Python Strings MCQs with Answers Set 02

Question. What is “Hello”.replace(“l”, “e”)?
(a) Heeeo
(b) Heelo
(c) Heleo
(d) None
Answer: a
Explanation: Execute in shell to verify.

Question. To retrieve the character at index 3 from string s=”Hello” what command do we execute (multiple answers allowed)?
(a) s[]
(b) s.getitem(3)
(c) \(s.\_\_getitem\_\_(3)\)
(d) s.getItem(3)
Answer: c
Explanation: __getitem(..) can be used to get character at index specified as parameter.

Question. To return the length of string s what command do we execute?
(a) \(s.\_\_len\_\_()\)
(b) len(s)
(c) size(s)
(d) s.size()
Answer: a
Explanation: Execute in shell to verify.

Question. If a class defines the \( \_\_str\_\_(self) \) method, for an object obj for the class, you can use which command to invoke the \( \_\_str\_\_ \) method.
(a) \(obj.\_\_str\_\_()\)
(b) str(obj)
(c) print obj
(d) all of the mentioned
Answer: d
Explanation: Execute in shell to verify.

Question. To check whether string s1 contains another string s2, use ________
(a) \(s1.\_\_contains\_\_(s2)\)
(b) s2 in s1
(c) s1.contains(s2)
(d) si.in(s2)
Answer: a
Explanation: s2 in s1 works in the same way as calling the special function \( \_\_contains\_\_ \).

Question. Suppose i is 5 and j is 4, i + j is same as ________
(a) \(i.\_\_add(j)\)
(b) \(i.\_\_add\_\_(j)\)
(c) \(i.\_\_Add(j)\)
(d) \(i.\_\_ADD(j)\)
Answer: b
Explanation: Execute in shell to verify.

Question. What will be the output of the following Python code?
class Count:
    def __init__(self, count = 0):
        self.__count = count
c1 = Count(2)
c2 = Count(2)
print(id(c1) == id(c2), end = " ")
s1 = "Good"
s2 = "Good"
print(id(s1) == id(s2))
(a) True False
(b) True True
(c) False True
(d) False False
Answer: c
Explanation: Execute in the shell objects cannot have same id, however in the case of strings its different.

Question. What will be the output of the following Python code?
class Name:
    def __init__(self, firstName, mi, lastName):
        self.firstName = firstName
        self.mi = mi
        self.lastName = lastName
firstName = "John"
name = Name(firstName, 'F', "Smith")
firstName = "Peter"
name.lastName = "Pan"
print(name.firstName, name.lastName)
(a) Peter Pan
(b) John Pan
(c) Peter Smith
(d) John Smith
Answer: b
Explanation: Execute in the shell to verify.

Question. What function do you use to read a string?
(a) input(“Enter a string”)
(b) eval(input(“Enter a string”))
(c) enter(“Enter a string”)
(d) eval(enter(“Enter a string”))
Answer: a
Explanation: Execute in shell to verify.

Question. Suppose x is 345.3546, what is format(x, “10.3f”) (_ indicates space).
(a) __345.355
(b) ___345.355
(c) ____345.355
(d) _____345.354
Answer: b
Explanation: Execute in the shell to verify.

Question. What will be the output of the following Python code?
print("abc DEF".capitalize())
(a) abc def
(b) ABC DEF
(c) Abc def
(d) Abc Def
Answer: c
Explanation: The first letter of the string is converted to uppercase and the others are converted to lowercase.

Question. What will be the output of the following Python code?
print("abc. DEF".capitalize())
(a) abc. def
(b) ABC. DEF
(c) Abc. def
(d) Abc. Def
Answer: c
Explanation: The first letter of the string is converted to uppercase and the others are converted to lowercase.

Question. What will be the output of the following Python code?
print("abcdef".center())
(a) cd
(b) abcdef
(c) error
(d) none of the mentioned
Answer: c
Explanation: The function center() takes at least one parameter.

