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PYTHON ITERATIVE STATEMENTS

Iteration means repeating a set of instructions again and again. It is a flow of control that allows
a part of the code to run multiple times without writing it again each time. In many programs, we
often need to repeat certain actions. Instead of copying the same code many times, we use loops
to do it automatically.

Using loops helps save time, reduce mistakes and make the code shorter and cleaner.
Python provides two main types of loops: the for loop, which repeats a block of code for each item

in a sequence or for a specific number of iterations and the while loop, which repeats a block of
code as long as a condition is true.
range() function

The range() function is a built-in function in Python that generates a sequence of numbers.

The range() function is most commonly used with the for loop to repeat tasks a specific number
of times.

Syntax of the range() function:

range(start, stop, step)
where,

start: This is the optional value where the sequence begins. If you don’t specify it, Python will
automatically start from 0.
For example, range(5) is treated as range(0, 5) and generates: [0, 1, 2, 3, 4].

stop: This is the mandatory value at which the sequence ends, but it is not included in the
result.

For example, range(2, 6) gives: [2, 3, 4, 5] (6 is excluded).
step: This optional value defines how much the value should increase or decrease each time.

The default step value is 1, which means the numbers go up one at a time. You can also use a
negative step value to create a descending sequence.

For example: range(10, 2, -2) gives [10, 8, 6, 4].
range(2, 8, 3) gives [2, 5].

PURE Python has no limit on variable name length, but line lengths should be kept under 79
FACT characters for better readability.

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