Table of Contents
The index() method returns the index of the specified element in the tuple.
The syntax of the tuple index()
method is:
tuple.index(element, start, end)
1. Tuple index() parameters
The tuple index()
method can take a maximum of three arguments:
- element – the element to be searched
- start (optional) – start searching from this index
- end (optional) – search the element up to this index
2. Return Value from Tuple index()
- The
index()
method returns the index of the given element in the tuple. - If the element is not found, a
ValueError
exception is raised.
Note: The index()
method only returns the first occurrence of the matching element.
3. Example 1: Find the index of the element
# vowels tuple vowels = ('a', 'e', 'i', 'o', 'i', 'u') # index of 'e' in vowels index = vowels.index('e') print('The index of e:', index) # element 'i' is searched # index of the first 'i' is returned index = vowels.index('i') print('The index of i:', index)
Output
The index of e: 1 The index of e: 2
4. Example 2: Index of the Element not Present in the Tuple
# vowels tuple vowels = ('a', 'e', 'i', 'o', 'u') # index of'p' is vowels index = vowels.index('p') print('The index of p:', index)
Output
ValueError: tuple.index(x): x not in tuple
5. Example 3: Working of index() With Start and End Parameters
# alphabets tuple alphabets = ('a', 'e', 'i', 'o', 'g', 'l', 'i', 'u') # index of 'i' in alphabets index = alphabets.index('e') # 2 print('The index of e:', 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)
Output
The index of e: 1 The index of i: 6 Traceback (most recent call last): File "<string>", line 13, in <module> ValueError: tuple.index(x): x not in tuple
Related posts:
Python callable()
Python String isupper()
Statistical Methods for Machine Learning - Disconver how to Transform data into Knowledge with Pytho...
Python Matrices and NumPy Arrays
Python exec()
Python Program to Swap Two Variables
Python Dictionary get()
Python Global, Local and Nonlocal variables
Python Program to Count the Number of Digits Present In a Number
Python Program to Print Colored Text to the Terminal
Python Program to Find the Factorial of a Number
Python String rfind()
Python String rindex()
Python dir()
Python String center()
Python input()
Python Dictionary fromkeys()
Python Dictionary values()
Python Program to Check Whether a String is Palindrome or Not
Python strftime()
Python String casefold()
Python Global Keyword
Python Set symmetric_difference()
Python Program to Capitalize the First Character of a String
Python Program to Calculate the Area of a Triangle
Python Program to Get Line Count of a File
Python Data Types
Python Data Structures and Algorithms - Benjamin Baka
Python list()
Python complex()
Python sleep()
Python print()