title: Using user input to create dictionaries in Python
body: <p>I recently started learning Python and am busy going through the Codecademy tutorial for it. I just completed the tutorial where you create a program that determines averages of marks from dictionaries. Heres the current code:</p>
  
  <pre><code>lloyd = {
      "name": "Lloyd",
      "homework": [90.0, 97.0, 75.0, 92.0],
      "quizzes": [88.0, 40.0, 94.0],
      "tests": [75.0, 90.0]
  }
  alice = {
      "name": "Alice",
      "homework": [100.0, 92.0, 98.0, 100.0],
      "quizzes": [82.0, 83.0, 91.0],
      "tests": [89.0, 97.0]
  }
  tyler = {
      "name": "Tyler",
      "homework": [0.0, 87.0, 75.0, 22.0],
      "quizzes": [0.0, 75.0, 78.0],
      "tests": [100.0, 100.0]
  }
  
  class_list = [lloyd, alice, tyler]
  
  def average(numbers):
      total = sum(numbers)
      total = float(total)
      total = total / len(numbers)
      return total
  def get_average(student):
      homework = average(student["homework"])
      quizzes = average(student["quizzes"])
      tests = average(student["tests"])
      return homework * 0.1 + quizzes * 0.3 + tests * 0.6
  def get_class_average(students):
      results = []
      for student in students:
          results.append(get_average(student))
      return average(results)
  print get_class_average(class_list
  </code></pre>
  
  <p>But what I want to do as an extension is make it more user friendly by making the program ask the user to input <code>lloyd</code> in the first line as well as input all the values in the dictionary. Furthermore I'd like to make it so that the program generates a new dictionary every time the user inputs the name of the dictionary for example the <code>lloyd</code> on the first line. Then fill in <code>class_list</code> with all of the dictionaries. Lastly I want to make it so the user can also input the weightings of the marks in the line:</p>
  
  <p><code>return homework * 0.1 + quizzes * 0.3 + tests * 0.6</code></p>
  
  <p>I'm having trouble doing this so any help would be much appreciated.</p>