title: Specifying number of decimal places in Python
body: <p>When accepting user input with a decimal in Python I'm using:  </p>
  
  <pre><code>#will input meal subtotal  
  def input_meal():  
      mealPrice = input('Enter the meal subtotal: $')  
      mealPrice = float (mealPrice)  
      return mealPrice  
  </code></pre>
  
  <p>which returns exactly what is entered - say $43.45<br>
  but when using that value to calculate and display tax I'm using:  </p>
  
  <pre><code>#will calculate 6% tax  
  def calc_tax(mealPrice):  
      tax = mealPrice*.06  
      return tax
  </code></pre>
  
  <p>which returns a display of $ 2.607 using    </p>
  
  <pre><code>mealPrice = input_meal()
  tax = calc_tax(mealPrice)
  display_data(mealPrice, tax)  
  </code></pre>
  
  <p>How can I set that to $2.61 instead?<br>
  Forgive me, I realize this is basic stuff but they don't call it Intro for nothing...</p>
  
  <p>Thanks!</p>