CBSE Class 11 Computer Science Chapter 8: Getting Started with Python NCERT Solutions

Reviewed by · Updated on

NCERT Solutions PDF Class 11 PDF

CBSE Class 11 Computer Science Chapter 8, 'Getting Started with Python,' introduces the essential building blocks of Python programming. This chapter focuses on two fundamental execution modes: Interactive Mode, ideal for quick testing and exploration, and Script Mode, used for writing and running complete programs. Students will gain a solid understanding of Python's core data types, such as integers, floats, strings, lists, and tuples, learning how to represent and manipulate different kinds of information. The solutions also clarify the concepts of variable declaration and assignment, explaining how Python manages data in memory. These explanations are crafted to provide a clear and accessible learning experience, ensuring students can confidently grasp these foundational Python concepts and build a strong base for their future programming endeavors.

Home

Quick info

BoardCBSE
ClassClass 11
SubjectComputer Science
Session2026
LanguageEnglish
TypeNCERT Solutions
ChapterChapter 8

Chapter summary

Chapter 8, 'Getting Started with Python,' introduces the basic building blocks of Python programming. The NCERT Solutions focus on explaining the interactive and script modes of Python, detailing the differences and applications of each. It also covers essential standard data types like numbers, strings, lists, and tuples, along with the concept of immutability. The solutions clarify Python's approach to variable declaration and simultaneous assignment, providing a solid foundation for new programmers.

Learning outcomes

  • Understand the two primary modes of Python execution: Interactive and Script Mode.
  • Identify and differentiate between standard Python data types such as numbers, strings, lists, and tuples.
  • Explain the concept of immutability in Python data types.
  • Describe how Python variables are declared and assigned values.
  • Recognize the file extension for Python programs.

Topics covered

Paper topics

  • Python Modes
  • Interactive Mode
  • Script Mode
  • Standard Data Types
  • Numbers
  • Strings
  • Lists
  • Tuples
  • Immutability
  • Python Variables
  • Variable Assignment
  • File Extensions

Important topics

  • Python Modes (Interactive vs. Script)
  • Standard Data Types (Numbers, Strings, Lists, Tuples)
  • Mutability of Data Types
  • Variable Declaration and Assignment
  • Python File Extension

PDF preview

Read page by page below. PDF is streamed from the official NCERT website — no download button on this page.

Loading document …
Page of
Loading page …

Questions and Solutions

Question 1

What are the two modes in Python?
Solution:

Python operates in two primary modes:

  1. Interactive Mode Programming: In this mode, you can type Python commands directly into the interpreter and receive immediate output. This is useful for testing small code snippets or exploring Python's features quickly.
  2. Script Mode Programming: In this mode, you write a sequence of Python commands in a file (with a .py extension) and then execute the entire file. The interpreter runs the script from beginning to end.

Question 2

Write any two Standard Data Types in Python.
Solution:

Two standard data types in Python are:

  1. List: An ordered, mutable collection of items. Lists are defined using square brackets `[]`.
  2. String: An ordered sequence of characters, used to represent text. Strings are defined using single quotes `''` or double quotes `""`.

Question 3

Is List a standard data type?
Solution:

Yes, a List is considered one of Python's standard, built-in data types. It is a versatile, ordered, and mutable sequence used to store collections of items.

Question 4

Write the kind of Python's dictionary?
Solution:

Python's dictionaries are a kind of hash table type. They store data in key-value pairs, allowing for efficient retrieval of values based on their associated keys.

Question 5

What is the extension of Python language?
Solution:

All Python files, which contain Python code, have the file extension .py.

Question 6

Which mode of Python invoking the interpreter without passing a script file as a parameter?
Solution:

The Interactive Mode Programming is the mode where you invoke the Python interpreter without providing a script file as a parameter. This allows you to type commands directly and see their results immediately.

