How to make an iterator in Python

To create an iterator object in Python, use the function iter()

iter(x)

The parameter x is an iterable object ( list, tuple, string, etc. ).

The iter() function creates an iterator object.

Examples

Example 1 ( list )

Create an iterator from a list using the iter() function

>>> x=iter([1,2,3,4,5])

The iterator object can be read via the next() function

>>> next(x)
1
>>> next(x)
2

Example 2 ( tuple )

Create an iterator from a tuple

>>> x=iter((1,2,3,4,5))

Read iterator elements using next() function

>>> next(x)
1
>>> next(x)
2

Example 3 ( string )

Create an iterator from a string

>>> x=iter("how")

Read iterator elements of a string using next() function

>>> next(x)
h
>>> next(x)
o
>>> next(x)
w