should be installed. Typically, the requirements.txt file is located in the root of the project. The requirements.txt file can be generated with pip freeze command.
Example
pyOpenSSL==0.13.1
pyparsing==2.0.1
python-dateutil==1.5
pytz==2013.7
scipy==0.13.0b1
six==1.4.1
virtualenv==16.3.0
Version
pip --version
Operations
List Packages Installed in Environment
pip list
Display Details about a Package
pip show <package-name>
Install a Package
pip install <package-name>
The command always looks for the latest version of the package and installs it. It also looks for dependencies listed in the package metadata and installs those dependencies as well.