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import os
import psyco
def time(fn, *args):
"Measure the execution time of fn(*args)."
import time, traceback
begin = time.clock()
try:
result = fn(*args)
except:
end = time.clock()
traceback.print_exc()
result = '<exception>'
else:
end = time.clock()
return result, end-begin
ZERO = 0
def f1(n):
"Arbitrary test function."
i = 0
x = 1
while i<n:
j = ZERO
while j<=i:
j = j + 1
x = x + (i&j)
i = i + 1
return x
def f2(x):
"Trivial function."
return x*2
def f3(n):
"Prints f2(x) on all non-null items of the sequence n."
for x in n:
if x == 0:
continue
print f2(x)
def f4(filelist):
"Count all characters of all files whose names are in filelist."
result = [0]*256
for filename in filelist:
if filename[:4] == 'BIN:':
f = open(filename[4:], 'rb')
else:
f = open(filename, 'r')
for line in f:
for c in line:
k = ord(c)
result[k] += 1
f.close()
d = {}
for i in range(256):
if result[i]:
d[chr(i)] = result[i]
return d
def f5(filelist):
"Same as f4() but completely loads the files in memory."
result = [0]*256
for filename in filelist:
if filename[:4] == 'BIN:':
f = open(filename[4:], 'rb')
else:
f = open(filename, 'r')
for c in f.read():
k = ord(c)
result[k] += 1
f.close()
d = {}
for i in range(256):
if result[i]:
d[chr(i)] = result[i]
return d
def f6(n, p):
"Computes the factorial of n modulo p."
factorial = 1
for i in range(2, n+1):
factorial = (factorial * i) % p
return factorial
def mandelbrot(c):
z = 0j
for i in xrange(1000):
z = z*z + c
if abs(z) > 2:
if i > 126-33: i = 126-33
return chr(33+i)
return " "
def f7(start, end, step):
"Computes the Mandelbrot set. All args are complex numbers."
width = int((end.real - start.real) / step.real)
while start.imag < end.imag:
line = [mandelbrot(start + n*step.real) for n in range(width)]
print ''.join(line)
start += complex(0, step.imag)
def mandelbrotbis(c_r, c_i):
z_r = z_i = 0.0
for i in xrange(1000):
z_r, z_i = z_r*z_r-z_i*z_i + c_r, 2*z_r*z_i + c_i
if z_r*z_r+z_i*z_i > 4.0:
if i > 126-33: i = 126-33
return chr(33+i)
return " "
def f7bis((start_r, start_i), (end_r, end_i), (step_r, step_i)):
"Computes the Mandelbrot set. All args are (real, imag) tuples."
width = int((end_r - start_r) / step_r)
while start_i < end_i:
line = [mandelbrotbis(start_r + n*step_r, start_i) for n in range(width)]
print ''.join(line)
start_i += step_i
def f8():
try:
x = 1.0 / 0.0
#except StandardError, e:
# print "in except clause:", e
finally:
print "in finally clause"
x = 5
print "x is now", x
def f9(n):
for i in range(n):
print i,
print
def f10():
apply(f9, (50,))
def f11(n):
def subtracter(x, y=n):
return x-y
return subtracter(1000)
ALLTESTS = []
def go(f, *args):
print '-'*78
v1, t1 = time(psyco.proxy(f), *args)
print v1
print '^^^ computed by Psyco in %s seconds' % t1
v2, t2 = time(f, *args)
if v1 == v2:
if t1 and t2:
ok = '%.2f times faster' % (t2/float(t1))
s = ', Psyco is %s' % ok
else:
ok = s = ''
print 'Python got the same result in %s seconds%s' % (t2, s)
else:
print v2
print '^^^ by Python in %s seconds' % t2
print '*'*78
print '!!! different results !!!'
ok = 'DIFFERENT RESULTS'
ALLTESTS.append((f.func_name,t2,t1,ok))
def print_results():
import sys
print
print '='*23, 'Summary (Python %d.%d.%d)' % sys.version_info[:3], '='*23
format = '%-15s %-15s %-15s %s'
print format % ('function', 'Python time', 'Psyco time', '')
for r in ALLTESTS:
print format % r
def go1(arg=2117):
go(f1, arg)
FILEPATH = '../c'
FILELIST = [os.path.join(FILEPATH, s) for s in os.listdir(FILEPATH)]
FILELIST = [s for s in FILELIST if os.path.isfile(s) and s!='psyco.dump']
def go4(arg=FILELIST):
go(f4, arg)
def go5(arg=FILELIST):
go(f5, arg)
def go6(n=100000, p=100000000000001L):
go(f6, n, p)
def go7(start=-2-1j, end=1+1j, step=0.04+0.08j):
go(f7, start, end, step)
def go7bis(start=(-2.0, -1.0), end=(1.0, 1.0), step=(0.04, 0.08)):
go(f7bis, start, end, step)
if __name__ == "__main__":
go(f11, 50)
go1()
go4()
go5()
go6()
go7()
go7bis()
go(f10)
psyco.dumpcodebuf()
print_results()
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