text = "  Hello, Python!  "

print(text.upper())        # HELLO, PYTHON!
print(text.lower())        # hello, python!
print(text.capitalize())   # Hello, python!
print(text.strip())        # Hello, Python!

words = text.split(", ")   # ['Hello', 'Python!']
new_text = text.replace("Python", "world") # Hello, world!

index = text.find("Python") # 7
length = len(text)          # 17