Breaking out of a Loop

Breaking out of a Loop

Table of Contents:

• Loops Revisited
• Using break
• Odd feature of python, Use else with loops

Loops Revisited

• for i in l - Repeat body for each item in list l.
• while condition - Repeat body till condition becomes False.
• In some situations, when a condition is met, we might want to exit the loop then and there.

eg:

Searching for a value in a list

• Scan for the list.
• When value is found, stop scanning.
• Return the position of value, if not found then return -1.

Using break

• break exists the loop when called.
• Skips looping elements after break is called.

Odd feature of python, Use else with loops

• else can be attached for a while or even a for.

for i in l:
    ...
else:
    ...

while Condition:
    ...
else:
    ...