While

 

Python Loops

Python has two primitive loop commands:

• while loops
• for loops

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The while Loop

With the while loop we can execute a set of statements as long as a condition is true.

i = 1
while i < 6:
  print(i)
  i += 1

The while loop requires relevant variables to be ready, in this example we need to define an indexing variable, i, which we set to 1.

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The break Statement

With the break statement we can stop the loop even if the while condition is true:

i = 1
while i < 6:
  print(i)
  if i == 3:
    break
  i += 1

The continue Statement

With the continue statement we can stop the current iteration, and continue with the next:

i = 0
while i < 6:
  i += 1
  if i == 3:
    continue
  print(i)

The else Statement

With the else statement we can run a block of code once when the condition no longer is true:

i = 1
while i < 6:
  print(i)
  i += 1
else:
  print("i is no longer less than 6")