What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2 a) True b) False c) Error d) None

What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2 a) True b) False c) Error d) None
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Answer :

Answer: c Explanation: Arithmetic > operator cannot be used with dictionaries.
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What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 == d2 a) True b) False c) None d) Error

Description : What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 == d2 a) True b) False c) None d) Error

Last Answer : Answer: b Explanation: If d2 was initialized as d2 = d1 the answer would be true.

What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d a) True b) False c) None d) Error

Description : What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d a) True b) False c) None d) Error

Last Answer : Answer: a Explanation: In can be used to check if the key is int dictionary.

What will be the output? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2 a) True b) False c) Error d) None

Description : What will be the output? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2 a) True b) False c) Error d) None

Last Answer : c) Error

What will be the output? d1 = {"john":40, "peter":45} Page No 40 d2 = {"john":466, "peter":45} d1 == d2 a) True b) False c) None d) Error

Description : What will be the output? d1 = {"john":40, "peter":45} Page No 40 d2 = {"john":466, "peter":45} d1 == d2 a) True b) False c) None d) Error

Last Answer : b) False

What will be the output of the following Python code snippet? d = {"john":40, "peter":45} a) “john”, 40, 45, and “peter” b) “john” and “peter” c) 40 and 45 d) d = (40:”john”, 45:”peter”)

Description : What will be the output of the following Python code snippet? d = {"john":40, "peter":45} a) “john”, 40, 45, and “peter” b) “john” and “peter” c) 40 and 45 d) d = (40:”john”, 45:”peter”)

Last Answer : Answer: b Explanation: Dictionaries appear in the form of keys and values.

What will be the output of the following Python code? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Description : What will be the output of the following Python code? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Last Answer : Answer: a Explanation: Execute in the shell to verify.

Which of the following statements create a dictionary? a) d = {} b) d = {“john”:40, “peter”:45} c) d = {40:”john”, 45:”peter”} d) All of the mentioned

Description : Which of the following statements create a dictionary? a) d = {} b) d = {“john”:40, “peter”:45} c) d = {40:”john”, 45:”peter”} d) All of the mentioned

Last Answer : A

What will be the output of the following Python code? >>> a={5,4}>>> b={1,2,4,5}>>> a<b a) {1,2} b) True c) False d) Invalid operation

Description : What will be the output of the following Python code? >>> a={5,4}>>> b={1,2,4,5}>>> a

Last Answer : Answer: b Explanation: a

What will be the output of the following Python code? >>> a={4,5,6}>>> b={2,8,6}>>> a+b a) {4,5,6,2,8} b) {4,5,6,2,8,6} c) Error as unsupported operand type for sets d) Error as the duplicate item 6 is present in both sets

Description : What will be the output of the following Python code? >>> a={4,5,6}>>> b={2,8,6}>>> a+b a) {4,5,6,2,8} b) {4,5,6,2,8,6} c) Error as unsupported operand type for sets d) Error as the duplicate item 6 is present in both sets

Last Answer : Answer: c Explanation: Execute in python shell to verify.

What will be the output of the following Python code? nums = set([1,1,2,3,3,3,4,4])print(len(nums)) a) 7 b) Error, invalid syntax for formation of set c) 4 d) 8

Description : What will be the output of the following Python code? nums = set([1,1,2,3,3,3,4,4])print(len(nums)) a) 7 b) Error, invalid syntax for formation of set c) 4 d) 8

Last Answer : Answer: c Explanation: A set doesn’t have duplicate items.

What will be the output? d = {"john":40, "peter":45} "john" in d a) True b) False c) None d) Error

Description : What will be the output? d = {"john":40, "peter":45} "john" in d a) True b) False c) None d) Error

Last Answer : a) True

What will be the output of the following Python code? >>>t = (1, 2) >>>2 * t a) (1, 2, 1, 2) b) [1, 2, 1, 2] c) (1, 1, 2, 2) d) [1, 1, 2, 2]

Description : What will be the output of the following Python code? >>>t = (1, 2) >>>2 * t a) (1, 2, 1, 2) b) [1, 2, 1, 2] c) (1, 1, 2, 2) d) [1, 1, 2, 2]

Last Answer : Answer: a Explanation: * operator concatenates tuple.