Question. What will be the output of the following Python code?
print("abcdef".center(0))
(a) cd
(b) abcdef
(c) error
(d) none of the mentioned
Answer: b
Explanation: The entire string is printed when the argument passed to center() is less than the length of the string.

Question. What will be the output of the following Python code?
print('*', "abcdef".center(7), '*')
(a) * abcdef *
(b) * abcdef *
(c) *abcdef *
(d) * abcdef*
Answer: b
Explanation: Padding is done towards the left-hand-side first when the final string is of odd length. Extra spaces are present since we haven’t overridden the value of sep.

Question. What will be the output of the following Python code?
print('*', "abcdef".center(7), '*', sep='')
(a) * abcdef *
(b) * abcdef *
(c) *abcdef *
(d) * abcdef*
Answer: d
Explanation: Padding is done towards the left-hand-side first when the final string is of odd length.

Question. What will be the output of the following Python code?
print('*', "abcde".center(6), '*', sep='')
(a) * abcde *
(b) * abcde *
(c) *abcde *
(d) * abcde*
Answer: c
Explanation: Padding is done towards the right-hand-side first when the final string is of even length.

Question. What will be the output of the following Python code?
print("abcdef".center(7, 1))
(a) 1abcdef
(b) abcdef1
(c) abcdef
(d) error
Answer: d
Explanation: TypeError, the fill character must be a character, not an int.

Question. What will be the output of the following Python code?
print("abcdef".center(7, '1'))
(a) 1abcdef
(b) abcdef1
(c) abcdef
(d) error
Answer: a
Explanation: The character ‘1’ is used for padding instead of a space.

Question. What will be the output of the following Python code?
print("abcdef".center(10, '12'))
(a) 12abcdef12
(b) abcdef1212
(c) 1212abcdef
(d) error
Answer: d
Explanation: The fill character must be exactly one character long.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('yy'))
(a) 2
(b) 0
(c) error
(d) none of the mentioned
Answer: a
Explanation: Counts the number of times the substring ‘yy’ is present in the given string.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('yy', 1))
(a) 2
(b) 0
(c) 1
(d) none of the mentioned
Answer: a
Explanation: Counts the number of times the substring ‘yy’ is present in the given string, starting from position 1.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('yy', 2))
(a) 2
(b) 0
(c) 1
(d) none of the mentioned
Answer: c
Explanation: Counts the number of times the substring ‘yy’ is present in the given string, starting from position 2.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('xyy', 0, 100))
(a) 2
(b) 0
(c) 1
(d) error
Answer: a
Explanation: An error will not occur if the end value is greater than the length of the string itself.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('xyy', 2, 11))
(a) 2
(b) 0
(c) 1
(d) error
Answer: b
Explanation: Counts the number of times the substring ‘xyy’ is present in the given string, starting from position 2 and ending at position 11.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".count('xyy', -10, -1))
(a) 2
(b) 0
(c) 1
(d) error
Answer: b
Explanation: Counts the number of times the substring ‘xyy’ is present in the given string, starting from position 2 and ending at position 11.

Question. What will be the output of the following Python code?
print('abc'.encode())
(a) abc
(b) ‘abc’
(c) b’abc’
(d) h’abc’
Answer: c
Explanation: A bytes object is returned by encode.

Question. What is the default value of encoding in encode()?
(a) ascii
(b) qwerty
(c) utf-8
(d) utf-16
Answer: c
Explanation: The default value of encoding is utf-8.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".endswith("xyy"))
(a) 1
(b) True
(c) 3
(d) 2
Answer: b
Explanation: The function returns True if the given string ends with the specified substring.

Question. What will be the output of the following Python code?
print("xyyzxyzxzxyy".endswith("xyy", 0, 2))
(a) 0
(b) 1
(c) True
(d) False
Answer: d
Explanation: The function returns False if the given string does not end with the specified substring.