String Slicing in Python Exercise

String Slicing in Python is an important topic for Exams

What is String Slicing in Python?

String slicing in Python is to obtain a substring from the main string. Slice of string means part (substring) of string.

Syntax of String Slicing in Python

<String Name>[Start : Stop : Step]

Start : A position from where we have to start the cutting of string.

Stop : A position before what we have to cut the string.

Step : Number of characters to be skipped during string slicing in python.

NOTE : Position of stop is not included in the slicing
By default Start is 0
By default Step is 1

Solved Examples of String Slicing in Python

Q1. Write the Answers of the following in reference to given String:

str = “string slicing”

Str	s	t	r	i	n	g		s	l	i	c	i	n	g
+ve Index	0	1	2	3	4	5	6	7	8	9	10	11	12	13
-ve Index	-14	-13	-12	-11	-10	-9	-8	-7	-6	-5	-4	-3	-2	-1

a) print(str[3 : 6])

Here Slicing is starting from index 3 (from alphabet ‘i’) and ending position is before 6 (till alphabet ‘g’)

Output : ing

b) print(str[4 : 10])

Here Slicing is starting from index 4 (from alphabet ‘n’) and ending position is before 10 (till alphabet ‘i’)

Output : ng sli

c) print(str[ : ])

Output : string slicing

d) print (str[7 : ])

Output : slicing

e) print(str[-7 : ]

Output : slicing

f) print(str[-9 : -3]

Output : g slic

g) print(str[2 : 10 : 2])

Output : rn l

h) print(str[-1 : -1 : -1])

Output : Nothing will print

h) print(str[-11 : -4])

Output : ing sli

i) print(str[-14 : : -3])

Output : si in

j) print( str[ : : -3])

Output : gcsnt

Exercise of String Slicing – 1

Q1. Write the output of the following code

str = “Welcome to my blog”

a. print( str [3 : 18]

b. print ( str[ 2 : 14 : 2])

c. print( str [ : 7])

d. print( str[8 : -1 : 1])

e. print(str [-9 : -15])

f. print(str[0 : 9 : 3])

g. print(str[9 : 29 : 2])

h. print(str[-6 : -9 : -3])

i. print(str[-9 : -9 : -1])

j. print(str[8 : 25 : 3])

SOLUTIONS :

a) come to my blog

b) loet y

c) Welcome

d) to my blo

e) No Output

f) Wce

g) om lg

h) y

i) No Output

j) tmbg

Exercise of String Slicing – 2

Q1. Write the output of the following :

str = “String Slicing in Python”

a) print(str [13 : 18])

b) print(str[ -2 : -4 : -2])

c) print(str [12 : 18 : 2])

d) print(str[-17 : -1 : 1])

e) print(str[-6 : -20 : -2])

f) print(str[0 : 9 : 3])

g) print(str[19 : 29])

h) print(str[-6 : -9 : -3])

i) print(str[-9 : -0 : -1])

j) print(str[2 : 16 : 3])

SOLUTIONS :

a) g in

b) o

c) n n

d) Slicing in Pytho

e) Pn ncl

f) Si

g) ython

h) P

i) i gnicilS gnirt

j) rgli

Programs Based on String Slicing

Q1. Accept a string from the user and display the string with first character of each word Capital. (Without using inbuilt function)

Ans.

str = input("Enter any String")

str1 = ""

L=str.split()

for i in L:

       str1 = str1 + i[0].upper() + i[1:] +" "

print(str1)

Q2. Write a program to accept a string from the user and display n characters from the left of the string. (Accept n from the user)

Ans. 

str = input("Enter any string")

n=int(input("Enter number of characters to be extract from left"))

L = len(str)

if n > L :

      print("Enter less number of characters")

else:

  print(str[ : n ])

Q3. Write a program to reverse the string using slicing.

Ans.

str = "String Slicing in Python"
print(str[: : -1])

OUTPUT is:

nohtyP ni gnicilS gnirtS

Q4. Write a program to accept a string from the user and display n characters from the right of the string. (Accept n from the user)

Ans. 

str = "String Slicing in Python"
n = int(input("Enter number of characters"))
l = len(str)
print(str[l-n : : ])

Q5. Accept a String from the user and display first two characters of each word in same line separated by space.

Ans.

str = "String Slicing in Python"
word = str.split()
for i in word:
     print(i[0 : 2], end = " ")

OUTPUT :
St Sl in Py 

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