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
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