python random perf

deciles.py

from sys import argv


def fast():
    from numpy.random import uniform
    return uniform(0.0, 1.0, 1000000)


def slow():
    from random import uniform
    return [uniform(0.0, 1.0) for i in range(1000000)]


def print_deciles(variates):
    variates.sort()
    for i in range(0, 1000000, 100000):
        print variates[i]


if __name__ == '__main__':
    try:
        source = {'fast': fast,
                  'slow': slow}[argv[1]]
    except (KeyError, IndexError):
        print "Pick option 'fast' or 'slow'"
    else:
        print_deciles(source())