Strings:
===============================================
"a"+"bc"
a) a
b) bc
c) bca
d) abc
Answer: d
Explanation: + operator is concatenation operator.
2. What will be the output of the following Python statement?
>>>"abcd"[2:]
a) a
b) ab
c) cd
d) dc
Answer: c
Explanation: Slice operation is performed on the string.
3. What will be the output of the following Python code?
>>> str1 = 'hello'
>>> str2 = ','
>>> str3 = 'world'
>>> str1[-1:]
a) olleh
b) hello
c) h
d) o
Answer: d
Explanation: -1 corresponds to the last index.
4. What arithmetic operators can be used with strings?
a) +
b) *
c) –
d) All of the mentioned
Answer: a
Explanation: + is used to concatenate.
5. What will be the output of the following Python code?
>>>print (r"\nhello")
a) a new line and hello
b) \nhello
c) the letter r and then hello
d) error
Answer: b
Explanation: When prefixed with the letter ‘r’ or ‘R’ a string literal becomes a raw string and the escape sequences such as \n are not converted.
6. What will be the output of the following Python statement?
>>>print('new' 'line')
a) Error
b) Output equivalent to print ‘new\nline’
c) newline
d) new line
Answer: c
Explanation: String literal separated by whitespace are allowed. They are concatenated.
7. What will be the output of the following Python code?
>>>str1="helloworld"
>>>str1[::-1]
a) dlrowolleh
b) hello
c) world
d) helloworld
Answer: a
Explanation: execute in reverse
8. print(0xA + 0xB + 0xC):
a) 0xA0xB0xC
b) Error
c) 0x22
d) 33
Answer: d
Explanation: 0xA and 0xB and 0xC are hexadecimal integer literals representing
the decimal values 10, 11 and 12 respectively. There sum is 33.
9. What will be the output of the following Python code?
>>>example = "snow world"
>>>print(example[5:7])
a) wo
b) world
c) sn
d) rl
Answer: a
Explanation: Execute in the shell and verify.
10. What will be the output of the following Python code?
>>>example = "snow world"
>>>example[3] = 's'
>>>print(example)
a) snow
b) snow world
c) Error
d) snos world
Answer: c
Explanation: Strings cannot be modified,
11. What will be the output of the following Python code?
>>>max("what are you")
a) error
b) u
c) t
d) y
Answer: d
Explanation: Max returns the character with the highest ASCII value.
12. Given a string example=”hello” what is the output of example.count(‘l’)?
a) 2
b) 1
c) None
d) 0
Answer: a
Explanation: l occurs twice in hello.
13. What will be the output of the following Python code?
>>>example = "helle"
>>>example.find("e")
a) Error
b) -1
c) 1
d) 0
Answer: c
Explanation: Returns the lowest index.
14. What will be the output of the following Python code?
>>>example = "helle"
>>>example.rfind("e")
a) -1
b) 4
c) 3
d) 1
Answer: b
Explanation: It will start the search from the right side, but the index will give from the 0th index.
15. What will be the output of the following Python code?
>>>example="helloworld"
>>>example[::-1].startswith("d")
a) dlrowolleh
b) True
c) -1
d) None
Answer: b
Explanation: Starts with checks if the given string starts with the parameter that is passed.
16. Which of the following statements prints hello\example\test.txt?
a) print(“hello\example\test.txt”)
b) print(“hello\\example\\test.txt”)
c) print(“hello\”example\”test.txt”)
d) print(“hello”\example”\test.txt”)
Answer: b
Explanation: \t consider as escape sequence character. Here we have 3 possibilities
1. we have to use \\"string"
2. we have to use raw_path ("string") function
3. we have to use r"string" which means raw string
17. Suppose data is “\t\tWorld\n”, what is data.strip()?
a) \t\tWorld\n
b) \t\tWorld\n
c) \t\tWORLD\n
d) World
Answer: d
Explanation: If we print data, we will get output as 4 spaces again 4 spaces & at the end of the string new line will print.
strip() function will remove unwanted content on both sides (Note: by default input of strip() is space)
Ans: So it will remove spaces on both sides ---->World
18. The format function, when applied on a string returns ___________
a) Error
b) int
c) bool
d) str
Answer: d
Explanation: Format function returns a string.
19. What will be the output of the “hello” +1+2+3?
a) hello123
b) hello
c) Error
d) hello6
Answer: c
Explanation: Cannot concatenate str and int objects.
20. What will be the output of the following Python code?
>>>print("D", end = ' ')
>>>print("C", end = ' ')
>>>print("B", end = ' ')
>>>print("A", end = ' ')
a) DCBA
b) A, B, C, D
c) D C B A
d) D, C, B, A will be displayed on four lines
Answer: c
Explanation: Execute in the shell.
