Created by Bhawani Shankar

Contact me via email =>[email protected]

Day 1:

Topics to be covered => Printing , Commenting , Debugging , String Manipulation and Variables

// First python program 
# print("Shree ganesh")
print("Day 1 - Python Print Function")
print("print('What to print')") 
 # Both inside string and outside string will have different inverted comma

Take care of space

String manipulation :

1. Creating Strings: In Python, you can create strings using single quotes or double quotes.

   greeting = 'Hello'
   name = "Alice"
   
   

2. Concatenation: Joining strings together is called concatenation. You can use the '+' operator.

   full_greeting = greeting + ' ' + name
   print(full_greeting)  # Output: Hello Alice
   
   

3. String Length: To find the length of a string, use the len() function.

   print(len(name))  # Output: 5
   
   

4. Accessing Characters: You can access individual characters in a string using indexing. Remember, indexing starts at 0.

   first_letter = name[0]
   print(first_letter)  # Output: A
   
   

5. Slicing: You can extract parts of a string using slicing.

   print(name[1:3])  # Output: li
   
   

6. String Methods: Python provides many built-in methods for string manipulation. Here are a few common ones:

   a. Upper and Lower case:

   print(name.upper())  # Output: ALICE
   print(name.lower())  # Output: alice
   
   

   b. Replace:

   sentence = "The quick brown fox"
   new_sentence = sentence.replace("fox", "dog")
   print(new_sentence)  # Output: The quick brown dog
   
   

   c. Split:

   words = sentence.split()
   print(words)  # Output: ['The', 'quick', 'brown', 'fox']
   
   

   d. Join:

   joined = "-".join(words)  # join them using -
   # opposite of split() which breaks a string into parts, join() combines a list of strings into a single string.
   print(joined)  # Output: The-quick-brown-fox
   
   

7. Formatting: You can format strings using f-strings (available in Python 3.6+):

   age = 25
   #You start the string with the letter 'f' or 'F' before the opening quotation mark.
   #Inside the string, you can put expressions in curly braces {}.
   #Python will evaluate these expressions and convert them to strings.
   formatted = f"My name is {name} and I am {age} years old"  # It works like teplate literal in javascript
   print(formatted)  # Output: My name is Alice and I am 25 years old
   
   

The input() function in Python is a built-in function used to get user input from the command line.

name = input("What is your name? ")
print(f"Hello, {name}!")