installing a package
pip install xxxx
what is a modules
module is just py.script
from mymodule import my_func
what is a package
package is a bunch of modules
package needs to put a “__init__.py” file inside the folder
from mypackage import mymodule
at the bottom of a .py script
if \_\_name\_\_ == "\_\_main\_\_":
function 1()
function 2()2 ways on importing built-in module