21. Say s=”hello” what will be the return value of type(s)?
a) int
b) bool
c) str
d) String
Answer: c
Explanation: str is used to represent strings in python.
22. What is “Hello”.replace(“l”, “e”)?
a) Heeeo
b) Heelo
c) Heleo
d) None
Answer: a
Explanation: Execute in shell to verify.
23. Suppose x is 345.3546, what is format(x, “10.3f”) (_ indicates space).
a) __345.3556
b) _______345.355
c) _______345
d) ___345.3546
Answer: b
Explanation: Execute in the shell to verify.
24.What will be the output of the following Python statement?(python 3.xx)
>>>print(format("Welcome", "10s"), end = '#')
>>>print(format(111, "4d"), end = '#')
>>>print(format(924.656, "3.2f"))
a) Welcome# 111#924.66
b) Welcome#111#924.66
c) Welcome#111#.66
d) Welcome # 111#924.66
Answer: d
Explanation: Execute in the shell to verify.
25. 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.
26. 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.
27. 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.
28. What will be the output of the following Python code? (padding concept)
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.
29. What will be the output of the following Python code? (padding concept)
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.
30. 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.
31. 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.
32. 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.
33. 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
34. 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.
35. 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.
36. 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.
37. 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: In python A bytes object is returned by encode.
38. 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.
39. 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.
40. 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.
41. What will be the output of the following Python code?
print("abcdef".find("cd") == "cd" in "abcdef")
a) True
b) False
c) Error
d) None of the mentioned
Answer: b
Explanation: The function find() returns the position of the substring in
the given string whereas the in keyword returns a value of Boolean type.
42 What will be the output of the following Python code?
print("abcdef".find("cd"))
a) True
b) 2
c) 3
d) None of the mentioned
Answer: b
Explanation: The first position in the given string at which
the substring can be found is returned.
43. What will be the output of the following Python code?
print("ccdcddcd".find("c"))
a) 4
b) 0
c) Error
d) True
Answer: b
Explanation: The first position in the given string at which
the substring can be found is returned.
44. What will be the output of the following Python code?
print("Hello {0} and {1}".format('swetha', 'meera'))
a) Hello swetha and meera
b) Hello {0} and {1} swetha meera
c) Error
d) Hello 0 and 1
Answer: a
Explanation: The numbers 0 and 1 represent the position at which the strings are present.
45. What will be the output of the following Python code?
print("Hello {1} and {0}".format('bin', 'foo'))
a) Hello foo and bin
b) Hello bin and foo
c) Error
d) None of the mentioned
Answer: a
Explanation: The numbers 0 and 1 represent the position at which the strings are present.
46. What will be the output of the following Python code?
print("Hello {} and {}".format('foo', 'bin'))
a) Hello foo and bin
b) Hello {} and {}
c) Error
d) Hello and
Answer: a
Explanation: It is the same as Hello {0} and {1}.
47. What will be the output of the following Python code?
print("Hello {name1} and {name2}".format('foo', 'bin'))
a) Hello foo and bin
b) Hello {name1} and {name2}
c) Error
d) Hello and
Answer: c
Explanation: The arguments passed to the function format aren’t keyword arguments.
48. What will be the output of the following Python code?
print("Hello {name1} and {name2}".format(name1='foo', name2='bin'))
a) Hello foo and bin
b) Hello {name1} and {name2}
c) Error
d) Hello and
Answer: a
Explanation: The arguments are accessed by their names.
49. What will be the output of the following Python code?
print("Hello {0!r} and {0!s}".format('foo', 'bin'))
a) Hello foo and foo
b) Hello ‘foo’ and foo
c) Hello foo and ‘bin’
d) Error
Answer: b
Explanation: !r causes the characters ‘ or ” to be printed as well.
50. What will be the output of the following Python code?
print("Hello {0} and {1}".format(('foo', 'bin')))
a) Hello foo and bin
b) Hello (‘foo’, ‘bin’) and (‘foo’, ‘bin’)`
c) Error
d) None of the mentioned
Answer: c
Explanation: IndexError, the tuple index is out of range.
51. What will be the output of the following Python code?
print("Hello {0[0]} and {0[1]}".format(('foo', 'bin')))
a) Hello foo and bin
b) Hello (‘foo’, ‘bin’) and (‘foo’, ‘bin’)
c) Error
d) None of the mentioned
Answer: a
Explanation: The elements of the tuple are accessed by their indices.
52. What will be the output of the following Python code snippet?
print('The sum of {0} and {1} is {2}'.format(2, 10, 12))
a) The sum of 2 and 10 is 12
b) Error
c) The sum of 0 and 1 is 2
d) None of the mentioned
Answer: a
Explanation: The arguments passed to the function format can be integers also.
