Python Strings, List, Tuple, Dictionary, Module MCQs with Answers Set 06

Question. What will be the output of the following Python code?
\(x1 = \{"jack":30, "john":35\}\)
\(x2 = \{"jack":355, "john":35\}\)
\(print(x1 > x2)\)
(a) True
(b) False
(c) Error
(d) None
Answer: (c)

Question. What will be the output of the following Python code?
\(f=\{\}\)
\(print(all(f))\)
(a) { }
(b) False
(c) True
(d) An exception is thrown
Answer: (c)

Question. What will be the output of the following Python code?
\(import\ collections\)
\(f=dict()\)
\(f=collections.defaultdict(lambda: 7)\)
\(print(f[4])\)
(a) 4
(b) 0
(c) 7
(d) An exception is thrown
Answer: (c)

Question. What will be the output of the following Python code?
\(x=\{f: f*f\ for\ f\ in\ range(5)\}\)
\(print(x)\)
(a) {0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
(b) {0: 0, 1: 1, 4: 4, 9: 9, 4: 16}
(c) {0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25}
(d) Dictionary comprehension doesn’t exist
Answer: (a)

Question. What will be the output of the following Python code?
\(x=\{1:"P",2:"Q",3:"R"\}\)
\(print(x.get(7,6))\)
(a) Error, invalid syntax
(b) P
(c) 7
(d) 6
Answer: (d)

Question. Which of the following statements create a dictionary?
(a) d = {}
(b) d = {“jack”:30, “peter”:35}
(c) d = {30:”jack”, 35:”peter”}
(d) All of the mentioned
Answer: (d)

Question. What will be the output of the following Python code?
\(import\ collections\)
\(f=collections.OrderedDict((str(p),p)\ for\ p\ in\ range(3))\)
\(print(f)\)
(a) {‘2’:2, ‘0’:0, ‘1’:1}
(b) OrderedDict([('0', 0), ('1', 1), ('2', 2)])
(c) An exception is thrown
(d) ' '
Answer: (b)

Question. Which of these about a dictionary is false?
(a) The values of a dictionary can be accessed using keys
(b) The keys of a dictionary can be accessed using values
(c) Dictionaries aren’t ordered
(d) Dictionaries are mutable
Answer: (b)

Question. What will be the output of the following Python code snippet?
\(total=\{\}\)
\(def\ insert(items):\)
\(if\ items\ in\ total:\)
\(total[items]\ +=\ 1\)
\(else:\)
\(total[items]\ =\ 1\)
\(insert('Mango')\)
\(insert('Pen')\)
\(insert('Mango')\)
\(print(len(total))\)
(a) 3
(b) 2
(c) 1
(d) 0
Answer: (b)

Question. What will be the output of the following Python code snippet?
\(f = \{"peter":50, "henry":55\}\)
\(print(f["peter"])\)
(a) 55
(b) 50
(c) peter
(d) henry
Answer: (b)

Question. What will be the output of the following Python code?
\(x=\{2:6,3:4,4:5\}\)
\(print(x.pop(4,9))\)
(a) 3
(b) 5
(c) 4
(d) Too many arguments for pop() method
Answer: (b)

Question. What will be the output of the following Python code?
\(import\ collections\)
\(x=dict()\)
\(x=collections.defaultdict(int)\)
\(print(x[1])\)
(a) 1
(b) 0
(c) An exception is thrown
(d) ‘ ‘
Answer: (b)

Question. If a is a dictionary with some key-value pairs, what does a.popitem() do?
(a) Removes an arbitrary element
(b) Removes all the key-value pairs
(c) Removes the key-value pair for the key given as an argument
(d) Invalid method for dictionary
Answer: (a)

Question. What will be the output of the following Python code snippet?
\(t = \{1:'J', 2:'K', 3:'L'\}\)
\(del\ t[2]\)
\(t[2] = 'M'\)
\(del\ t[3]\)
\(print(len(t))\)
(a) Error as the key-value pair of 1:’A’ is already deleted
(b) 0
(c) 2
(d) 1
Answer: (c)

Question. What will be the output of the following Python code snippet?
\(f = \{"jack":30, "john":35\}\)
\(print(list(f.keys()))\)
(a) [“jack”:30, “john”:35]
(b) ['jack', 'john']
(c) (“jack”, “john”)
(d) (“jack”:30, “john”:35)
Answer: (b)

Question. What will be the output of the following Python code snippet?
\(d = \{"jack":30, "henry":35\}\)
\(print(d)\)
(a) “jack”, 30, 35, and “henry”
(b) {'jack': 30, 'henry': 35}
(c) “jack” and “henry”
(d) 30 and 35
Answer: (b)

Question. What will be the output of the following Python code snippet?
\(d=\{1:"X",2:"Y",3:"Z"\}\)
\(for\ a,b\ in\ d.items():\)
\(print(a,b,end="\ ")\)
(a) 1 X 2 Y 3 Z
(b) 1 2 3
(c) X Y Z
(d) 1:”X” 2:”Y” 3:”Z”
Answer: (a)

