Python

Important Statements

Quick syntax reference for importing modules and using pip.

Importing Modules

Bring modules (code files) into your script.

• Entire Module:

  import module_name
  # Use: module_name.object_name
  

• With Alias:

  import module_name as alias
  # Use: alias.object_name
  

• Specific Object(s):

  from module_name import object_name
  # Use: object_name
  from module_name import object1, object2
  # Use: object1, object2
  

• All Objects (Use with caution):

  from module_name import *
  # Use: object_name (directly)
  

Using pip

Install and manage third-party packages from PyPI. Use in your terminal/command prompt.

• Install Package:

  pip install package_name
  

• Install Specific Version:

  pip install package_name==1.2.3
  

• Upgrade Package:

  pip install --upgrade package_name
  

• Uninstall Package:

  pip uninstall package_name
  

• List Installed Packages:

  pip list
  

• Create requirements.txt:

  pip freeze > requirements.txt
  

• Install from requirements.txt:

  pip install -r requirements.txt