Python子流程Exec格式错误

Question

Sorry if this question is dumb. I am using python subprocess statement to call a .bat file in Ubuntu (Natty 11.04), however, I got error messages:

Traceback (most recent call last):
  File "pfam_picloud.py", line 40, in <module>
    a=subprocess.Popen(src2, shell=0)
  File "/usr/lib/python2.7/subprocess.py", line 672, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1213, in _execute_child
    raise child_exception

run this python file

$python pfam_picloud.py

Python code (pfam_picloud.py)

#!/usr/bin/python
#
met="wTest.dvf"
run="run_pfam.bat"
inp="pfam_input.PFA"
import os
import stat
import shutil
import subprocess
import string
import random
# Generate a random ID for file save
def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
    return ''.join(random.choice(chars) for x in range(size))
name_temp=id_generator()
cwd=os.getcwd()
src=cwd
src1=cwd+'/'+name_temp
if not os.path.exists(src1):
    os.makedirs(src1)
else:
    shutil.rmtree(src1)
    os.makedirs(src1)
##
shutil.copy(src+"/"+run,src1)
shutil.copy(src+"/"+met,src1)
shutil.copy(cwd+"/pfam_pi.exe",src1)
shutil.copy(src+"/"+inp,src1)
#
src2=src1+"/run_pfam.bat"
os.chdir(src1)
a=subprocess.Popen(src2, shell=0)
a.wait()

bash file (run_pfam.bat)

#!/bin/sh
./pfam_pi.exe pfam_input.PFA

I can successfully run this bash file in Ubuntu. So I guess, I messed up something in my Python script. Could anyone give me some suggestions? Thanks for any inputs.

EDIT

the file pfam_pi.exe is a Linux executable. I compiled it in Ubuntu. Sorry for the confusion.

update

Well, I got different types of error now. 1. With #!/bin/sh , it said No such file or directory . 2. With /bin/sh , it said exec format error . 3. If I sent everything as arguments a=subprocess.Popen(['./pfam_pi.exe', 'inp', 'src1'], shell=0) , it said end of line symbol error

Answer 1

Since feature requests to mark a comment as an answer remain declined, I copy the above solution here.

@Ellioh: Thanks for your comments. I found once I changed the shell=1, problem is solved. – tao.hong

Answer 2

Try running wine (you should have it installed) and pass pfam_pi.exe to it as a parameter. Maybe pfam_pi.exe is not a Linux executable. :-) Certainly, executable file extensions are not meaningful on Linux, but probably it really is a Windows program, otherwise I hardly can imagine it named pfam_pi.exe .

However, if it is a Linux executable, note subprocess.Popen accepts a list of args (the first element is the program itself), not a command line:

>>> import shlex, subprocess
>>> command_line = raw_input()
/bin/vikings -input eggs.txt -output "spam spam.txt" -cmd "echo '$MONEY'"
>>> args = shlex.split(command_line)
>>> print args
['/bin/vikings', '-input', 'eggs.txt', '-output', 'spam spam.txt', '-cmd', "echo '$MONEY'"]
>>> p = subprocess.Popen(args) # Success!