Mastering Python Looping Statements

What is a loop in Python?

• A loop in Python is a method for defining functions.

• A loop in Python is a control structure for repeated execution of code.

• A loop in Python is a data structure for storing lists.

• A loop in Python is a way to create variables.

Name the two main types of loops in Python.

• for loop, while loop

• foreach loop

• repeat until loop

• do while loop

How does a 'for' loop differ from a 'while' loop?

• A 'for' loop is used for conditional iterations, while a 'while' loop is used for fixed iterations.

• A 'for' loop is used for a known number of iterations, while a 'while' loop is used for an unknown number of iterations based on a condition.

• A 'for' loop iterates over collections, while a 'while' loop iterates based on a counter.

• A 'for' loop requires a condition, while a 'while' loop does not need any condition.

What is the purpose of the 'break' statement in a loop?

• To restart the loop from the beginning.

• To skip the current iteration.

• To exit a loop prematurely.

• To pause the loop temporarily.

Explain the use of the 'continue' statement in a loop.

• The 'continue' statement ends the loop and exits the function.

• The 'continue' statement pauses the loop until a condition is met.

• The 'continue' statement restarts the loop from the beginning of the current iteration.

• The 'continue' statement skips the current iteration of a loop and moves to the next iteration.

What will be the output of the following code: 'for i in range(5): print(i)'?

• 3.5

• 5

• -1

• 0 1 2 3 4

• 10

How can you iterate over a list using a 'for' loop?

• for item from my_list:

• for each item in my_list:

• for item in my_list:

• for item at my_list:

What is the output of 'sum(range(1, 10))' in Python?

• 50

• 40

• 30

• 45

Describe a scenario where a 'while' loop is preferred over a 'for' loop.

• Using a 'for' loop to read user input until a condition is met.

• Using a 'while' loop to read user input until the user types 'exit'.

• Using a 'while' loop to process a list of items with a known length.

• Using a 'for' loop to iterate over a fixed number of elements.

What is a nested loop and provide an example of its use in Python?

• Example of a nested loop in Python: for i in range(3): for j in range(2): print(f'i: {i}, j: {j}')

• for i in range(4): for j in range(4): if i == j: print(i)

• for i in range(5): print(i) for j in range(1): print(j)

• for i in range(2): for j in range(3): print(i + j)