How to use "import" statement to load Python modules?

If you created a Python module file called "firstModule.py" as described in the previous tutorial, you can load it into your Python execution session using the "import" statement:

1. Make sure the module file is in the current directory:

\fyicenter>dir firstModule.py
    147 firstModule.py

2. Start the Python in interactive mode:

\fyicenter>python
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) [MSC v.1900 32 bit (Intel)]
 on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

3. Load the module file. Note that the Python code in the module file will be executed once when you load it for the first time. If you load it again, it will not be executed any more.

>>> import firstModule
Loading firstModule.py...
>>> import firstModule

4. Access module properties and methods:

>>> firstModule.__doc__
'My first Python module'
>>> firstModule.1.00
'1.0'
>>> firstModule.sayHello()
Greetings from first module!

5. Using module classes:

>>> firstModule.firstClass.sayHello()
Greetings from first class!
>>> x = firstModule.firstClass()
>>> x.1.00
'1.1'

⇒ Modules Are Objects Too

⇐ What Is Module

⇑ Defining and Using Python Code Modules

⇑⇑ Python Tutorials