Python Programming Mastery

What is the difference between a variable and a data type in Python?

• A variable is a type of value, while a data type is a name that refers to a value.

• A variable and a data type are the same thing in Python.

• A variable can hold multiple values, while a data type can only hold one value.

• A variable is a name that refers to a value, while a data type is the type of value that a variable can hold.

Explain the use of 'if' statement in Python with an example.

• Example: x = 10 if x < 5: print('x is less than 5')

• Example: x = 10 if x > 5: print('x is greater than 5')

• Example: x = 10 if x == 5: print('x is equal to 5')

• Example: x = 10 if x != 5: print('x is not equal to 5')

What are the advantages of using functions in Python?

• Using functions in Python does not improve code reusability

• The advantages of using functions in Python include code reusability, improved readability, and making the code modular and easier to maintain.

• Functions in Python make the code less readable and harder to maintain

• Functions in Python make the code less modular and harder to maintain

What is the difference between a list and a tuple in Python?

• A list can only contain integers, while a tuple can contain any data type

• The main difference is that a list is mutable, meaning it can be changed after it is created, while a tuple is immutable and cannot be changed after it is created.

• A list can have duplicate elements, while a tuple cannot

• A list is ordered, while a tuple is unordered

What is the purpose of the 'for' loop in Python?

• The purpose of the 'for' loop in Python is to iterate over a sequence and perform a set of actions for each item in the sequence.

• The purpose of the 'for' loop in Python is to only iterate over strings

• The purpose of the 'for' loop in Python is to skip over a sequence of items

• The purpose of the 'for' loop in Python is to execute a specific number of times

How do you define a function in Python?

• You define a function in Python using the 'func' keyword followed by the function name and parentheses, then a colon.

• You define a function in Python using the 'define' keyword followed by the function name and parentheses, then a colon.

• You define a function in Python using the 'function' keyword followed by the function name and parentheses, then a colon.

• You define a function in Python using the 'def' keyword followed by the function name and parentheses, then a colon.

Explain the concept of modules in Python.

• Modules in Python are only used for creating user interfaces, not for organizing code

• Modules in Python are used to organize and reuse code, making it easier to maintain and understand large programs.

• Modules in Python can only be used once in a program and cannot be reused

• Modules in Python are only used for storing data, not for organizing code

What are the different data types available in Python?

• arr

• boolstr

• map

• int, float, str, bool, list, tuple, dict, set

• floatstr

How do you create a dictionary in Python?

• Use curly braces {} and specify key-value pairs separated by a colon

• Use square brackets [] and specify key-value pairs separated by a colon

• Use parentheses () and specify key-value pairs separated by a comma

• Use angle brackets <> and specify key-value pairs separated by a semicolon

What is the use of 'while' loop in Python?

• The 'while' loop in Python is used to repeatedly execute a block of code as long as a specified condition is true.

• The 'while' loop in Python is used to execute a block of code as long as a specified condition is false

• The 'while' loop in Python is used to execute a block of code only once

• The 'while' loop in Python is used to skip a block of code if a specified condition is true