Conditional Loop Control in Python

Code Analysis

The provided code snippet runs a loop through numbers from 0 to 9, performing different actions based on the value of each number. The language used is Python.

Code Explanation

Code Snippet

for number in range(10):
    if number == 5:
        break  # exit loop when number is 5
    if number % 2 == 0:
        continue  # skip even numbers
    print(number)

Breakdown and Detailed Explanation

1. Loop Initialization:

   • The for loop commences with the statement for number in range(10):.
   • range(10) generates a sequence of numbers from 0 to 9.

   range(10)  # Generates: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

2. Condition to Exit the Loop:

   • The statement if number == 5: checks if the current number is 5.
   • If true, break stops the loop execution immediately.

   if number == 5:
       break

   • Hence, when number reaches 5, the loop terminates.

3. Skipping Even Numbers:

   • The statement if number % 2 == 0: checks if the current number is even.
   • If true, continue skips the subsequent code (print(number)) and moves to the next iteration of the loop.

   if number % 2 == 0:
       continue

4. Printing Odd Numbers:

   • If neither of the above conditions is met, the current number is printed.

   print(number)

Execution Flow

• 0: Even, skip (due to continue).
• 1: Print (odd number).
• 2: Even, skip.
• 3: Print (odd number).
• 4: Even, skip.
• 5: Exit loop (due to break).

Output

The output of this code snippet will be:

1
3

Key Programming Concepts

1. For Loop: Iterates over a sequence of numbers generated by range(10).

2. Break Statement: Terminates the loop immediately when a specified condition (number == 5) is met.

3. Continue Statement: Skips the rest of the current loop iteration and proceeds with the next iteration for even numbers (number % 2 == 0).

Additional Examples

Example 1: Loop without Break

for number in range(10):
    if number % 2 == 0:
        continue
    print(number)

Output:

1
3
5
7
9

Example 2: Loop with Condition to Break at 7

for number in range(10):
    if number == 7:
        break
    if number % 2 != 0:
        print(number)

Output:

1
3
5

Summary

The provided code snippet demonstrates how to conditionally exit a loop and skip certain iterations in Python. Utilizing break and continue statements, the code effectively manages the loop's flow, selectively printing odd numbers from 0 to 4 while terminating the loop when encountering the number 5.