Friday

Chapter – 8: TUPLES || Computer Science || Class 11

 

Chapter – 8: TUPLES

Very Short answer Type Questions Q.1 What do you understand by immutability?

Ans: Immutability means not changeable. The immutable types are those that can never change their value in place. In python following types are immutable – 

I.          Integers

II.         Floating point numbers

III.       Booleans

IV.        Strings

V.         Tuples 

Q.2    What is the length of the tuple shown below?

  T = ((((„a‟, 1), ‟b‟, ‟c‟), ‟d‟, 2), ‟e‟, 3)  Ans: 3, because tuple contains only 3 elements.

Q.3    If a is (1, 2, 3), what is the difference (if any) between a*3 and [a, a, a]?

Ans: a*3 is different from [a,a,a] because, a*3 will produce a tuple (1,2,3,1,2,3,1,2,3) and [a, a, a]

will produce a list of tuples [(1,2,3),(1,2,3),(1,2,3)].

Q.4   If a is (1, 2, 3), is a *3 equivalent to a + a + a? 

Ans: Yes

Q.5     If a is (1, 2, 3),  what is the meaning of a [1:1] = 9?

Ans: This will produce an error: TypeError: 'tuple' object does not support item assignment Q.6 If a is (1, 2, 3), what is the meaning of a [1:2] = 4 and a [1:1] = 4?

Ans: This will produce an error: TypeError: 'tuple' object does not support item assignment Q.7 Does a slice operator always produce a new Tuple?

Ans: Yes

Q.8  How is an empty Tuple created?

Ans: To create an empty tuple we have to write – 

          >>>T=()    or    >>>T=tuple()

Q.9          How is a tuple containing just one element created?

Ans: Following methods may be used to create single valued tuple – 

          >>>T=3,      or    >>>T=(4,) 

Q.10 What is the difference between (30) and (30,)?

Ans: (30) is an integer while (30,) is a tuple. 

Short Answer Type Questions 

Q.1        How are Tuples different from Lists when both are sequences?

Ans: Tuples are similar to lists in many ways like indexing, slicing, and accessing individual values

but they are different in the sense that –  Tuples are immutable while lists are mutable.

List can grow or shrink while tuples cannot.           Q.2    Can tuples be nested?

Ans: Yes, tuples can be nested. e.g (1,2,3,(4,5,6))

Q.3    Discuss the utility and significance of Tuples.

Ans: Tuples are great for holding static data that you don't plan on modifying and changing a lot. Tuples are four to seven times faster than lists. This means for every list item manipulated, four to seven tuples could be manipulated within that time frame. This has huge advantages for scientific work, as this allows for speedy data reading.

Q.4         How can you say that a tuple is an ordered list of objects?

Ans: A tuple is an ordered list of objects. This is evidenced by the fact that the objects can be accessed through the use of an ordinal index amd for a given index, same element is returned everytime.

Q.5 How can you add an extra element to a tuple?

Ans:  We can add an extra element to the tuple as follows –       >>>T = T +(9,) e.g. 

           

Q.6     Find out the output generated by following code fragments:  (a) plane = (“Passengers”, ”Luggage”)       plane [1] = “Snakes”

           (b) (a, b, c) = (1,2,3)                                                    (c) (a, b, c, d) = (1,2,3)

           (d) a, b, c, d = (1,2,3)                                                 (e) a, b, c, d, e = (p, q, r, s, t) = t1

Ans: (a) TypeError: 'tuple' object does not support item assignment  (b) This will assign 1 to a, 2 to b and 3 to c.

 

 

(c)  ValueError: not enough values to unpack (expected 4, got 3)

(d) ValueError: not enough values to unpack (expected 4, got 3)

(e)  If tuple t1 has 5 values then this will assign first value of t1 in to a and p , next value to b and q and so on.  

Q.7       Predict the output – 

                                                       Ans: True                                                                                                                                                                                                                                                                                                                                                                 

 

 

Q.8       Predict the output – 

                                                Ans: TypeError: 'tuple' object does not support item assignment

 

 

Skill Based Questions

Q.1 WAP that creates a tuple storing first 9 items of Fibonacci Series.

Ans: 

 

 

 

 

 

Q.2       WAP that creates a third tuple after adding two tuples. Add second after first tuple.

Ans:  

 

 

 

 

 

 

Q.3           WAP to calculate the mean of the numbers of the tuple.

Ans:

 

 

 

 

 

Q.4       WAP to calculate the average of the numbers of the tuple.

Ans:

 

 

 

 

            

0 comments:

Post a Comment

Thanks for leaving a comment. As soon as it's approved, it will appear.