CODEWITHSUNDEEP
pythonloopstime
Dustin
Dustin

Reputation: 6307

Python - Loop 100 times over a specified time

I'm looking at creating a randomizing script in Python to execute a loop over a specific amount of time. If I wanted to run a loop 100 times within 5 days at random times within that 5 days, what would be the best way to go about it?

Upvotes: 1

Views: 1358

Answers (3)

Paul Seeb
Paul Seeb

Reputation: 6156

You could "pre-plan" your randomized times to get the perfect fit in your time range. This assumes your loop time is insignificant in the scale of days (for 100 runs). You would need to add something if you wanted to be really exact

import random, time

def Rand_Run(func, time_range, num_runs):
    # time range passed as days / convert to seconds
    time_range = time_range*3600*24

    # create a list of random numbers and a scaling factor for your time period
    r_items = [random.random() for i in xrange(num_runs)]
    r_scale = time_range/sum(r_items)

    # create the list of time delays between runs
    r_time_delays = (r_item*r_scale for r_item in r_items)

    # run the function between random time delays
    for r_time_delay in r_time_delays:
        func()
        time.sleep(r_time_delay)

Upvotes: 1

user4815162342
user4815162342

Reputation: 155236

Pick a hundred uniformly distributed random points along the interval and sleep between them:

import random, time

DURATION = 5 * 86400  # five days
EXECS = 100

now = time.time()
points = sorted(random.random() * DURATION + now
                for i in xrange(EXECS))

for p in points:
   now = time.time()
   if p > now:
       time.sleep(p - now)
   # run your loop here

Upvotes: 4

zen
zen

Reputation: 122

NOT Python, but some idea:

duration = 5*24*60*60 //duration in seconds
for i = 0 to 99
    array(i)=rand()*duration
end
sort array
counter=0
while time_elapsed<duration
    if (time_elapsed>=array(counter))
        DO SOMETHING
        counter=counter+1
    end
end

Upvotes: 0

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