d = {}
d = {“john”:40, “peter”:45}
d = {40:”john”, 45:”peter”}
All of the mentioned
String
Dictionary
List
Tuple
d.delete(“john”:40)
d.delete(“john”)
del d[“john”]
del d(“john”:40)
What will be the output of the following Python code snippet?
a={1:"A",2:"B",3:"C"}for i,j in a.items(): print(i,j,end=" ")
1 A 2 B 3 C
1 2 3
A B C
1:”A” 2:”B” 3:”C”
test = {1:'A', 2:'B', 3:'C'}test = {} print(len(test))
0
None
3
An exception is thrown
d1 = {"john":40, "peter":45}d2 = {"john":466, "peter":45}print(d1 > d2)
True
False
Error
d = {"john":40, "peter":45}print(list(d.keys()))
[“john”, “peter”]
[“john”:40, “peter”:45]
(“john”, “peter”)
(“john”:40, “peter”:45)
What is the output of the following code?
a = {1:"A", 2: "B", 3: "C"}b = {4: "D", 5: "E"}a.update(b)print(a)
{1:’A’, 2: ‘B’,3: ‘C’}
{1: ‘A’, 2: ‘b’, 3: ‘c’, 4: ‘D’, 5: ‘E’}
{4: ‘D’, 5: ‘E’}
d1 = {"john":40, "peter":45}d2 = {"john":466, "peter":45}print(d1 == d2)
keys()
getkeys()
allkeys()
keyvalues()
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
What will be the output of the following Python code?
a={'B':5,'A':9,'C':7}print(sorted(a))
[‘A’,’B’,’C’]
[‘B’,’C’,’A’]
[5,7,9]
[9,5,7]
What is the output of following code
d = {1:"A", 2:"B", 1:"C"}print(d)
{1:'A',2:'B'}
{1:'C',2:'B'}
{1:'A',1:'C',2:'B'}
{1: ‘A’, 2: ‘B’}
dict([[1,”A”],[2,”B”]])
{1,”A”,2”B”}
{ }
What will be the output?
dict1={'a':[3,6,8]}print(len(dict1))
2
1
a={}a['a']=1a['b']=[2,3,4] print(a)
Exception is thrown
{‘b’: [2], ‘a’: 1}
{‘b’: [2], ‘a’: [3]}
{'a': 1, 'b': [2, 3, 4]}
d.size()
len(d)
size(d)
d.len ()
a = {}a[1] = 1a['1'] = 2a[1]=a[1]+1count = 0for i in a: count += a[i]print(count)
4
Error, the keys can’t be a mixture of letters and numbers
Which of the following will delete key-value pair for key="tiger" in dictionary?
dic={"lion":"'wild","tiger":"'wild",'cat":"domestic","dog":"domestic"}
del dic("tiger")
dic["tiger"].delete()
delete(dic.["tiger'])
del dic["tiger"]
a={1:"A",2:"B",3:"C"}a.setdefault(4,"D") print(a)
{1: ‘A’, 2: ‘B’, 3: ‘C’, 4: ‘D’}
[1,3,6,10]
d1={"abc":5,"def":6,"ghi":7}print(d1[0])
abc
5
{"abc":5}
error
a={1:"A",2:"B",3:"C"}print(a.get(1,4))
A
Invalid syntax for get method
d = {0: 'a', 1: 'b', 2: 'c'}for x in d.values(): print(d[x])
0 1 2
a b c
0 a 1 b 2 c
none of the mentioned
d = {0: 'a', 1: 'b', 2: 'c'}for i in d: print(i)
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’)])
dict={"Joey":1, "Rachel":2}dict.update({"Phoebe":2})print(dict)
{'Joey': 1, 'Rachel': 2, 'Phoebe': 2}
{“Joey”:1,”Rachel”:}
{“Joey”:1,”Phoebe”:2}
d = {}d[1] = "Python"d[2] = "Java"print(len(d))
The values of a dictionary can be accessed using keys
The keys of a dictionary can be accessed using values
Dictionaries aren’t ordered
Dictionaries are mutable
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
>>> 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
d = {"a": 1, "b": 2}print(2 in d)
KeyError
d = {"john":40, "peter":45}print("john" in d)
a={'a':4,'b':6,'a':7}print(a)
{'a': 5, 'b': 6,'a': 7 }
{'a': 7, 'b': 6}
{'a': 5, 'b': 6 }
Key Error
total={}def insert(items): if items in total: total[items] += 1 else: total[items] = 1insert('Apple')insert('Ball')insert('Apple') print (len(total))
d.len()
a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count) print(a)
6
a={1:"A",2:"B",3:"C"}a.clear() print(a)
{ None:None, None:None, None:None}
{1:None, 2:None, 3:None}
a={1:"A",2:"B",3:"C"}print(a.get(3))
Error, invalid syntax
C
del
remove
removeAll
None of these
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
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}
getkeys ()
key()
a={1:"A",2:"B",3:"C"}b={4:"D",5:"E"}a.update(b) print(a)
{1: ‘A’, 2: ‘B’, 3: ‘C’}
Method update() doesn’t exist for dictionaries
{1: 'A', 2: 'B', 3: 'C', 4: 'D', 5: 'E'}
count={} count[(1,2,4)] = 5 count[(4,2,1)] = 7 count[(1,2)] = 6 count[(4,2,1)] = 2 tot = 0 for i in count: tot=tot+count[i] print(len(count)+tot)
25
17
16
Tuples can’t be made keys of a dictionary
Since “susan” is not a value in the set, Python raises a KeyError exception
It is executed fine and no exception is raised, and it returns None
Since “susan” is not a key in the set, Python raises a KeyError exception
Since “susan” is not a key in the set, Python raises a syntax error
a=dict()print(a[1])
An exception is thrown since the dictionary is empty
‘ ‘
Sequence value pair
Key value pair
Tuple value pair
Record value pair
a={1:"A",2:"B",3:"C"}b=a.copy()b[2]="D" print(a)
Error, copy() method doesn’t exist for dictionaries
{1: ‘A’, 2: ‘D’, 3: ‘C’}
“None” is printed