Question. Which of the following isn’t true about dictionary keys?
(a) More than one key isn’t allowed
(b) Keys must be immutable
(c) Keys must be integers
(d) When duplicate keys encountered, the last assignment wins
Answer: (c)

Question. What will be the output of the following Python code snippet?
\(F=\{1:"X",2:"Y",3:"Z"\}\)
\(print(F.get(1,4))\)
(a) 1
(b) 4
(c) X
(d) Invalid syntax for get method
Answer: (c)

Question. What will be the output of the following Python code?
\(f=\{1:"X",2:"Y",3:"Z"\}\)
\(for\ i\ in\ f:\)
\(print(i,end="\ ")\)
(a) 1 2 3
(b) ‘X’ ‘Y’ ‘Z’
(c) 1 ‘X’ 2 ‘Y’ 3 ‘Z’
(d) Error, it should be: for i in a.items():
Answer: (a)

Question. What will be the output of the following Python code?
\(x=\{1:"P",2:"Q",3:"R"\}\)
\(print(x.items())\)
(a) dict_items([(1, 'P'), (2, 'Q'), (3, 'R')])
(b) Syntax error
(c) dict_items([(1,2,3)])
(d) dict_items([(‘P’), (‘Q’), (‘R’)])
Answer: (a)

Question. Let list1 = [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after list1.extend([34, 5])?
(a) [3, 4, 5, 20, 5, 25, 1, 3, 34, 5]
(b) [1, 3, 3, 4, 5, 5, 20, 25, 34, 5]
(c) [25, 20, 5, 5, 4, 3, 3, 1, 34, 5]
(d) [1, 3, 4, 5, 20, 5, 25, 3, 34, 5]
Answer: (a)

Question. Let list1 = [1, 3, 2, 4, 5, 2, 1, 0], What is list1[-1]?
(a) 3
(b) 5
(c) 1
(d) 0
Answer: (d)

Question. Let list1 = [0.5 * a for a in range(0, 4)], list1 is ________
(a) [0, 1, 2, 3]
(b) [0, 1, 2, 3, 4]
(c) [0.0, 0.5, 1.0, 1.5]
(d) [0.0, 0.5, 1.0, 1.5, 2.0]
Answer: (c)

Question. Let list1 = [1, 3, 2, 4, 5, 2, 1, 0], What is list1[:-1]?
(a) 0
(b) [1, 3, 2, 4, 5, 2, 1]
(c) [1, 3, 2, 4, 5, 2]
(d) [1, 3, 2, 4, 5, 2, 1, 0]
Answer: (b)

Question. What Will be The output Of the following code snippet?
\(def\ x(value, values):\)
\(v = 1\)
\(values[0] = 33\)
\(y = 3\)
\(v = [1, 2, 3]\)
\(x(y, v)\)
\(print(y, v[0])\)
(a) 1 1
(b) 1 33
(c) 3 1
(d) 3 33
Answer: (d)

Question. Let list1 = [1, 3, 2, 4, 5, 2, 1, 0], Which of the following is correct?
(a) print(list1[0])
(b) print(list1[:2])
(c) print(list1[:-2])
(d) print(list1[4:6])
Answer: (a)

Question. list1 = [11, 2, 23] and list2 = [2, 11, 23], list1 == list2 is ________
(a) True
(b) False
Answer: (b)

Question. "Welcome to Python".split() is ________
(a) ["Welcome", "to", "Python"]
(b) ("Welcome", "to", "Python")
(c) {"Welcome", "to", "Python"}
(d) "Welcome", "to", "Python"
Answer: (a)

Question. Let list1 = [2, 3, 4], What is list1 * 2?
(a) [2, 6, 4]
(b) [2, 4, 3, 2, 4]
(c) [2, 3, 4, 2, 3, 4]
(d) [2, 3, 4, 4, 3, 2]
Answer: (c)

Question. Let list1 = [3, 4, 5, 18, 5, 22, 1, 2], what is len(list1)?
(a) 6
(b) 7
(c) 8
(d) 5
Answer: (c)

Question. __________ creates a list.
(a) list1 = list()
(b) list1 = []
(c) list1 = list([12, 4, 4])
(d) All of the mentioned
Answer: (d)

Question. What is the output when we execute list(“hello”)?
(a) [‘h’, ‘e’, ‘l’, ‘l’, ‘o’]
(b) [‘hello’]
(c) [‘llo’]
(d) [‘olleh’]
Answer: (a)

Question. Let list1 = [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after list1.pop(1)?
(a) [3, 4, 5, 20, 5, 25, 1, 3]
(b) [1, 3, 3, 4, 5, 5, 20, 25]
(c) [3, 5, 20, 5, 25, 1, 3]
(d) [1, 3, 4, 5, 20, 5, 25]
Answer: (c)

Question. To insert 5 to the third position in list1, use _______.
(a) list1.insert(3, 5)
(b) list1.insert(2, 5)
(c) list1.add(3, 5)
Answer: (b)