Range()

Definition

range() is a built-in Python function used to generate a sequence of numbers. It is commonly used in for loops to iterate over a series of values.

5 Must Know Facts For Your Next Test

1. The range() function can take one, two, or three arguments.
2. range(stop) generates numbers from 0 up to, but not including, stop.
3. range(start, stop) generates numbers from start up to, but not including, stop.
4. range(start, stop, step) generates numbers from start up to, but not including, stop, incrementing by step.
5. The range() function returns an immutable sequence object of type 'range'.

Review Questions

• How does the range() function differ when provided with one argument versus two?
• What will be the output of list(range(1, 10, 2))?
• Why might you use range() in a for loop?

Related terms

for loop: A control flow statement that repeatedly executes a block of code for each item in a sequence or iterable.

iterable: An object capable of returning its members one at a time. Examples include lists, tuples, and strings.

sequence: An ordered collection of items indexed by integers. Common sequences include strings, lists, and tuples.