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Interpreted Language: The code you create in Python is executed line by line which makes
it easy to correct any errors. On execution, a Python code is immediately converted into an
intermediate form. This is known as byte code. The byte code makes it easier to execute or
run the code in future.
Dynamically Typed Language: Python is a dynamically typed language. This means that you
do not need to declare the type of variables in advance. For example, if you write a = 15, you
do not need to specify the variable a as an integer or string.
INSTALLING PYTHON
Follow these steps to download and install the Python software:
Step 1 Open the website http://www.python.org/downloads.
Step 2 Click on the Download Python 3.8.3 button.
Downloading Python
Step 3 Double-click on the downloaded software. You can either
look at the bottom of the screen or locate the software in the
Downloads folder of your computer. The Security Warning
dialog box appears.
Step 4 Click on Run button. The Python Setup window appears.
Step 5 Select the Add Python 3.8 to PATH checkbox.
Step 6 Click on Install Now button.
After a few seconds, Python will be successfully installed on your computer.
PROGRAMMING IN PYTHON
Python has two basic programming modes— Script Mode and Interactive Mode.
Working in Interactive Mode
Interactive Mode is a command line shell which gives immediate result for each command. In
Interactive mode, we type one command at a time. Python executes the given command and
gives the output.
Introduction to Programming Python 83

