[Tutor] help with erros using subprocess module

[Bo Yang]

Jerome Jabson 写道:
> Hi,
>
> I've been trying to write a wrapper around some shells
> scripts using the subprocess module. But I'm getting
> errors I quite don't know how to debug. I've only been
> writing Python for a few months and starting processes
> are new to me. Here's my code:
>
> import os
> import re
> import subprocess
>
> ####################
> #### Definition ####
> ####################
>
> def proc(cmd_in):
>    cmd = cmd_in
>    os.chdir("/home/qauser/jerome")
>    outFile = os.path.join(os.curdir, "output.log")
>    outptr = file(outFile, "w")
>    errFile = os.path.join(os.curdir, "error.log")
>    errptr = file(errFile, "w")
>    retval = subprocess.call(cmd, 0, None, None,
> outptr, errptr)
>    errptr.close()
>    outptr.close()
>    if not retval == 0:
>       errptr = file(errFile, "r")
>       errData = errptr.read()
>       errptr.close()
>       raise Exception("Error executing command: " +
> repr(errData))
>
> def setup():
>    print "=== Starting Setup ==="
>    proc("/home/qauser/jerome/qaSetup.sh")
>    print "=== Setup  Complete ==="
>
> def run_junit():
>    file_in =
> open("/home/qauser/automation/testdata/junit_master_file",
> "r")
>   
Could you put the contents in the junit_master_file here ?
Are the first field in every line where the cmd name locates contain the 
full path to the
command ?
>    match = re.compile('#+')
>    work_list = []
>    for line in file_in:
>       work = line
>       work = work.rstrip('\n')
>       if match.search(work):
>          found = False
>       else:
>          found = True
>       if found == True:
>          work_list = work.split(',')
>          arg1 = work_list[0]
>          arg2 = work_list[1]
>          arg3 = work_list[2]
>          arg4 = work_list[3]
>          cmd = "/home/qauser/jerome/qaRun.sh %s %s %s
> %s"
>          cmdstr = cmd % (arg1,arg2,arg3,arg4)
>          print "=== Starting JUnit Run ==="
>          proc(cmdstr)
>          print "=== JUnit Run Complete ==="
>
>
> ####################
> ######  Main  ######
> ####################
>
> setup()
> run_junit()
>
> The setup() def seems to work great, but the
> run_junit() seems to have problems. I believe due to
> the params I'm passing. Here are the errors I'm
> getting:
>
> [qauser at gary automation]$ ./runJunit.py 
> === Starting JUnit Run ===
> Traceback (most recent call last):
>   File "/home/qauser/automation/runJunit.py", line 63,
> in ?
>     run_junit()
>   File "/home/qauser/automation/runJunit.py", line 54,
> in run_junit
>     proc(cmdstr)
>   File "/home/qauser/automation/runJunit.py", line 18,
> in proc
>     retval = subprocess.call(cmd, 0, None, None,
> outptr, errptr)
>   File
> "/opt/python-2.4.3/lib/python2.4/subprocess.py", line
> 412, in call
>     return Popen(*args, **kwargs).wait()
>   File
> "/opt/python-2.4.3/lib/python2.4/subprocess.py", line
> 542, in __init__
>     errread, errwrite)
>   File
> "/opt/python-2.4.3/lib/python2.4/subprocess.py", line
> 975, in _execute_child
>     raise child_exception
> OSError: [Errno 2] No such file or directory
>
> I can't seem to figure out what file or directory is
> missing. 
>
> Your help is greatly appreciated,
> Jerome
>
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