--- title: String Methods slug: string-methods category: strings-deep order: 1 difficulty: beginner estimatedMinutes: 15 prerequisites: - strings-numbers tags: - strings - methods - text-processing --- # String Methods Python strings come with dozens of built-in methods for transforming and searching text. ## Case Methods text = "Hello, World!" print(text.upper()) # HELLO, WORLD! print(text.lower()) # hello, world! print(text.title()) # Hello, World! print(text.swapcase()) # hELLO, wORLD! ## Searching and Checking message = "Python is awesome" print(message.startswith("Python")) # True print(message.endswith("awesome")) # True print(message.find("is")) # 7 (index) print(message.count("o")) # 2 print("awesome" in message) # True ## Stripping Whitespace messy = " hello " print(f"'{messy.strip()}'") # 'hello' print(f"'{messy.lstrip()}'") # 'hello ' print(f"'{messy.rstrip()}'") # ' hello' ## Replacing and Splitting sentence = "I like cats and cats like me" print(sentence.replace("cats", "dogs")) words = "apple,banana,cherry" print(words.split(",")) parts = ["hello", "world"] print(" ".join(parts)) ## Challenges Convert the string `"hello python"` to uppercase and print it. text = "hello python" Use the `.upper()` method. text = "hello python" print(text.upper()) Split the string `"apple-banana-cherry"` on the `-` character and print the resulting list. fruits = "apple-banana-cherry" Use `.split("-")` to split on the dash character. fruits = "apple-banana-cherry" print(fruits.split("-")) Replace `"Java"` with `"Python"` in the string below and print the result. text = "I love Java programming" Use `.replace("Java", "Python")` text = "I love Java programming" print(text.replace("Java", "Python"))