Examples of String Data in Python

📚 Quick Study Guide

• 🔍 What are Strings? Strings are sequences of characters used to represent text in Python. They are immutable, meaning they cannot be changed after creation.
• 🔗 Creating Strings: Strings can be created using single quotes (' '), double quotes (" "), or triple quotes (''' ''' or """ """) for multi-line strings.
• ✂️ String Slicing: Accessing parts of a string using indexing and slicing. For example, `string[start:end:step]`.
• ➕ String Concatenation: Combining strings using the `+` operator. For example, `string1 + string2`.
• 🔨 String Methods: Python provides numerous built-in methods for string manipulation, such as `.upper()`, `.lower()`, `.strip()`, `.replace()`, `.find()`, and `.split()`.
• 🔢 String Formatting: Using f-strings or the `.format()` method to insert variables into strings. For example, `f"Hello, {name}!"` or `"Hello, {}".format(name)`.
• 🧮 Escape Sequences: Special characters represented with a backslash, like `\n` (newline), `\t` (tab), and `\"` (double quote).

Practice Quiz

1. Which of the following is NOT a valid way to define a string in Python?
   1. 'Hello'
   2. "Hello"
   3. `Hello`
   4. """Hello"""
2. What will be the output of the following code? string = "Python"; print(string[2:5])
   1. Pyt
   2. tho
   3. thon
   4. yth
3. What does the `.strip()` method do to a string?
   1. Removes all spaces from the string.
   2. Removes leading and trailing whitespace from the string.
   3. Removes a specific character from the string.
   4. Converts the string to uppercase.
4. What is the result of the following operation? "Hello" + " " + "World"
   1. "HelloWorld"
   2. "Hello World"
   3. Error
   4. "Hello""World"
5. Which escape sequence represents a newline character?
   1. \t
   2. \n
   3. \r
   4. \b
6. What is the output of the following code? string = "Programming"; print(string.replace("g", "G"))
   1. ProGramminG
   2. ProgramminG
   3. ProGramming
   4. Error
7. Which string method converts all characters in a string to lowercase?
   1. .upper()
   2. .capitalize()
   3. .lower()
   4. .title()