#LMGTFY
In this example, I have created an array of numbers called 'foobar', and while the variable 'sum' is less than 20, I will have the program continue to loop back and add the next number in the array sequence.
#!usr/bin/env
foobar = [1, 4, 7, 2, 9, 11, 0, 6, 5, 4, 16, 3]
sum = 0
iteration = 0
while(sum < 20):
sum += foobar[iteration]
iteration += 1
print("Finished!")
A program can be looped in Python by wrapping the entire program in a for or while loop. If you wish to loop the program a finite amount of times, it can be done like so (x = the amount of times you want it to loop, this can be a number or variable storing a number): for i in range(0,x): [code] If you wish to loop the program infinitely, you can use a simple while loop: while True: [code]
A Do-While loop looks like this: do { loop body } while (condition); and a While loop looks like this: while (condition) { loop body } The main difference is that the loop body is always run once in the Do-While loop, then the condition is checked to see if the loop should keep running. In a While loop, the condition is checked first, and it will not run the loop body at all if the condition is false.
A Loop is a programming language construct that instructs the processor to repeat a sequence of operations a number of times until a specific condition is reached. There are different types of loops. They are: * for loop * while loop * do while loop
We need a for loop because the while and do-while loops do not make use of a control variable. Although you can implement a counter inside a while or do-while loop, the use of a control variable is not as self-evident as it is in a for loop. Aside from the use of a control variable, a for loop is largely the same as a while loop. However, it is quite different to a do-while loop, which always executes at least one iteration of the loop before evaluating the conditional expression. In a for and while loop, the conditional expression is always evaluated before entering the loop, which may result in the loop not executing at all.
a = 0while a < 10 :a += 1print (a)Write the above simple script in a text editor (I use nano). Save as loop.py in home folder. To run, open a terminal and at the prompt, write: python loop.pyResult:rodney@downstairs:~$ python loop.py12345678910
A program can be looped in Python by wrapping the entire program in a for or while loop. If you wish to loop the program a finite amount of times, it can be done like so (x = the amount of times you want it to loop, this can be a number or variable storing a number): for i in range(0,x): [code] If you wish to loop the program infinitely, you can use a simple while loop: while True: [code]
An infinite loop might look something like: while 1==1: print("Infinite loop") as 1 is ALWAYS equal to 1.
In Python, you can create loops using different constructs, such as the for loop and the while loop. These loops allow you to repeatedly execute a block of code until a specific condition is met. Here's how you can create loops in Python: for loop: A for loop is used when you want to iterate over a sequence of elements such as a list, tuple, or string. It executes a block of code for each item in the sequence. for item in sequence: # Code block to be executed Here's an example that prints the numbers from 1 to 5 using a for loop: for num in range(1, 6): print(num) 2 while loop: A while loop is used when you want to repeat a block of code as long as a certain condition is true. It keeps executing the code block until the condition becomes false. while condition: # Code block to be executed Here's an example that prints the numbers from 1 to 5 using a while loop: num = 1 while num
A Python loop is something that will always happen or continue to happen until the condition isn't met. So for example:while 1==1:print("Infinite loop")would be an infinite loop, as 1 will ALWAYS be equal to 1.
A nested loop is a (inner) loop that appears in the loop body of another (outer) loop. The inner or outer loop can be any type: while, do while, or for. For example, the inner loop can be a while loop while an outer loop can be a for loop.
They both loop
#declare value of product product = 0 #while loop in python #while (test condition) : # statements (s) while product < 100: #prompt for a user to enter a number n1 = input ("Enter a number: ") #multiply n1 times 10 product = n1 * 10
A Do-While loop looks like this: do { loop body } while (condition); and a While loop looks like this: while (condition) { loop body } The main difference is that the loop body is always run once in the Do-While loop, then the condition is checked to see if the loop should keep running. In a While loop, the condition is checked first, and it will not run the loop body at all if the condition is false.
Is loop
A Loop is a programming language construct that instructs the processor to repeat a sequence of operations a number of times until a specific condition is reached. There are different types of loops. They are: * for loop * while loop * do while loop
There are 3 type of loop 1 is for loop 2 is loop while 3 is loop untile
We need a for loop because the while and do-while loops do not make use of a control variable. Although you can implement a counter inside a while or do-while loop, the use of a control variable is not as self-evident as it is in a for loop. Aside from the use of a control variable, a for loop is largely the same as a while loop. However, it is quite different to a do-while loop, which always executes at least one iteration of the loop before evaluating the conditional expression. In a for and while loop, the conditional expression is always evaluated before entering the loop, which may result in the loop not executing at all.