What will be the output of the following Python code? >>>t = (1, 2, 4, 3, 8, 9) >>>[t[i] for i in range(0, len(t), 2)] a) [2, 3, 9] b) [1, 2, 4, 3, 8, 9] c) [1, 4, 8] d) (1, 4, 8)

Description : What will be the output of the following Python code? >>>t = (1, 2, 4, 3, 8, 9) >>>[t[i] for i in range(0, len(t), 2)] a) [2, 3, 9] b) [1, 2, 4, 3, 8, 9] c) [1, 4, 8] d) (1, 4, 8)

Last Answer : Answer: c Explanation: Execute in the shell to verify.

What will be the output of the following Python code? >>>t=(1,2,4,3) >>>t[1:-1] a) (1, 2) b) (1, 2, 4) c) (2, 4) d) (2, 4, 3)

Description : What will be the output of the following Python code? >>>t=(1,2,4,3) >>>t[1:-1] a) (1, 2) b) (1, 2, 4) c) (2, 4) d) (2, 4, 3)

Last Answer : Answer will be (2,)

What will be the output of the following Python code? >>>t=(1,2,4,3) >>>t[1:3] a) (1, 2) b) (1, 2, 4) c) (2, 4) d) (2, 4, 3)

Description : What will be the output of the following Python code? >>>t=(1,2,4,3) >>>t[1:3] a) (1, 2) b) (1, 2, 4) c) (2, 4) d) (2, 4, 3)

Last Answer : Answer: c Explanation: Slicing in tuples takes place just as it does in strings.

What is the output of print 0.1 + 0.2 == 0.3? a) True b) False c) Machine dependent d) Error

Description : What is the output of print 0.1 + 0.2 == 0.3? a) True b) False c) Machine dependent d) Error

Last Answer : Answer: b Explanation: Neither of 0.1, 0.2 and 0.3 can be represented accurately in binary. The round off errors from 0.1 and 0.2 accumulate and hence there is a difference of 5.5511e-17 between (0.1 + 0.2) and 0.3.

Suppose d = {“john”:40, “peter”:45}, what happens when we try to retrieve a value using the expression d[“susan”]? a) Since “susan” is not a value in the set, Python raises a KeyError exception b) It is executed fine and no exception is raised, and it returns None c) Since “susan” is not a key in the set, Python raises a KeyError exception d) Since “susan” is not a key in the set, Python raises a syntax error

Description : Suppose d = { john :40, peter :45}, what happens when we try to retrieve a value using the expression d[ susan ]? a) Since susan is not a value in the set, Python raises a KeyError ... Python raises a KeyError exception d) Since susan is not a key in the set, Python raises a syntax error

Last Answer : c) Since “susan” is not a key in the set, Python raises a KeyError exception

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Description : Which of the following is true for variable names in Python? a) unlimited length b) all private members must have leading and trailing underscores c) underscore and ampersand are the only two special characters allowed d) none of the mentioned

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Description : What is Python?

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Description : Which of the following is a Python tuple? a) [1, 2, 3] b) (1, 2, 3) c) {1, 2, 3} d) {}

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Description : All keywords in Python are in _________ a) lower case b) UPPER CASE c) Capitalized d) None of the mentioned

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What will be the output? d = {"john":40, "peter":45} print(list(d.keys())) a) [“john”, “peter”]. b) [“john”:40, “peter”:45]. c) (“john”, “peter”) d) (“john”:40, “peter”:45)

Description : What will be the output? d = {"john":40, "peter":45} print(list(d.keys())) a) [“john”, “peter”]. b) [“john”:40, “peter”:45]. c) (“john”, “peter”) d) (“john”:40, “peter”:45)

Last Answer : a) [“john”, “peter”].

What is the output? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Description : What is the output? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Last Answer : a) 40

What will be the output? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Description : What will be the output? d = {"john":40, "peter":45} d["john"] a) 40 b) 45 c) “john” d) “peter”

Last Answer : a) 40

Read the code shown below carefully and pick out the keys? d = {"john":40, "peter":45} a) “john”, 40, 45, and “peter” b) “john” and “peter” c) 40 and 45 d) d = (40:”john”, 45:”peter”)

Description : Read the code shown below carefully and pick out the keys? d = {"john":40, "peter":45} a) “john”, 40, 45, and “peter” b) “john” and “peter” c) 40 and 45 d) d = (40:”john”, 45:”peter”)

