Mastering Python Fundamentals

What is type conversion in Python?

• Type conversion refers to the process of optimizing code performance.

• Type conversion in Python is the process of converting one data type to another.

• Type conversion is the process of changing variable names.

• Type conversion is a method for debugging errors in Python.

How do you write a single-line comment in Python?

• /* This is a comment */

• # This is a single-line comment

• // This is a comment

• # This is not a comment

Explain the input, processing, and output model in programming.

• Output is the data that is not used in the program.

• Processing is only about storing data.

• The input, processing, and output model describes the flow of data in a program: input (data received), processing (data manipulation), and output (result produced).

• Input is the final result of a program.

What is the syntax for an if-else statement in Python?

• if (condition) { do_something } else { do_something_else }

• if condition do_something else do_something_else

• if condition: do_something; else do_something_else

• if condition: do_something else: do_something_else

How do you create a nested if statement?

• if (condition1) { // code to execute }

• if (condition1) { if (condition2) // code to execute }

• if (condition1 && condition2) { // code to execute }

• if (condition1) { if (condition2) { // code to execute if both conditions are true } }

What is the purpose of the elif statement?

• The elif statement is used to check additional conditions in an if-else structure.

• The elif statement is used to define functions.

• The elif statement is used to create loops.

• The elif statement is used to terminate a program.

Describe the structure of a while loop in Python.

• for condition: # code to execute

• while condition: # code to execute

• repeat until condition: # code to execute

• do while condition: # code to execute

How does a for loop differ from a while loop?

• A for loop iterates a known number of times, while a while loop continues until a condition is false.

• A for loop requires a condition to be true, while a while loop does not need any conditions.

• A for loop runs indefinitely, while a while loop stops after a set number of iterations.

• A for loop is used for conditional statements, while a while loop is used for iteration.

What are nested loops and when would you use them?

• Nested loops can only be used with one-dimensional arrays.

• Nested loops are used to iterate over multi-dimensional data structures or to perform operations involving combinations of elements.

• Nested loops are a type of data structure.

• Nested loops are only used for sorting data.

What is the function of the break statement in loops?

• The break statement terminates the loop execution.

• The break statement skips the current iteration of the loop.

• The break statement pauses the loop execution.

• The break statement continues to the next loop iteration.