53. What will be the output of the following Python code snippet?
print('The sum of {0:b} and {1:x} is {2:o}'.format(2, 10, 12))
a) The sum of 2 and 10 is 12
b) The sum of 10 and a is 14
c) The sum of 10 and a is c
d) Error
Answer: b
Explanation: 2 is converted to binary, 10 to hexadecimal and 12 to octal.
54. What will be the output of the following Python code?
print('ab12'.isalnum())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: The string has only letters and digits.
55. What will be the output of the following Python code?
print('ab,12'.isalnum())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: The character , is not a letter or a digit.
56. What will be the output of the following Python code?
print('ab'.isalpha())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: The string has only letters.
57. What will be the output of the following Python code?
print('a B'.isalpha())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: Space is not a letter.
58. What will be the output of the following Python code snippet?
print('0xa'.isdigit())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: Hexadecimal digits aren’t considered as digits (a-f).
59. What will be the output of the following Python code snippet?
print(''.isdigit())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: If there are no characters then False is returned.
60. What will be the output of the following Python code snippet?
print('my_string'.isidentifier())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: It is a valid identifier.
61. What will be the output of the following Python code snippet?
print('__foo__'.isidentifier())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: It is a valid identifier.
62. What will be the output of the following Python code snippet?
print('for'.isidentifier())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: Even keywords are considered as valid identifiers.
63. What will be the output of the following Python code snippet?
print('abc'.islower())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: There are no uppercase letters.
64. What will be the output of the following Python code snippet?
print('a@ 1,'.islower())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: There are no uppercase letters.
65. What will be the output of the following Python code snippet?
print('11'.isnumeric())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: All the characters are numeric.
66. What will be the output of the following Python code snippet?
print('1.1'.isnumeric())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: The character . is not a numeric character.
67. What will be the output of the following Python code snippet?
print(''''''.isspace())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: None.
68. What will be the output of the following Python code snippet?
print('\t'.isspace())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: Tab Spaces are considered as spaces.
69. What will be the output of the following Python code snippet?
print('HelloWorld'.istitle())
a) True
b) False
c) None
d) Error
Answer: b
Explanation: The letter W is uppercased.
70. What will be the output of the following Python code snippet?
print('Hello World'.istitle())
a) True
b) False
c) None
d) Error
Answer: a
Explanation: It is in title form.
71. What will be the output of the following Python code?
print('1Rn@'.lower())
a) n
b) 1rn@
c) rn
d) r
Answer: b
Explanation: Uppercase letters are converted to lowercase.
The other characters are left unchanged.
72. What will be the output of the following Python code?
print('''\tfoo'''.lstrip())
a) \tfoo
b) foo
c) foo
d) none of the mentioned
Answer: b
Explanation: All leading whitespace is removed.
73. What will be the output of the following Python code?
print('xyyzxxyxyy'.lstrip('xyy'))
a) error
b) zxxyxyy
c) z
d) zxxy
Answer: b
Explanation: The leading characters containing xyy are removed.
74. What will be the output of the following Python code?
print('abcdef'.partition('cd'))
a) (‘ab’, ‘ef’)
b) (‘abef’)
c) (‘ab’, ‘cd’, ‘ef’)
d) 2
Answer: c
Explanation: The string is split into three parts by partition.
75. What will be the output of the following Python code?
print('abcdefcdgh'.partition('cd'))
a) (‘ab’, ‘cd’, ‘ef’, ‘cd’, ‘gh’)
b) (‘ab’, ‘cd’, ‘efcdgh’)
c) (‘abcdef’, ‘cd’, ‘gh’)
d) error
Answer: b
Explanation: The string is partitioned at the point where the separator first appears.
76. What will be the output of the following Python code?
print('abcd'.partition('cd'))
a) ('ab', 'cd', '')
b) (‘ab’, ‘cd’)
c) error
d) none of the mentioned
Answer: a
Explanation: The last item is a null string.
77. What will be the output of the following Python code snippet?
print('cd'.partition('cd'))
a) (‘cd’)
b) (”)
c) (‘cd’, ”, ”)
d) ('', 'cd', '')
Answer: d
Explanation: The entire string has been passed as the separator hence
the first and the last item of the tuple returned are null strings.
78. What will be the output of the following Python code snippet?
print('abcdef12'.replace('cd', '12'))
a) ab12ef12
b) abcdef12
c) ab12efcd
d) none of the mentioned
Answer: a
Explanation: All occurrences of the first substring are replaced by the second substring.
79. What will be the output of the following Python code snippet?
print('abef'.replace('cd', '12'))
a) abef
b) 12
c) error
d) none of the mentioned
Answer: a
Explanation: The first substring is not present in the given string and hence nothing is replaced.
80. What will be the output of the following Python code snippet?
print('abcefd'.replace('cd', '12'))
a) ab1ef2
b) abcefd
c) ab1efd
d) ab12ed2
Answer: b
Explanation: The first substring is not present in the given string and hence nothing is replaced.
