Control the flow of your Python program with loops and conditionals from "summary" of Python For Dummies by Stef Maruch,Aahz Maruch
Loops and conditionals are essential tools for controlling the flow of your Python program. Loops allow you to repeat a block of code multiple times, while conditionals enable you to make decisions based on certain conditions. By using loops and conditionals effectively, you can create dynamic and flexible programs that respond to different situations. There are two main types of loops in Python: `for` loops and `while` loops. A `for` loop iterates over a sequence of elements, such as a list or a range of numbers. You can use a `for` loop to perform a certain action for each element in the sequence. On the other hand, a `while` loop continues to execute as long as a certain condition is true. This type of loop is useful when you don't know in advance how many times you need to repeat a block of code. Conditionals, on the other hand, allow you to make decisions in your program based on specific conditions. The most common type of conditional in Python is the `if` statement, which evaluates a condition and executes a block of code if the condition is true. You can also use `elif` and `else` statements to provide alternative paths for your program to follow based on different conditions. By combining loops and conditionals, you can create complex programs that respond to changing circumstances. For example, you can use a `while` loop to repeatedly ask the user for input until they provide a valid response. Inside the loop, you can use `if` statements to check the validity of the input and take appropriate actions based on the user's response.- Loops and conditionals are powerful tools for controlling the flow of your Python program. By mastering these concepts, you can write more efficient and flexible code that can adapt to different situations. Whether you need to repeat a block of code multiple times or make decisions based on specific conditions, loops and conditionals are essential features of Python programming.
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