DESCRIPTION

Students:  Please keep in mind the OMSI rules.  Save your files often,
make sure OMSI fills your entire screen at all times, etc.  Remember
that clicking CopyQtoA will copy the entire question box to the answer
box.

In questions involving code which will PARTIALLY be given to you in the
question specs, you may need add new lines.  There may not be
information given as to where the lines should be inserted.

If a question includes test code, make sure to include it in your
submission

Do not answer any question with simulation code unless this is specified. 

MAKE SURE TO RUN THE CODE IN PROBLEMS INVOLVING CODE!  Hit the OMSI
Submit and Run button.

QUESTION -ext .py -run 'python omsi_answer1.py

Write a function that makes an iterator from a dictionary.

class diter:

dt = diter({'a':5, 'b':12, 'c':13})
for delt in dt: print delt  # prints 5,12,13 (maybe different order)

QUESTION -ext .py -run 'python omsi_answer2.py

In the code below, threads cooperate in finding the sum of numbers in a
queue.  A thread repeatedly gets a number from the queue, adding it to
the queue's private sum.  When the queue becomes exhausted, the thread
adds its private sum to the global sum.

from Queue import Queue
import thread

class glbls:
   Q = Queue()
   numThreads = 2
   sum = 0

def dowork(tnum):
   sum = 0
   
   glbls.sum += sum

glbls.top = 10000
for i in range(glbls.top+1): glbls.Q.put(i)
thread.start_new_thread(dowork,(1,))
thread.start_new_thread(dowork,(2,))
while glbls.numThreads > 0: pass
print glbls.sum