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An Example of a. forLoop. Note an important difference between the while loop and the for loop. In the while loop, the index variable iis assigned 0, 1, and so on. In the for loop, the element variable is assigned stateName[0], stateName[1], and so on. stateName = "Virginia".
I have a while loop in python. condition1=False. condition1=False. val = -1. while condition1==False and condition2==False and val==-1: val,something1,something2 = getstuff() if something1==10: condition1 = True. if something2==20:
The while loop is the most simple of the loops in Python. The syntax for the loop is as follows: while <Boolean expression>: stmt1 stmt2 ... stmtn stmtA The manner in which this gets executed is as follows: 1) Evaluate the Boolean expression. 2) If it’s true a) Go ahead and execute stmt1 through stmtn, in order. b) Go back to step 1.
Whether or not a part of a program repeats is determined by a loop control (typically the control is just a variable). Initialize the control to the starting value. Executing the body of the loop (the part to be repeated) Update the value of the control.
5 lut 2024 · In this article, we will examine 8 examples to help you obtain a comprehensive understanding of while loops in Python. Example 1: Basic Python While Loop. Let’s go over a simple Python while loop example to understand its structure and functionality: >>> i = 0 >>> while i . 5: >>> print(i) >>> i += 1 Result: 0 1 2 3 4
in case of for-loop, the control variable is bound to the next item of the sequence, in case of while-loop, the test is re-evaluated, and the next iteration is started. Very often, it is convenient to use continue to filter out the iterations for which the loop should not be executed. Examples: break and continue
The While Loop. This type of loop can be used if it’s not known in advance how many times that the loop will repeat (most powerful type of loop, any other type of loop can be simulated with a while loop). It can repeat so long as some arbitrary condition holds true. while (Boolean expression): body.
