find index of element in array python code example

Example 1: python find index by value

>>> ["foo", "bar", "baz"].index("bar")
1

Example 2: python find index of first matching element in a list

# Basic syntax:
list.index(element, start, end) 
# Where:
#	- Element is the item you're looking for in the list
# 	- Start is optional, and is the list index you want to start at
#	- End is option, and is the list index you want to stop searching at

# Note, Python is 0-indexed

# Example usage:
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 42, 9, 10]
my_list.index(42)
--> 8

Example 3: python index of item in list

list.index(element)

Example 4: find an index of an item in a list python

#Example List
list = ['apples', 'bannas', 'grapes']
#Use Known Entites In The List To Find The Index Of An Unknown Object
Index_Number_For_Bannas = list.index('apples')
#Print The Object
print(list[Index_Number_For_Bannas])

Example 5: get index of item in list

list.index(element, start, end)

Example 6: find index of elem list python

# Find index position of first occurrence of 'Ok' in the list 
indexPos = listOfElems.index('Ok')
 
print('First index of element "Ok" in the list : ', indexPos)