The range command takes one, two or three arguments.
For one argument, the argument must be a non-negative integer n.
range will then return the list [0,1,…,n−1]
Input:
range(5)
Output:
[0,1,2,3,4]
For two arguments, the arguments must be two numbers a and b,
with a ≤ b. range will then return the list
[a, a+1,…] up to, but not including, b.
Input:
range(4,10)
Output:
[4,5,6,7,8,9]
For three arguments, the arguments must be three numbers a, b
and a non-zero p. range will then return the list
[a, a+p,a+2p,…] up to, but not including, b.
If p > 0, then a ≤ b; if p < 0, then a ≥ b.
Input:
range(4,13,2)
Output:
[4,6,8,10,12]
Input:
range(10,4,-1)
Output:
[10,9,8,7,6,5]
The range command can be used to create a list of values
f(k), where k is an integer satisfying a certain condition.
You can list the values of an expression in a variable which
goes over a range defined by range.
Input:
[k^2 + k for k in range(10)]
Output:
[0,2,6,12,20,30,42,56,72,90]
YOu can list the values of an expression in a variable which
goes over a range defined by range and which satisfies a
given condition.
Input: