The range() constructor generates numbers. This is very useful when creating new lists or when using for loops: it can be used for both.
In practice you rarely define lists yourself, you either get them from a database, the web or generate them using range().
Related course: Complete Python Bootcamp: Go from zero to hero in Python 3
Lets say you want to create a list of 100 numbers. Writing them out by hand would be very time consuming, instead use the range function:
x = list(range(100))
Python starts counting from zero. Now what if you want to count from 1 to 100?
x = list(range(1,101))
A third parameter defines the step size, by default its one. Range can be used in a for loop:
for i in range(1,11):
Try the exercises below
- Create a list of one thousand numbers
- Get the largest and smallest number from that list
- Create two lists, an even and odd one.