Chapter – 5: STRING MANIPULATION
Very Short answer Type
Questions
Q.1
which of the following is not a Python
legal string operation?
(a)‟abc‟+‟abc‟ (b) „abc‟*3 (c)‟abc‟ + 3 (d)‟abc‟.lower()
Ans: (c) ‗abc‘ + 3
Q.2
Out of the following operators, which
ones can be used with strings?
=, -,
*, /, //,
%, >, <>,
in, not in, <=
Ans: /, // and %
Q.3 From
the string S = “CARPE DIEM”. Which ranges return “DIE” and “CAR”? Ans: S[6:9]
for ―DIE‖ and S[0:3] for ―CAR‖
Q.4 Given a string S = “CARPE DIEM”. If n is
length/2 then what would following return?
(a) S[:n] (b) S[n:] (c) S[n:n] (d) S[1:n] (e)
S[n:length-1] Ans: (a) “CARPE‖ (b) “DIEM” (c) „ ‟
(d) “ARPE” (e) “DIE”
Q.5 What would following
expression return?
(a) ”Hello World”.upper().lower() (b)
”Hello World”.lower().upper()
(c) ”Hello
World”.find(“Wor”,1,6) (d)
”Hello World”.find(“Wor”)
(e)
”Hello World”.find(“wor”) (f)
”Hello World”.isalpha()
(g)
”Hello World”.isalnum() (h)
”Hello World”.isdigit()
(i) “123FGH”.isdigit()
Ans: (a) 'hello world' (b)
'HELLO WORLD'
(c) -1 (d)
6
(e)
-1 (f) False
(g)
False (h)
False
(i) False
Short Answer Type
Questions Q.1 What is a string slice?
How is it useful?
Ans: String Slice is a
part of a string containing some
contiguous characters from the string. It is accessed from the string by
providing a range in ―[ ]‖ brackets i.e. S [n:m]. Python returns all the
characters at indices n, n+1, n+2 . . . m-1 e.g.
‗Barabanki‘.[4:7]
will return ‗ban‘.
Q.2 Write a python script that traverses through
an input string and prints its characters in different lines – two characters
per line.
Ans:
Q.3 Which functions would you chose to use to
remove leading and trailing white spaces from a given string?
Ans: Python String strip() function will remove leading and
trailing whitespaces. If you want to
remove only leading or trailing
spaces, use lstrip() or
rstrip() function
instead.
Q.4 Suggest appropriate functions for the
following tasks – (a) To check whether
the string contains digits.
(b) To find the occurrence a string within
another string.
(c) To convert the first letter of a string to
upper case.
(d) To convert all the letters of a string to
upper case.
(f)
To check
whether all the letters of the string are in capital letters.
(g) to remove all the white spaces from the
beginning of a string.
Ans: (a) isalnum() (b) find() (c) capitalize()
(d) upper() (f) isupper() (g) lstrip()
Q.5 Find the errors -
s=”PURA VIDA”
Print(s[9]
+ s[9:15])
Ans: Here the error is : Sting index out of range.
Q.6
Find the output – if we give input as
“Hello”
Ans: output 1 output2
Skill Based Questions
Q.1 WAP to print following
pattern without using any nested loop.
#
# # Ans:
#
# #
#
# # #
#
# # # #
Q.2 WAP to
print the number of occurrences of a substring into a line.
Ans:
Q.3 WAP to check the
given string is palindrome or not.
Ans:
Q.4
WAP that:
o
Prompt
the user for a string o Extract all the digits from the string.
o
If there
are digits
§
Sum the
collected digits together.
§
Printout:
•
The
original string
•
The
digits
•
The sum
of the digits
o
If there
are no digits
§
Print the
original string
§
A message “Has no Digits” Ans:
