On Jun 19, 5:14 am, Matt Nordhoff <[EMAIL PROTECTED]> wrote:
> Mensanator wrote:
> You're supposed to use the subprocess module.
Yeah, I know, but I couldn't get it to work the last
time I tried it.
>
> In this case, something like:
>
> import subprocess
> factor_program = ['factor!', '-d200']
>
> ...
>
> p = subprocess.Popen(factor_program + [n], stdout=subprocess.PIPE)
> p.wait() # wait for it to finish; not sure how necessary it is
> the_output = p.stdout.readlines()
Just like how this doesn't work either:
Traceback (most recent call last):
File "C:\Program Files\PyGTK\Python\user\factor_timing.py", line 26,
in <module>
p = subprocess.Popen(factor_program + [the_comp[1]],
stdout=subprocess.PIPE)
File "C:\Program Files\PyGTK\Python\lib\subprocess.py", line 586, in
__init__
errread, errwrite) = self._get_handles(stdin, stdout, stderr)
File "C:\Program Files\PyGTK\Python\lib\subprocess.py", line 681, in
_get_handles
p2cread = self._make_inheritable(p2cread)
File "C:\Program Files\PyGTK\Python\lib\subprocess.py", line 722, in
_make_inheritable
DUPLICATE_SAME_ACCESS)
TypeError: an integer is required
>
> See subprocess's documentation [1], which includes guides on replacing
> os.popen* and other functions with it.
I have seen it - it's utterly incomprehensible.
What do you suppose you did wrong?
The complete program (with the deprecated code commented out -
which works, BTW):
#import os
import time
import subprocess
#factor_program = 'factor! -d200 '
factor_program = ['factor!','-d200']
the_composites =
[['COMPOSITE_FACTOR','50818429800343305993022114330311033271249313957919046352679206262204589342623811236647989889145173098650749']]
the_primes = []
the_intractables = []
phase = 1
the_times = []
while the_composites:
print "="*40
print 'Phase',phase
the_comp = the_composites.pop(0)
print the_comp
print
the_times.append(time.time()) # time how long it takes to run
factor!.exe
#the_output = os.popen(factor_program+the_comp[1]).readlines()
# change to subprocess
p = subprocess.Popen(factor_program + [the_comp[1]],
stdout=subprocess.PIPE)
p.wait()
the_output = p.stdout.readlines()
the_times.append(time.time())
new_factors = [i.split() for i in the_output]
for i in new_factors: print i
print
if len(new_factors) == 1:
if new_factors[0][0] == 'PRIME_FACTOR':
the_primes.append([new_factors[0][0],long(new_factors[0][1])])
else:
the_intractables.append([new_factors[0][0],long(new_factors[0]
[1])])
new_factors.pop()
while new_factors:
j = new_factors.pop(0)
if j[0] == 'PRIME_FACTOR':
the_primes.append([j[0],long(j[1])])
else:
the_composites.append(j)
print the_times[phase] - the_times[phase-1],'seconds'
phase += 1
print "="*40
print
print 'Factoring complete'
print
the_primes.sort()
the_intractables.sort()
the_primes.extend(the_intractables)
for i in the_primes:
print i[0],i[1]
print
print "="*40
When working, it produces:
## ========================================
## Phase 1
## ['COMPOSITE_FACTOR',
'50818429800343305993022114330311033271249313957919046352679206262204589342623811236647989889145173098650749']
##
## ['PRIME_FACTOR', '37']
## ['PRIME_FACTOR', '43']
## ['PRIME_FACTOR', '167']
## ['COMPOSITE_FACTOR', '507787751']
## ['PRIME_FACTOR', '69847']
## ['PRIME_FACTOR', '30697']
## ['PRIME_FACTOR', '89017']
## ['PRIME_FACTOR', '3478697']
## ['PRIME_FACTOR', '434593']
## ['PRIME_FACTOR', '49998841']
## ['PRIME_FACTOR', '161610704597143']
## ['PRIME_FACTOR', '14064370273']
## ['COMPOSITE_FACTOR', '963039394703598565337297']
## ['PRIME_FACTOR', '11927295803']
##
## 0.860000133514 seconds
## ========================================
## Phase 2
## ['COMPOSITE_FACTOR', '507787751']
##
## ['PRIME_FACTOR', '29819']
## ['PRIME_FACTOR', '17029']
##
## 0.0780000686646 seconds
## ========================================
## Phase 3
## ['COMPOSITE_FACTOR', '963039394703598565337297']
##
## ['PRIME_FACTOR', '518069464441']
## ['PRIME_FACTOR', '1858900129817']
##
## 0.0469999313354 seconds
## ========================================
##
## Factoring complete
##
## PRIME_FACTOR 37
## PRIME_FACTOR 43
## PRIME_FACTOR 167
## PRIME_FACTOR 17029
## PRIME_FACTOR 29819
## PRIME_FACTOR 30697
## PRIME_FACTOR 69847
## PRIME_FACTOR 89017
## PRIME_FACTOR 434593
## PRIME_FACTOR 3478697
## PRIME_FACTOR 49998841
## PRIME_FACTOR 11927295803
## PRIME_FACTOR 14064370273
## PRIME_FACTOR 518069464441
## PRIME_FACTOR 1858900129817
## PRIME_FACTOR 161610704597143
##
## ========================================
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