pythoonzie DAY 11 !

🎥 Python Learning Vlog – String Handling Basics

Today I explored one of the most important topics in Python: String Handling. Strings are everywhere in programming because they help us store and manipulate text such as names, messages, and sentences.

First, I learned that in Python a string is a sequence of immutable Unicode characters. This means a string is made up of many small units called characters, and once a string is created its characters cannot be changed directly.

A character is the smallest unit of a program. Characters can be alphabets, numbers, symbols, or even emojis. Multiple characters combine to form words, and words combine to form meaningful program text.

Then I explored how computers represent characters internally using encoding systems.

Originally computers used ASCII (American Standard Code for Information Interchange), which supported only 128 characters. Later Latin encoding expanded this to 256 characters for European languages. But these systems were still limited.

To solve this problem, Unicode was introduced in 1991. Unicode is a universal character system that supports characters from almost every language in the world. Python uses Unicode to represent characters, which is why we can print characters from many languages.

For example, Python can display Unicode characters like this:

print("\u0915")
print("\u03B8")

These codes represent characters from different languages.

Next, I practiced string immutability. When a string value changes, Python does not modify the existing string. Instead, it creates a new string in memory.

I also learned about string concatenation, which means joining strings together:

first = "virat"
last = "kohli"
name = first + " " + last
print(name)

Here, Python combines the first and last name into a new string.

Another interesting concept is string replication, where a string is repeated multiple times:

s = "hello"
print(s * 6)

This prints the word "hello" six times.

I also discovered that strings are iterable, which means we can access each character one by one using a loop:

s = "python"
for i in s:
    print(i)

Finally, I learned how to count characters in a string using the len() function:

s = "python"
print(len(s))

This tells us how many characters are present in the string.

Overall, today’s learning helped me understand how Python stores text, how characters are represented, and how strings can be manipulated using operations like concatenation, replication, iteration, and length calculation.

Learning strings feels like unlocking the language of programming itself. Looking forward to exploring more Python concepts in the next coding vlog! 🚀

#python #Day11 #DataScience #bhartiinsan