Steps to Format Strings in Python with Examples

📚 Quick Study Guide

• 🔍 String formatting allows you to insert variables into strings.
• ✨ Python offers several ways to format strings:
• %-formatting: Oldest method, uses the % operator.
• .format(): More modern, uses curly braces {} as placeholders.
• f-strings: (Python 3.6+) Simplest and fastest, prefix the string with f.
• 🔢 %-formatting Example: "Hello, %s!" % name
• 🧮 .format() Example: "Hello, {}!".format(name)
• 💡 f-string Example: f"Hello, {name}!"
• 📝 f-strings allow inline expressions: f"The square of 5 is {5*5}"

Practice Quiz

1. Question 1: Which of the following is the oldest method for string formatting in Python?
   1. .format()
   2. f-strings
   3. %-formatting
   4. Template strings
2. Question 2: What is the primary advantage of using f-strings?
   1. They are compatible with all Python versions.
   2. They are the most readable and concise.
   3. They are the most secure.
   4. They offer the most formatting options.
3. Question 3: Which of the following is the correct syntax for using .format()?
   1. "Hello, {name}".format(name=value)
   2. "Hello, %name%".format(name=value)
   3. "Hello, $name$".format(name=value)
   4. "Hello, ".format(name=value)
4. Question 4: How do you include a variable named 'age' inside an f-string?
   1. "My age is {age}"
   2. "My age is $age"
   3. "My age is %age%"
   4. "My age is "
5. Question 5: Which of the following is NOT a valid way to format strings in Python?
   1. %-formatting
   2. .format()
   3. f-strings
   4. %-string-formatting
6. Question 6: What will be the output of the following code: name = "Alice"; print(f"Hello, {name.upper()}!")?
   1. Hello, Alice!
   2. Hello, name.upper()!
   3. Hello, ALICE!
   4. Error
7. Question 7: Which formatting method allows you to perform inline calculations directly within the string?
   1. %-formatting
   2. .format()
   3. f-strings
   4. All of the above