What is Strings?

A string is a data type that stores a sequence of characters.

1. Creating a String: You can create a string by enclosing text in single (') or double (") quotes.

   name = "Tarif"
   greeting = 'Moshi Moshi'
   

2. Multiline Strings: Use triple quotes (''' or """) to create strings that span multiple lines.

   message = """This is a
   multiline string."""
   

3. Next Line: By using \\n we can go to the next line.

   text = ("Tarif is a good boy.\\nTarif is learning Python.")
   
   #Output -- 
   
   Tarif is a good boy.
   Tarif is learning Python.
   

4. Concatenation: You can combine strings using the + operator.

   full_name = "Md"
   second_name = "Tarif"
   print(full_name + second_name)
   
   # Output:
   MdTarif
   

5. Length: Use the len() function to get the length of a string.

   name = "Tarif"
   print(len(name))
   
   # Output: 5
   

6. Indexing: You can access characters in a string using an index, with the first character at index 0.

   word = "Python"
   print(word[0])
   # Output: 'P'
   
   print(word[-1])
   # Output: 'n' (negative index starts from the end)
   

7. Slicing: You can get a substring by slicing the string.

   P y t h o n
   0 1 2 3 4 5
   
   word = "Python"
   
   print(word[0:2])  # Output: 'Py'
   print(word[2:])   # Output: 'thon'
   print(word[:])    # Output: 'Python'
   

8. In function: It checks whether the word is in the sentence or not.

   my_food = "I like pizza and pasta"
   result = 'salad' in my_food        # Output: False
   
   my_food = "samosa, jalebi"
   answer = 'apple' not in my_food    # Output: True
   

9. Replace: It is used to replace occurrences of a substring within a string with another substring.

   text = "I like apples"
   ans = text.replace("apples", "bananas")
   
   print(ans)  # Output: "I like bananas"