index list python code example

Example 1: get index of list python

list.index(element)

Example 2: python find index by value

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

Example 3: python index of element in list

# alphabets list
alphabets = ['a', 'e', 'i', 'o', 'g', 'l', 'i', 'u']

# index of 'i' in alphabets
index = alphabets.index('i')   # 2
print('The index of i:', index)

# 'i' after the 4th index is searched
index = alphabets.index('i', 4)   # 6
print('The index of i:', index)

# 'i' between 3rd and 5th index is searched
index = alphabets.index('i', 3, 5)   # Error!
print('The index of i:', index)

Example 4: python get element from list

my_list = ["pizza", "soda", "muffins"]

my_list[0] # outputs "pizza"
my_list[-1] # outputs the last element of the list which is "muffins"
my_list[:] # outputs the whole list
my_list[:-1] # outputs the whole list except its last element

# you can also access a string's letter like this

Example 5: python index method

my_string = "Hello World!"

my_string.index("l") # outputs 2
# this method only outputs the index of the first "l" value in the string/list

Example 6: 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])