10 Practical Tips for Using pip in Python

Since Python 3.4 (and 2.7.9), pip is bundled with the official installer, and it is also included in virtual environments created by virtualenv or pyvenv . If pip is missing, you can install it with py -m ensurepip --upgrade or by running the get-pip.py script downloaded from the official site.

After installation, typing pip in the command line displays the usage help. To upgrade pip itself, run pip install --upgrade pip or the shorter pip install -U pip .

To install a specific package, use pip install package-name . For a particular version, add the version specifier, e.g., pip install matplotlib==3.4.1 . Uninstall a package with pip uninstall package_name , and upgrade an existing package with pip install --upgrade package_name (or pip install -U package_name ).

Package information can be displayed using pip show -f requests , which lists metadata such as name, version, summary, homepage, author, license, location, dependencies, and installed files.

To see which installed packages have newer releases, run pip list -o . The command outputs a table of outdated packages, their current and latest versions, and the distribution type.

Compatibility issues can be checked with pip check (or pip check package_name for a specific package), which reports version conflicts among installed packages.

If download speed is a concern, you can specify a domestic mirror, for example: pip install -i https://pypi.tuna.tsinghua.edu.cn/simple package_name . Common Chinese mirrors include Tsinghua, Alibaba Cloud, USTC, HUST, Shandong University, and Douban.

To download a package without installing it, use pip download package_name -d "target_path" ; for example, pip download requests -d "." saves the package and its dependencies to the current directory.

For batch operations, generate a requirements.txt file with pip freeze > requirements.txt . Then install all listed packages in one step with pip install -r requirements.txt .