Page 2: Advanced Python Concepts and Code Examples
This page delves deeper into Python programming concepts, focusing on loops and conditional statements. It provides practical examples of count-controlled loops, selection statements, and conditional looping in Python.
The page begins by explaining count-controlled loops, also known as definite iteration:
Definition: Count-controlled loops are when a set of instructions is repeated a specific number of times.
Example: A for loop example is provided:
for number in range(0, 10):
print(number)
The page then moves on to selection examples, demonstrating the use of if-elif-else statements:
Example: A speed check program is shown:
speed = int(input("Enter driver's speed: "))
if speed >= 75:
print("Issue fine")
elif speed > 70:
print("Warning")
elif speed == 70:
print("Perfect speed")
else:
print("No action")
The guide also covers conditional looping, providing two examples:
- A loop that asks for the capital of France until the correct answer is given.
- A loop that keeps asking for a number while it's bigger than or equal to 100.
Highlight: The page emphasizes the importance of initializing variables before using them in loops.
Finally, the page explores various forms of count-controlled iteration, demonstrating:
- How to print a set number of stars
- How to print the loop variable
- Using start and stop values in range()
- Using intervals in range()
- Counting backwards
- Using user input to determine the loop range
Example: A program that calculates squares up to a user-specified number:
num = int(input("Up to what number do you want the square of: "))
for counter in range(1, num+1):
print(counter, "squared is", counter*counter)
This comprehensive guide provides a solid foundation for understanding Python data types and functions, as well as sequencing, selection, and iteration in Python, making it an invaluable resource for beginners learning Python programming.
