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# Example of string methods

# Initial string

text = " Hello World Python "

# Convert to lowercase

print(text.lower()) # Output: " hello world python "

# Convert to uppercase

print(text.upper()) # Output: " HELLO WORLD PYTHON "

# Capitalize each word

print(text.title()) # Output: " Hello World Python "

# Strip leading and trailing spaces

print(text.strip()) # Output: "Hello World Python"

# Replace 'Python' with 'Programming'

print(text.replace("Python", "Programming")) # Output: " Hello World Programming "

# Split the string into a list of words

print(text.split()) # Output: ['Hello', 'World', 'Python']

# Join a list of words into a single string with spaces

words = ['Hello', 'World', 'Python']

print(" ".join(words)) # Output: "Hello World Python"

# Find the position of 'World'

print(text.find("World")) # Output: 11

# Check if the string starts with ' Hello'

print(text.startswith(" Hello")) # Output: True

# Check if the string ends with 'Python'

print(text.endswith("Python ")) # Output: True

# Check if the string contains only digits

print("12345".isdigit()) # Output: True

# Check if the string contains only alphabetic characters

print("Hello".isalpha()) # Output: True

### Key Points

# - **Strings are immutable:** Methods that modify a string return a new string rather than changing the original string.

# - **Method chaining:** You can chain methods together for more complex operations. For example, `text.strip().upper().replace("WORLD", "EVERYONE")`.