Mastery 25. Creation and use of ranges in Python

Range is a very useful built in function in Python. It allows us to create lists with arithmetic progressions.

The syntax is the following:

     range (start, stop, step)

Where the arguments have to be integer numbers. We can omit the “start” argument and Python sets it to 0 by default. We can also omit the “step” argument and it will be set to 1 by default.

It is also important to remark that the “stop” argument is never taken into account as part of the generated list.

Here are some examples:

>>range(5)

[0,1,2,3,4]

>>range(1,7)

[1,2,3,4,5,6]

>>range(20,100,10)

[20,30,40,50,60,70,80,90]

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