title: Check uppercase and lowercase input in IF statement
body: <p>When I go to input 'T' or 't' to go into the triangle prompts, regardless of what I input, the program immediately goes into the calculation for circle. </p>
  
  <p>When I change the IF statement to only accept one character, such as lowercase 't' or 'c' it works randomly, but I want to ensure that the user can input upper or lowercase. </p>
  
  <p>What am I doing wrong? I am using <strong>python 2</strong>. </p>
  
  <pre><code>#This program calculates the area and other information for 
  geometric shapes 
  # python AreaCalculator.py
  option = raw_input("Enter C for circle or T for triangle ")
  print option #this is just to ensure the program is updating the 
  variable
  if option == 'c' or 'C':
      radius = float(raw_input("Enter the radius of your circle "))
      area = 3.14159 * radius**2
      print "The area of your circle is %f units" % (area)
  elif option == 't' or 'T':
      base = float(raw_input("Enter base "))
      height = float(raw_input("Enter height  "))
      area = .5*base*height
      print "The area of the triangle is %f units" % (area)
  else:
      print "Invalid"
  print "Program complete, please come again"
  </code></pre>
  
  <p>The result from inputting T or t into option = raw_input just puts me into the if statement pertaining to the circle</p>