Python Basics

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24 Questions

What is the purpose of a variable in a Python program?

To store or assign a value temporarily during computation

Which of the following data types in Python is an unordered collection of objects?

Set

What is the purpose of the type() function in Python?

To find the data type of a variable

What is the difference between a set and a frozenset in Python?

A set is mutable, while a frozenset is immutable

How do you import all names from a module in Python, except those beginning with an underscore?

Using the from module import * statement

What is the purpose of the None object in Python?

To define a null object

What is the purpose of the int() function in Python?

To convert a string to an integer

How do you define a complex number in Python?

Using the complex() function

What is the purpose of the and operator in Python?

To perform a logical AND operation

How do you convert a float to an integer in Python?

Using the int() function

What is the purpose of the dict data type in Python?

To store a collection of key-value pairs

What is the purpose of the Membership Operators in Python?

To check membership in a sequence or a set

What is the difference between a List and a Tuple in Python?

A List is mutable, while a Tuple is immutable

What is the purpose of the Bitwise Operators in Python?

To manipulate bits in a binary number

What is the purpose of the Input/Output Functions in Python?

To interact with the user

What is the default data type of the input received from the user using the input() function?

String

What is the purpose of the map() function in the given code snippet?

To take multiple inputs of the same data type

What is the output of the code snippet: num = int(input("Enter a number: ")); add = num + 1; print(add)?

It displays the entered number plus one

What is the purpose of the Modules in Python?

To reuse code and organize large programs

What is the purpose of the as keyword in the import statement?

To assign a new name to the imported module

What is the output of the code snippet: from arith import mul as multiply; print(multiply(5,10))?

50

What is the purpose of the print() function in Python?

To display output to the standard output devices

What is the data type of the variable a in the code snippet: a, b, c = map(int, input("Enter the Numbers : ").split())?

Integer

What is the function of the split() method in the code snippet: a, b, c = map(int, input("Enter the Numbers : ").split())?

To split the input into multiple variables

Study Notes

Python Basics

  • Python is an open source programming language.

Installation and Working with Python

  • Python can be installed and worked with using Integrated Development Environments (IDEs) such as PyCharm, Jupyter Notebook, and Google Colab.

Variables and Basic Data Types

  • A variable is a name given to a memory location that stores a value temporarily during computation.
  • Variables point to a particular value at a memory location via its address.
  • Data types in Python include:
    • Numeric (int, float, complex)
    • Strings
    • Lists
    • Tuples
    • Dictionary
    • Sets and Frozensets
    • Logical (AND, OR, TRUE, FALSE)
    • Null (None)

Data Types

  • Numeric data types:
    • int (positive and negative whole numbers)
    • float (decimal numbers)
    • complex (complex numbers)
  • String data type:
    • A sequence of characters
    • Case-sensitive
  • List data type:
    • A collection of items that can be of any data type
    • Ordered and changeable
  • Tuple data type:
    • A collection of items that cannot be changed
    • Ordered and unchangeable
  • Dictionary data type:
    • A collection of key-value pairs
    • Unordered and changeable
  • Sets and Frozensets data types:
    • An unordered collection of unique objects
    • Sets are changeable, while Frozensets are unchangeable
  • Logical data type:
    • Boolean values (True or False)
  • Null data type:
    • None (represents the absence of a value)

Operators

  • Assignment Operators
  • Arithmetic Operators
  • Comparison Operators
  • Membership Operators
  • Identity Operators
  • Bitwise operators
  • Precedence and Associativity

Functions and Modules

  • Modules:
    • A file that contains a collection of related functions and variables
    • Imported using the import statement
  • Functions:
    • A block of code that can be executed multiple times from different parts of a program
    • Can take arguments and return values

Input/Output Functions

  • input() function:
    • Used to get input from the user
    • Returns a string by default
    • Can be converted to other data types explicitly
  • print() function:
    • Used to display output to the standard output devices
    • Can take multiple arguments and separate them with spaces

This quiz covers the fundamentals of Python programming, including variables, data types, operators, functions, and modules, as well as basic I/O functions and IDEs.

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