Range function

range() is a function that generates a series of numbers within a certain range.

# Same loop as before, using range()
for i in range(5,0,-1):
	print(i)
print("Blastoff!")

5
4
3
2
1
Blastoff!

For longer lists of numbers, range is easier than typing the whole thing out.

The syntax for the range function is below.

range(start, stop, step)

start specifies the first value of the range.
stop specifies the stopping point.
- The stop value is not included in the range, so range(1,10) will only go up to 9.
step specifies how much to count by each time. range(2,10, 2) produces 2, 4, 6, 8.
- The default value is 1, which means that if you leave step out, range will count by 1.

Here’s some examples using range:

# Print the numbers 1-10
for n in range(1,11): # 11 is not included!
	print(n)

# Print the numbers 5, 10, 15, 20... 100, counting by 5s
for number in range(5, 101, 5):
	print(number)

# Print the numbers counting down from 5 to 1
for i in range(5,0,-1):
	print(i)
print("Blastoff!")

Programming 1

Range function

Range function

Range Practice