One Pager Cheat Sheet

• In this lesson, we will learn about loops and iterations in programming, to automate the process of applying operations to collections of elements.
• Iteration and iterables such as lists and strings are key concepts in programming which can be implemented through the use of loops.
• Loops are a programming structure used for iteration that are usually implemented with for and while loops in different programming languages.
• For loops are used to iterate over a sequence of elements, either using the range keyword to specify the number of repetitions or directly accessing elements in an iterable.
• While loops are used to iterate over a sequence of elements until a certain condition is met, typically by initializing a variable before the start of the loop and using unary operators to increment or decrement the value of the variable.
• The for loop will iterate through the list fruits (which contains 6 elements) and print each element per iteration, resulting in the loop being executed 6 times.
• The code will generate an error because range() expects an integer as the argument, not a list.
• One must be careful to use the break and continue statements correctly to avoid an Infinite loop, as forcing an execution stop is the only way to terminate it.
• The code prints all the letters in "Loops" except for 'o', which was skipped due to the continue statement in the while loop, leaving 'p' as the last character.
• The while loop will continue indefinitely as long as the condition a <= 5 is True.
• Iterations are an important concept in programming that helps us reduce code quantity and promote code reusability and modularity by allowing us to specify the number of times a code block needs to be repeated or conditions that specify its reuse.