Python String Slicing and Concatenation

What is Python String Slicing ?

Python String slicing is a method used to extract a portion of a string and creating a new string with the extracted part.

It's done by specifying a range of indices within square brackets following the string variable.

Slicing Syntax :-

string[start_index:end_index:step] where

start_index:- The index from which the slicing starts ( Included ).
end_index:- The index at which the slicing ends ( Excluded ).
step (optional):- The step value, specifying how many characters to skip. If not provided, it defaults to 1.

Slicing Examples :-

my_string = "Hello, World!"

# Slice from index 1 to index 5 (exclusive)
print(my_string[1:5])  # Output: "ello"

# Slice from index 7 to the end
print(my_string[7:])  # Output: "World!"

# Slice from the beginning to index 5 (exclusive)
print(my_string[:5])  # Output: "Hello"

# Slice every other character
print(my_string[::2])  # Output: "Hlo ol!"

# Reverse the string
print(my_string[::-1])  # Output: "!dlroW ,olleH"

What is Python String Concatenation?

String concatenation is the process of combining multiple strings into one.

In simpler terms, it's like gluing together pieces of text to form a longer piece of text.

In Python, you can concatenate strings using the + operator

Python String Concatenation Examples :-

first_name = "John"
last_name = "Doe"
full_name = first_name + " " + last_name
print(full_name)  # Output: "John Doe"

Python String concatenation is handy when you need to build dynamic strings,

such as constructing messages, forming file paths, or generating HTML/CSS code.

It's a fundamental operation in string manipulation and text processing tasks.