index item list python code example

Example 1: 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 2: python index of item in list

list.index(element)

Example 3: python index list in list

>>> list1 = [[10,13,17],[3,5,1],[13,11,12]]
>>> list1[0][2]
17