List and Arrays

• What is the purpose of variables in programming?


  To store one data value at a time
• Why would creating separate variables for each age be confusing?


  Because it would take up space and become unmanageable
• What is a list in programming?


  A data structure that allows storing multiple data values under one name
• How does an array differ from a regular list in Python?


  An array is a type of list that requires all values to be of the same data type
• How do you create an array in Python?


  By surrounding all values with square brackets []
• What is the syntax to create an array of names in Python?


  names = ['Ethan', 'Mary', 'Bob', 'Alice']
• What is the syntax to create an array of ages in Python?


  ages = [16, 9, 22, 8]
• What does the index number of an array start from?


  0
• How would you access the third name in the names array?


  By using print(names[2])
• How would you access the second age in the ages array?


  By using print(ages[1])
• What method is used to add a new value to the end of a list in Python?


  The append method
• How would you add "MC Chillerts" to the names array?


  By using names.append("MC Chillerts")
• What are the key characteristics of lists and arrays in Python?


  • Lists store multiple data values under one name.
  • Arrays are a type of list with the same data type for all values.
  • Arrays are created using square brackets [].
  • Indexing starts from 0.
  • The append method adds values to the end of a list.