Question 7

Which mode of Python invoking the interpreter with a script parameter begins execution of the script and continues until the script is finished?
Solution:

The Script Mode Programming is the mode where you invoke the Python interpreter with a script file as a parameter. The interpreter then begins executing the commands within that script file until it is completed.

Question 8

In which mode of Python, the interpreter is no longer active?
Solution:

In Script Mode Programming, once the script has finished executing, the interpreter is no longer active for that specific execution. In contrast, Interactive Mode remains active until explicitly exited.

Question 9

Do Python variables have to be explicitly declared to reserve memory space?
Solution:

No, Python variables do not have to be explicitly declared to reserve memory space. Python is a dynamically typed language. A variable is created and memory is allocated the moment you first assign a value to it.

Question 10

Does Python allows you to assign a single value to several variables simultaneously?
Solution:

Yes, Python allows you to assign a single value to several variables simultaneously. This can be done by chaining assignment operators or by assigning a tuple of values to a tuple of variables.

Example: x = y = z = 10 assigns the value 10 to variables x, y, and z.

Question 11

Give a example of immutable data type.
Solution:

An example of an immutable data type in Python is a Tuple. Once a tuple is created, its elements cannot be modified, added, or removed.

Question 12

Which type of values can be store in Number data types.
Solution:

Python's Number data types can store numeric values. These include integers (whole numbers), floating-point numbers (numbers with a decimal point), and complex numbers.

Question 13

Does Python allow for only double quotes?
Solution:

No, Python does not allow for only double quotes. Python allows strings to be defined using either pairs of single quotes ('...') or pairs of double quotes ("..."). Both are treated identically.

Question 14

Write the name of most versatile Python's compound data types.
Solution:

The most versatile of Python's compound data types is the List. Lists are ordered, mutable sequences that can hold items of different data types, making them highly flexible for various programming tasks.

Question 15

Which data type consists of a number of values separated by commas?
Solution:

A Tuple is a data type that consists of a number of values separated by commas. Tuples are ordered, immutable sequences, typically defined using parentheses ().

Common mistakes

  • Confusing the characteristics of Interactive Mode and Script Mode.
  • Misunderstanding the mutability of different data types (e.g., lists vs. tuples).
  • Incorrectly assuming explicit variable declaration is always required in Python.
  • Not knowing the standard file extension for Python scripts.

Revision tips

  • Practice switching between Python's Interactive and Script modes to understand their practical differences.
  • Create small Python programs to experiment with different data types and observe their behavior.
  • Review the definitions of mutable and immutable data types to avoid confusion.
  • Pay close attention to the syntax for assigning values to multiple variables simultaneously.

Practice MCQs

Q1. Which Python mode allows immediate execution of commands and viewing results?

Q2. What is the standard file extension for Python programs?

Q3. Which of the following is an example of an immutable data type in Python?

Q4. In which Python mode does the interpreter execute a script file from start to finish?

Q5. Does Python require explicit declaration of variables before use?

Frequently asked questions

What are the two main modes of running Python code?

The two main modes are Interactive Mode, where commands are executed immediately, and Script Mode, where code is written in a file and executed sequentially.

What is the difference between Interactive Mode and Script Mode in Python?

In Interactive Mode, you type commands and get immediate feedback, useful for testing. In Script Mode, you write a program in a.py file and run it, which is used for larger applications.

Can you list some standard data types in Python?

Yes, some standard data types include Numbers (integers, floats), Strings, Lists, and Tuples.

What does it mean for a data type to be immutable in Python?

An immutable data type means that its value cannot be changed after it has been created. Tuples are an example of immutable data types.

Do I need to declare the type of a variable before using it in Python?

No, Python is dynamically typed. You do not need to explicitly declare a variable's type; it is determined when a value is assigned to it.

What is the standard file extension for Python files?

The standard file extension for Python files is '.py'.

Important links

Content reviewed by the NCERT Help team. Editorial Team and update policy

NCERT Solutions PDF PDF on NCERT Help. URL unchanged for search indexing.