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M3 R5: Programming and Problem Solving through Python

Data Structures in Python

Set 7

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1 What will be the output of the following Python code? a={1:5,2:3,3:4} a.pop(3) print(a)

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={1:5,2:3,3:4} a.pop(3) print(a)

{1: 5}

{1: 5, 2: 3}

Error, syntax error for pop() method

{1: 5, 3: 4}

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2 What will be the output of the following Python code? a={1:"A",2:"B",3:"C"} for i in a: print(i,end=" ")

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={1:"A",2:"B",3:"C"} for i in a: print(i,end=" ")

1 2 3

‘A’ ‘B’ ‘C’

1 ‘A’ 2 ‘B’ 3 ‘C’

Error, it should be: for i in a.items():

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3 What will be the output of the following Python code? a={1:"A",2:"B",3:"C"} print(a.items())

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={1:"A",2:"B",3:"C"} print(a.items())

Syntax error

dict_items([(‘A’), (‘B’), (‘C’)])

dict_items([(1,2,3)])

dict_items([(1, ‘A’), (2, ‘B’), (3, ‘C’)])

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4 Which of the statements about dictionary values if false?

ड़िक्शनरी वैल्यूज में से कौन सा स्टेट्मेंट यदि गलत है?

More than one key can have the same value

The values of the dictionary can be accessed as dict[key]

Values of a dictionary must be unique

Values of a dictionary can be a mixture of letters and numbers

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>>-del-a" target="_blank">5 What will be the output of the following Python code snippet? >>> a={1:"A",2:"B",3:"C"} >>> del a

>>-del-a" target="_blank">निम्नलिखित पायथन कोड का आउटपुट क्या होगा? >>> a={1:"A",2:"B",3:"C"} >>> del a

method del doesn’t exist for the dictionary

del deletes the values in the dictionary

del deletes the entire dictionary

del deletes the keys in the dictionary

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6 If a is a dictionary with some key-value pairs, what does a.popitem() do?

यदि कुछ की-वैल्यू वाले पेअर के साथ एक ड़िक्शनरी है,तो a.popitem () क्या करता है?

Removes an arbitrary element

Removes all the key-value pairs

Removes the key-value pair for the key given as an argument

Invalid method for dictionary

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7 What will be the output of the following Python code snippet? total={} def insert(items): if items in total: total[items] += 1 else: total[items] = 1 insert('Apple') insert

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? total={} def insert(items): if items in total: total[items] += 1 else: total[items] = 1 insert('Apple') insert('Ball')

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8 What will be the output of the following Python code snippet? a = {} a[1] = 1 a['1'] = 2 a[1]=a[1]+1 count = 0 for i in a: count += a[i] print(count)

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a = {} a[1] = 1 a['1'] = 2 a[1]=a[1]+1 count = 0 for i in a: count += a[i] print(count)

Error, the keys can’t be a mixture of letters and numbers

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9 What will be the output of the following Python code snippet? numbers = {} letters = {} comb = {} numbers[1] = 56 numbers[3] = 7 letters[4] = 'B'

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? numbers = {} letters = {} comb = {} numbers[1] = 56 numbers[3] = 7 letters[4] = 'B' comb['Numbers']

Error, dictionary in a dictionary can’t exist

‘Numbers’: {1: 56, 3: 7}

{‘Numbers’: {1: 56}, ‘Letters’: {4: ‘B’}}

{‘Numbers’: {1: 56, 3: 7}, ‘Letters’: {4: ‘B’}}

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10 What will be the output of the following Python code snippet? test = {1:'A', 2:'B', 3:'C'} test = {} print(len(test))

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? test = {1:'A', 2:'B', 3:'C'} test = {} print(len(test))

None

An exception is thrown

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11 What will be the output of the following Python code snippet? test = {1:'A', 2:'B', 3:'C'} del test[1] test[1] = 'D' del test[2] print(len(test))

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? test = {1:'A', 2:'B', 3:'C'} del test[1] test[1] = 'D' del test[2] print(len(test))

Error as the key-value pair of 1:’A’ is already deleted

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12 What will be the output of the following Python code snippet? a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count) pr

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count) print(a)

An exception is thrown

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13 What will be the output of the following Python code snippet? a={} a['a']=1 a['b']=[2,3,4] print(a)

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={} a['a']=1 a['b']=[2,3,4] print(a)

Exception is thrown

{‘b’: [2], ‘a’: 1}

{‘b’: [2], ‘a’: [3]}

{'a': 1, 'b': [2, 3, 4]}

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14 What will be the output of the following Python code? count={} count[(1,2,4)] = 5 count[(4,2,1)] = 7 count[(1,2)] = 6 count[(4,2,1)] = 2 tot = 0

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? count={} count[(1,2,4)] = 5 count[(4,2,1)] = 7 count[(1,2)] = 6 count[(4,2,1)] = 2 tot = 0 for i

Tuples can’t be made keys of a dictionary

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15 What will be the output of the following Python code? a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])

[2,3,4]

An exception is thrown

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16 What will be the output of the following Python code? a={'B':5,'A':9,'C':7} print(sorted(a))

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a={'B':5,'A':9,'C':7} print(sorted(a))

[‘A’,’B’,’C’]

[‘B’,’C’,’A’]

[5,7,9]

[9,5,7]

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17 If b is a dictionary, what does any(b) do?

यदि b एक डिक्शनरी है, तो कोई भी (b) क्या करता है?

Returns True if any key of the dictionary is true

Returns False if dictionary is empty

Returns True if all keys of the dictionary are true

Method any() doesn’t exist for dictionary

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18 What will be the output of the following Python code? a=dict() print(a[1])

निम्नलिखित पायथन कोड का आउटपुट क्या होगा? a=dict() print(a[1])

An exception is thrown since the dictionary is empty

‘ ‘

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19 The data structure which is a mutable ordered sequence of elements is called

डेटा संरचना जो तत्वों का एक परिवर्तनशील क्रमबद्ध अनुक्रम है, कहलाती है

Built in

List

Tuple

Derived data

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20 A sequence of immutable objects is called

अपरिवर्तनीय वस्तुओं का क्रम कहलाता है

Built in

List

Tuple

Derived data

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21 Which of the following function of dictionary gets all the keys from the dictionary

निम्नलिखित में से डिक्शनरी का कौन सा फ़ंक्शन डिक्शनरी से सभी की निकालने के लिए किया जाता है

getkeys()

key()

keys()

none of the mentioned

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22 Which statement is correct

कौन सा कथन सही है

List is mutable & Tuple is immutable

List is immutable & Tuple is mutable

Both List and Tuple are Mutable

Both List and Tuple are Immutable

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23 What data type is the object below ? L=[1, 23, 'hello', 1]

नीचे दिया गया ऑब्जेक्ट किस डेटा प्रकार का है? L=[1, 23, 'hello', 1]

List

Dictionary

Tuple

Array

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24 What is the output of the following program ? print "Hello World".[::-1]

निम्नलिखित प्रोग्राम का आउटपुट क्या है? print "Hello World".[::-1]

dlroWolleH

Hello Worl

Error

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