[Python] Importing Modules

less than 1 minute read

How Python import modules

In High Level
- Checks the sys.modules cache to see if the module has already been imported
- If not, creates a new module object (types.ModuleType)
- Loads the source code from file
- Adds an entry to sys.modules with name as key and the newly created
- Compiles and executes the source code

# where python is installed
sys.prefix

# Where the python environment is
sys.exec_prefix

# where python look for imports
sys.path

# dictionary of modules in the main(current) modules
sys.modules