Python List index() Method

Returns the index of the first item with the specified value.

Syntax

Python

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list.index(value)

Parameters

Parameter	Description
`value`	Required. The value to search for within the list. This value can be of any type

Example

Python

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groceries = ['apples', 'oranges', 'paper towels']
print(f'Index of apples: {groceries.index("apples")}')
print(f'Index of oranges: {groceries.index("oranges")}')

Output

Index of apples: 0
Index of oranges: 1

Notes

If the value does not exist in the list, Python will throw a ValueError exception.

Example

Python

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groceries = ['apples', 'oranges', 'paper towels']
print(f'Index of bananas: {groceries.index("bananas")}')

Output

Traceback (most recent call last):
  File "Lists.py", line 2, in <module>
    print(f'Index of bananas: {groceries.index("bananas")}')
ValueError: 'bananas' is not in list