The enumerate() method adds counter to an iterable and returns it as an enumerate object.
Example
#!/usr/bin/python3
direction = ['East', 'South', 'West', 'North']
print(list(enumerate(direction)))
print(list(enumerate(direction, start = 1)) )
Output:
[(0, 'East'), (1, 'South'), (2, 'West'), (3, 'North')]
[(1, 'East'), (2, 'South'), (3, 'West'), (4, 'North')]
Syntax
enumerate(iterable, start = 0)
Parameters
| Name |
Description |
| iterable |
A sequence, an iterator, or objects that support iteration |
| start |
A number. Enumerate() starts counting from this number |
Return Value
It returns an enumerate object of the given iterable.
In this example we will show how to use enumerate function in Python.
Source Code
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
seasons = ['Spring', 'Summer', 'Fall', 'Winter']
print(list(enumerate(seasons)))
# Conventional traversal
for i in range (len(seasons)):
print( i ,seasons[i])
print()
# Traversing with the enumerate function
for index, item in enumerate(seasons):
print( index, item)
print()
# Numerate can also receive the second parameter, which is used to specify the starting value of the index, such as:
for index, item in enumerate(seasons,2):
print( index, item)
Output:
[(0, 'Spring'), (1, 'Summer'), (2, 'Fall'), (3, 'Winter')]
0 Spring
1 Summer
2 Fall
3 Winter
0 Spring
1 Summer
2 Fall
3 Winter
2 Spring
3 Summer
4 Fall
5 Winter
