Update cheatsheets

pip

@@ -0,0 +1,38 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pip
+
+> Python package manager.
+> Some subcommands such as `pip install` have their own usage documentation.
+> More information: <https://pip.pypa.io>.
+
+- Install a package (see `pip install` for more install examples):
+
+`pip install {{package}}`
+
+- Install a package to the user's directory instead of the system-wide default location:
+
+`pip install --user {{package}}`
+
+- Upgrade a package:
+
+`pip install --upgrade {{package}}`
+
+- Uninstall a package:
+
+`pip uninstall {{package}}`
+
+- Save installed packages to file:
+
+`pip freeze > {{requirements.txt}}`
+
+- Show installed package info:
+
+`pip show {{package}}`
+
+- Install packages from a file:
+
+`pip install --requirement {{requirements.txt}}`