PythonWhile Loops
Python Loops
Python has two primitive loop commands:
- while loops
- for loops
The while Loop
With thewhile loop we can execute a set of statements as long as a condition is true.
Note: remember to increment i, or else the loop will continue forever.
Thewhile loop requires relevant variables to be ready, in this example we need to define an indexing variable,i, which we set to 1.
The break Statement
With thebreak statement we can stop the loop even if the while condition is true:
The continue Statement
With thecontinue statement we can stop the current iteration, and continue with the next:
Example
Continue to the next iteration if i is 3:
i = 0
while i< 6:
i += 1
if i == 3:
continue
print(i)
Try it Yourself »while i< 6:
i += 1
if i == 3:
continue
print(i)
The else Statement
With theelse statement we can run a block of code once when the condition no longer is true:
Example
Print a message once the condition is false:
i = 1
while i< 6:
print(i)
i += 1
else:
print("i is no longer less than 6")
Try it Yourself »while i< 6:
print(i)
i += 1
else:
print("i is no longer less than 6")
