💻 Python Strings Methods

🔹 1. What is a String?

• A string is a group of text or characters.

• In Python, we use quotes ('' or "") to make a string.

name = "Safia"
greeting = 'Hello World'

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🔹 2. How to Create a String?

s1 = "Hello"
s2 = 'Python'
s3 = """With triple quotes,
you can write multi-line strings."""

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🔹 3. String Indexing (Access Characters)

• Indexing starts from 0

text = "Python"
print(text[0])  # Output: P
print(text[5])  # Output: n

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🔹 4. String Slicing (Access Part of String)

text = "Safia"
print(text[0:3])  # Output: Saf
print(text[:2])   # Output: Sa
print(text[2:])   # Output: fia

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🔹 5. Useful String Methods (Functions)

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🔹 6. String Formatting (Add Variables in String)

name = "Safia"
age = 20
print(f"My name is {name} and I am {age} years old.")

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🔹 7. Escape Characters

print("Hello\nWorld")
print("It\'s me, Safia")

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🔹 8. Strings are Immutable

• Strings can’t be changed directly.

name = "Safia"
# name[0] = "J"  ❌ Error
name = "Jafia"   ✅ Make a new string

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🔹 9. Looping Through a String

for char in "Safia":
    print(char)

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🔹 10. Check if Something Exists in String

text = "Python is awesome"

print("Python" in text)     # True
print("Java" not in text)   # True

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