Python - Statement range
Introduction
range function is a general tool for looping.
It's used most often to generate indexes in a for loop.
Demo
print( list(range(5)), list(range(2, 5)), list(range(0, 10, 2)) )
Result
With one argument, range generates a list of integers from zero up to but not including the argument's value.
If you pass in two arguments, the first is taken as the lower bound.
An optional third argument can give a step. Python adds the step to each successive integer in the result.
The step defaults to 1.
Ranges can also be non-positive and non-ascending:
Demo
print( list(range(-5, 5)) ) print( list(range(5, -5, -1)) )
Result
Related Topics
- Using for loop with range
- Sequence Scans via while, range, for
- Sequence Shufflers: range and len
- Visit every second item in sequence
- Visit every second item in sequence via slice
- Add one to each item in list