Python comes with two inbuilt keywords to interrupt loop iteration,breakandcontinue. Break Keyword In While loop The break keyword immediately terminates the while loop. Let's add a break statement to our existing code, x =1while(x<=3):print(x) x = x +1ifx ==3:breakelse:print("x is...
Usingfor loopsandwhile loopsin Python allows you to automate and efficiently repeat tasks. These loops are fundamental constructs in Python that enable you to iterate over sequences, such as lists, tuples, and strings, or to execute a block of code repeatedly based on a condition. However, t...
You can think of thewhileloop as a repeatingconditional statement. After anifstatement, the program continues to execute code, but in awhileloop, the program jumps back to the start of the while statement until the condition is False. As opposed tofor loopsthat execute a certain number of t...
You normally use a while loop when you don’t know beforehand how many iterations you need to complete a given operation. That’s why this loop is used to perform indefinite iterations.Here’s the general syntax for a while loop in Python:...
while If we wanted to mimic the behavior of our traditional C-styleforloop in Python, we could use awhileloop: colors=["red","green","blue","purple"]i=0whilei<len(colors):print(colors[i])i+=1 This involves the same 4 steps as theforloops in other languages (note that we’re ...
We have created a simple list of integers to use in our examples.Example 1: Looping Through a ListThe first example involves looping through a list of integers using a for loop. Here’s how it works:for num in numbers: print(num) # 1 # 2 # 3 # 4 # 5...
python rows=5foriinrange(1, rows +1):forjinrange(1, i +1):print(j, end=" ")print('') Output bash 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 Using python while loop While loop is also used to iterate over the range of numbers or a sequence. The while loop executes the block ...
In this example, we useprimerangefrom thesympylibrary to generate a list of prime numbers up to N and then print them. ReadWrite a Program to Find a Perfect Number in Python Print the First 10 Prime Numbers in Python Using a While Loop ...
Add a shift to this index to determine the index of the cipher character to use. Use % 26 to make sure the shift will wrap back to the start of the alphabet. Append the cipher character to the result string.After the loop finishes iterating over the text value, the result is returned...
Method 2: Using a while Loop Awhileloop can also be used to iterate through a list in Python, although it’s less common than theforloop. Thewhileloop continues as long as a specified condition is true. Example: cities = ["New York", "Los Angeles", "Chicago", "Houston"] ...