Assignment2: Python Strings
● Accessing value sin strings
● Updating strings
● String special operators
● Concatenation
● Repetition
Q1) write a python programming Accessing values in strings.
Ans:-
my_string = “Hello, World!”
# Accessing characters by index
first_char = my_string[0] # First character
fifth_char = my_string[4] # Fifth character
last_char = my_string[-1] # Last character
Q2) write a python program updating in strings.
Ans:-
# Basic Python Program for String Updates
# Initial string
initial_string = “Hello, World!”
# Update 1: Appending text to the string
updated_string = initial_string + ” How are you?”
print(“After appending text:”, updated_string)
# Update 2: Replacing part of the string
# Replace ‘World’ with ‘Python’
replaced_string = updated_string.replace(“World”, “Python”)
print(“After replacing text:”, replaced_string)
# Update 3: Changing the entire string
new_string = “This is a completely new string.”
print(“After changing the entire string:”, new_string)
# Update 4: Converting string to uppercase
uppercase_string = new_string.upper()
print(“After converting to uppercase:”, uppercase_string)
# Update 5: Converting string to lowercase
lowercase_string = new_string.lower()
print(“After converting to lowercase:”, lowercase_string)
Q3) write a python program String special operators in strings.
Ans:-
# Define two example strings
string1 = “Hello”
string2 = “World”
# 1. Concatenation (+)
concatenated_string = string1 + ” ” + string2
print(“Concatenation: ” + concatenated_string) # Output: Hello World
# 2. Repetition (*)
repeated_string = string1 * 3
print(“Repetition: ” + repeated_string) # Output: HelloHelloHello
# 3. Membership (in)
if “Hell” in string1:
print(“‘Hell’ is in string1”) # Output: ‘Hell’ is in string1
# 4. Not in (not in)
if “hell” not in string1:
print(“‘hell’ is not in string1”) # Output: ‘hell’ is not in string1 (case-sensitive)
# 5. Slicing ([])
slice_string = string1[1:4] # ‘ell’
print(“Sliced string: ” + slice_string) # Output: ell
# 6. Range slicing ([start:end])
range_slice = string2[1:4] # ‘orl’
print(“Range sliced string: ” + range_slice) # Output: orl
# 7. String formatting (%)
formatted_string = “%s %s!” % (string1, string2)
print(“Formatted string: ” + formatted_string) # Output: Hello World!
