CLASS -11 COMPUTER SCIENCE
CHAPTER- 8 TUPLE MANIPULATION
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NOTES FOR COMPLETE UNDERSTANDING -
- Tuple is also like list which too can store list of any kind of values.
- It is an immutable data type thus we can not change any value of tuple.
- It is a sequence like string and list but the difference is that list is mutable whereas string and tuple are immutable.
- Creation of a Tuple :
- “( )” parenthesis are used for creation of tuple .
- ( ) ---> empty tuple
- ( 8, 2, 6) ---> integers tuple
- ( 1, 2.5, 3.7, 7) ---> numbers tuple
- (‘p’, ’q’, ’r’ ) ----> characters tuple
- ( ‘p’, 1, ‘b’, 3.5, ‘hi’) ----> mixed values tuple
- (‘one’, ’two’, ’three’, ’four’) ---> string tuple
- Accessing a Tuple :
- The process of accessing tuple elements is same as that with list.
- Like a list, we can access each and every element of a tuple using for loop.
- Like list, tuple also have index. A list and a tuple is same in every way except mutability.
- len ( ) function of python can be used to get the length of tuple.
- Indexing and Slicing:
- T[ p ] returns the item present at index p .
- T[ p : j ] returns a new tuple having all the items of T from index p to j.
- T [ p : j : n ] returns a new tuple having difference of n elements of T from index p to j .
- Membership operator:
- Membership operator “in” and “not in” works similarly as in a list.
- Concatenation and Replication operators:
- + operator adds 2nd tuple at the end of 1st tuple. This process is called concatenation .
- * operator repeats
elements of tuple . This process is called replication.
- Tuple joining : ***Both the tuples should be there to add with +.
- There will occur error when below operations are processed-
- Tuple + number
- Tuple + complex number
- Tuple + string
- Tuple + list
- Tuple + (5) will also generate error because when adding a tuple with a single value, tuple will also be considered as a value and not a tuple .To avoid this we would need to give command >>> tuple +(5,)
- Tuple Replication: ***A Tuple and a number must be given.
- Tuple Deletion :
- Since tuple is immutable data type, it is not possible to delete an individual element of a tuple. With del( ) function, it is possible to delete a complete tuple.
- Tuple ( ) Functions -- This function converts a data type into Tuple data type.
- len( ) Function -- This function returns length of the tuple.
- max( ) Function -- This function returns maximum value in the tuple .
- min( ) Function -- This function returns minimum value in the tuple .
- index( ) Function -- This function returns the index of the element in the tuple .
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