Last Answer : b) “john” and “peter”

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Description : What is the result of cmp(3, 1)? a) 1 b) 0 c) True d) False

Last Answer : Answer: a Explanation: cmp(x, y) returns 1 if x > y, 0 if x == y and -1 if x < y

If a={5,6,7}, what happens when a.add(5) is executed? a) a={5,5,6,7} b) a={5,6,7} c) Error as there is no add function for set data type d) Error as 5 already exists in the set

Description : If a={5,6,7}, what happens when a.add(5) is executed? a) a={5,5,6,7} b) a={5,6,7} c) Error as there is no add function for set data type d) Error as 5 already exists in the set

Last Answer : Answer: b Explanation: There exists add method for set data type. However 5 isn’t added again as set consists of only non-duplicate elements and 5 already exists in the set. Execute in python shell to verify.

Suppose t = (1, 2, 4, 3), which of the following is incorrect? a) print(t[3]) b) t[3] = 45 c) print(max(t)) d) print(len(t))

Description : Suppose t = (1, 2, 4, 3), which of the following is incorrect? a) print(t[3]) b) t[3] = 45 c) print(max(t)) d) print(len(t))

Last Answer : d) print(len(t)) is incorrect. In python, len(t) is a built-in function that returns the number of items in the tuple t. Since t contains 4 items, len(t) would correctly return 4. a) print(t[ ... of tuple. c) print(max(t)) is correct, it will return the maximum element of tuple which is 4.

Which of the following statements is TRUE? D1: The decomposition of the schema R(A,B,C) into R1(A,B) and R2(A,C) is always lossless. D2: The decomposition of the schema R(A,B,C,D,E) having AD→B, C→DE, B→AE, AE→C into R1(A,B,D) and R2(A,C,D,E) is lossless. (A) Both D1 and D2 (B) Neither D1 and D2 (C) Only D1 (D) Only D2

Description : Which of the following statements is TRUE? D1: The decomposition of the schema R(A,B,C) into R1(A,B) and R2(A,C) is always lossless. D2: The decomposition of the schema R(A,B,C,D,E) having AD→B, C→DE, B→AE, AE→C ... ,D,E) is lossless. (A) Both D1 and D2 (B) Neither D1 and D2 (C) Only D1 (D) Only D2

Last Answer : (D) Only D2

Suppose d = {“john”:40, “peter”:45}. To obtain the number of entries in dictionary which command do we use? a) d.size() b) len(d) c) size(d) d) d.len()

Description : Suppose d = {“john”:40, “peter”:45}. To obtain the number of entries in dictionary which command do we use? a) d.size() b) len(d) c) size(d) d) d.len()

Last Answer : b) len(d)

Suppose d = {“john”:40, “peter”:45}, to delete the entry for “john” what command do we use a) d.delete(“john”:40) b) d.delete(“john”) c) del d[“john”]. d) del d(“john”:40)

Description : Suppose d = {“john”:40, “peter”:45}, to delete the entry for “john” what command do we use a) d.delete(“john”:40) b) d.delete(“john”) c) del d[“john”]. d) del d(“john”:40)

Last Answer : c) del d[“john”].

Which of the following statements create a dictionary? a) d = {} b) d = {“john”:40, “peter”:45} c) d = {40:”john”, 45:”peter”} d) All of the mentioned

Description : Which of the following statements create a dictionary? a) d = {} b) d = {“john”:40, “peter”:45} c) d = {40:”john”, 45:”peter”} d) All of the mentioned

Last Answer : d) All of the mentioned

A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance D1 in the first 10 seconds and distance D2 in the next 10 seconds then, (a) D2 = D1 (b) D2 = 2D1 (c) D2 = 3D1 (d) D2 = 4D1 -Science

Description : A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance D1 in the first 10 seconds and distance D2 in the next 10 seconds then, (a) D2 = D1 (b) D2 = 2D1 (c) D2 = 3D1 (d) D2 = 4D1 -Science

Last Answer : (c) is the answer

In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Description : In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Last Answer : (c) 10 cm

A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by (A) l/d² = + + (B) l/d³ = + ) + (C) = + + (D)

Description : A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by (A) l/d² = + + (B) l/d³ = + ) + (C) = + + (D)

Last Answer : Answer: Option D