81. What will be the output of the following Python code snippet?
print('xyyxyyxyxyxxy'.replace('xy', '12', 3))
a) 12y12y12xyxxy
b) 12y12y1212x12
c) 12yxyyxyxyxxy
d) xyyxyyxyxyx12
Answer: a
Explanation: The first 0 occurrences of the given substring are replaced.
82. What will be the output of the following Python code snippet?
print('xyyxyyxyxyxxy'.replace('xy', '12', 100))
a) xyyxyyxyxyxxy
b) 12y12y1212x12
c) none of the mentioned
d) error
Answer: b
Explanation: The first 100 occurrences of the given substring are replaced.
83. What will be the output of the following Python code snippet?
print('abcdefcdghcd'.split('cd'))
a) [‘ab’, ‘ef’, ‘gh’]
b) [‘ab’, ‘ef’, ‘gh’, ”]
c) (‘ab’, ‘ef’, ‘gh’)
d) (‘ab’, ‘ef’, ‘gh’, ”)
Answer: b
Explanation: The given string is split and a list of substrings is returned.
Note : when we get at the ens then it will get empty string
84. What will be the output of the following Python code snippet?
print('abcdefcdghcd'.split('cd', 0))
a) [‘abcdefcdghcd’]
b) ‘abcdefcdghcd’
c) error
d) none of the mentioned
Answer: a
Explanation: The given string is split at 0 occurrences of the specified substring.
85. What will be the output of the following Python code snippet?
print('abcdefcdghcd'.split('cd', 2))
a) [‘ab’, ‘ef’, ‘ghcd’]
b) [‘ab’, ‘efcdghcd’]
c) [‘abcdef’, ‘ghcd’]
d) none of the mentioned
Answer: a
Explanation: The string is split into a maximum of maxsplit+1 substrings.
86. What will be the output of the following Python code snippet?
print('ab\ncd\nef'.splitlines())
a) [‘ab’, ‘cd’, ‘ef’]
b) [‘ab\n’, ‘cd\n’, ‘ef\n’]
c) [‘ab\n’, ‘cd\n’, ‘ef’]
d) [‘ab’, ‘cd’, ‘ef\n’]
Answer: a
Explanation: It is similar to calling split(‘\n’).
87. What will be the output of the following Python code snippet?
print('Ab!2'.swapcase())
a) AB!@
b) ab12
c) aB!2
d) aB1@
Answer: c
Explanation: Lowercase letters are converted to uppercase and vice-versa.
88. What will be the output of the following Python code snippet?
print('ab cd ef'.title())
a) Ab cd ef
b) Ab cd eF
c) Ab Cd Ef
d) None of the mentioned
Answer: c
Explanation: The first letter of every word is capitalized.
89. What will be the output of the following Python code snippet?
print('ab cd-ef'.title())
a) Ab cd-ef
b) Ab Cd-ef
c) Ab Cd-Ef
d) None of the mentioned
Answer: c
Explanation: The first letter of every word is capitalized. Special symbols terminate a word.
90. What will be the output of the following Python code snippet?
print('ab'.zfill(5))
a) 000ab
b) 00ab0
c) 0ab00
d) ab000
Answer: a
Explanation: The string is padded with zeros on the left-hand side. It is useful for formatting numbers.
91. What will be the output of the following Python code snippet?
print('+99'.zfill(5))
a) 00+99
b) 00099
c) +0099
d) +++99
Answer: c
Explanation: zeros are filled in between the first sign and the rest of the string.
92. What will be the output of the following Python statement?
>>>chr(ord('A'))
a) A
b) B
c) a
d) Error
Answer: a
Explanation: Execute in shell to verify.
93. What will be the output of the following Python statement?
>>>print(chr(ord('b')+1))
a) C
b) b
c) c
d) d
Answer: c
Explanation: Execute in the shell to verify.
94. What will be displayed by print(ord(‘b’) – ord(‘a’))?
a) 0
b) 1
c) -1
d) 2
Answer: b
Explanation: ord() function will convert characters into ASCII values ord('a') ==>97 & ord('b') ==>98
& char() function will convert ASCII values into characters.
Hence the output of this code is 98-97, which is equal to 1.
95. To concatenate two strings to a third what statements are applicable?
a) s3 = s1 . s2
b) s3 = s1.add(s2)
c) s3 = s1.__add__(s2)
d) s3 = s1 * s2
Answer: c
Explanation: __add__ is another method that can be used for concatenation.
96. The output of executing string.ascii_letters can also be achieved by:
a) string.ascii_lowercase_string.digits
b) string.ascii_lowercase+string.ascii_upercase
c) string.letters
d) string.lowercase_string.upercase
Answer: b
Explanation: Execute in shell and check.
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