PeterHarding at 10:54, 18 October 2010

2010-10-18T10:54:17Z

← Older revision		Revision as of 20:54, 18 October 2010
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	=Timers=		=Timers=

			Also see: http://pleac.sourceforge.net/pleac_python/datesandtimes.html

	<pre>		<pre>

PeterHarding: Created page with '=Timers=

 #-----------------------------  # High Resolution Timers  t1 = time.clock() # Do Stuff Here t2 = time.clock() print t2 - t1  # 2.27236813618 # Accuracy will depen...'

2010-10-18T10:53:55Z

Created page with '=Timers= <pre> #----------------------------- # High Resolution Timers t1 = time.clock() # Do Stuff Here t2 = time.clock() print t2 - t1 # 2.27236813618 # Accuracy will depen...'

New page

=Timers=

<pre>
#-----------------------------
# High Resolution Timers

t1 = time.clock()
# Do Stuff Here
t2 = time.clock()
print t2 - t1

# 2.27236813618
# Accuracy will depend on platform and OS,
# but time.clock() uses the most accurate timer it can

time.clock(); time.clock()
# 174485.51365466841
# 174485.55702610247

#-----------------------------
# Also useful;
import timeit
code = '[x for x in range(10) if x % 2 == 0]'
eval(code)
# [0, 2, 4, 6, 8]

t = timeit.Timer(code)
print "10,000 repeats of that code takes:", t.timeit(10000), "seconds"
print "1,000,000 repeats of that code takes:", t.timeit(), "seconds"

# 10,000 repeats of that code takes: 0.128238644856 seconds
# 1,000,000 repeats of that code takes: 12.5396490336 seconds

#-----------------------------
import timeit
code = 'import random; l = random.sample(xrange(10000000), 1000); l.sort()'
t = timeit.Timer(code)

print "Create a list of a thousand random numbers. Sort the list. Repeated a thousand times."
print "Average Time:", t.timeit(1000) / 1000
# Time taken: 5.24391507859

Short Sleeps

#-----------------------------
# Short Sleeps

seconds = 3.1
time.sleep(seconds)
print "boo"
</pre>

[[Category:Python]]
[[Category:Examples]]

Python - timers - Revision history

PeterHarding at 10:54, 18 October 2010

PeterHarding: Created page with '=Timers=
#----------------------------- # High Resolution Timers t1 = time.clock() # Do Stuff Here t2 = time.clock() print t2 - t1 # 2.27236813618 # Accuracy will depen...'