title: BEGINNER Trying to debug a program that uses two other modules in order to run. Can't seem to define variables
body: <p>I am using Python IDLE. I am trying to create a Trip Planner that will look like this:</p>
  
  <pre><code>---------------------------
  Welcome to  the Trip    Planner
  ---------------------------
  Travel  Options
  --------------
  1.  Rome
  2.  Berlin
  3.  Vienna
  Where   would   you like    to  go? 2
  And how many    days    will    you be  staying in  Berlin? 5
  Your    trip    to  Berlin  has been    booked!
  
  
  
  Itinerary.txt
  Trip    Itinerary
  --------------
  Destination:    Berlin
  Length  of  stay:   5
  Cost:   $100.80
  </code></pre>
  
  <p>After   running,    this    program would   have    generated   a   text    file    named   itinerary.txt. What I seem to have trouble with is the currency.py which is not working for me. Python keeps telling me to define euro_rate and when I try to a numerous amount of problems pop up and it's frustrating for me because I am just a beginner. </p>
  
  <p>Here is what I have on part of the planner that might need some fixing...</p>
  
  <pre><code>def main():
      # Show destinations
      destinations.print_options()
  
      # Pick destination
      choice = destinations.get_choice()
  
      # Get destination info
      destination = destinations.get_info(choice)
  
      # Calculate currency exchange
      dollar_rate = currency.convert_dollars_to_euros(euro_rate)
  
      # Calculate cost
      cost = dollar_rate + length_of_stay
  </code></pre>
  
  <p>And my whole currency program looks like: </p>
  
  <pre><code>def convert_euros_to_dollars(euro_rate):
      return (euro_rate * 1.12)
  
  def convert_dollars_to_euros(dollar_rate):
      return (dollar_rate / 1.12)
  </code></pre>
  
  <p>At this point I am just lost and I need a little extra help.</p>