# picking random numbers from a list
# Python2 syntax
 
def pick_rand(rand_list, start=-1, incr=1):
    """
    closure based function that cycles through rand_list one index
    at a time for each call, index resets to zero at end of list
    """
    def inner():
        inner.index += incr
        if inner.index >= len(rand_list):
            inner.index = 0
        return rand_list[inner.index]
    inner.index = start
    return inner   
 
# random number list of 100 numbers from 0 to 99
# created by timing user input events
rand_list = [
6, 40, 3, 6, 93, 81, 84, 56, 43, 31, 34, 21, 9, 96, 84, 87, 6, 9,
12, 0, 87, 59, 31, 18, 6, 9, 96, 68, 56, 59, 31, 3, 75, 62, 34, 21, 
9, 96, 68, 56, 43, 0, 71, 59, 31, 34, 6, 78, 65, 37, 25, 96, 84, 71, 
59, 46, 34, 6, 9, 81, 53, 40, 28, 84, 56, 43, 65, 84, 87, 59, 62, 
50, 21, 9, 96, 84, 71, 59, 46, 18, 90, 93, 81, 84, 71, 59, 31, 34, 
53, 40, 46, 3, 75, 75, 50, 6, 65, 21, 87, 15
]
 
# testing only ...
print len(rand_list)  # 100
print "average = %d" % (sum(rand_list)//len(rand_list))  # 48
 
# needed!
rand = pick_rand(rand_list)
 
# show 10 random numbers
for k in range(10):
    print rand(),
 
print
 
# show another 10 random numbers
for k in range(10):
    print rand(),

# a time based random number generator 
# that uses the random time between a user's input events
# to create a list of random numbers
# Python2 syntax
 
import time
 
def random_number(low, high):
    """
    a time based random number generator 
    uses the random time between a user's input events
    returns an integer between low and high-1
    """
    return int(low + int(time.time()*1000) % (high - low))
 
low = 0
high = 100
count = 0
rand_list = []
print "Press enter for a random number (q to quit):"
while True:
    sel = raw_input()
    if sel == 'q':
        break
    rand = random_number(low, high)
    rand_list.append(rand)
    # give user feedback
    print "%d --> %d" % (count, rand)
    count += 1
 
print rand_list
 
"""my rand_list 0f 100 random numbers between 0 and 99 -->
[6, 40, 3, 6, 93, 81, 84, 56, 43, 31, 34, 21, 9, 96, 84, 87, 6, 9, 
12, 0, 87, 59, 31, 18, 6, 9, 96, 68, 56, 59, 31, 3, 75, 62, 34, 21, 
9, 96, 68, 56, 43, 0, 71, 59, 31, 34, 6, 78, 65, 37, 25, 96, 84, 71, 
59, 46, 34, 6, 9, 81, 53, 40, 28, 84, 56, 43, 65, 84, 87, 59, 62, 
50, 21, 9, 96, 84, 71, 59, 46, 18, 90, 93, 81, 84, 71, 59, 31, 34, 
53, 40, 46, 3, 75, 75, 50, 6, 65, 21, 87, 15]
"""