python捕捉其它程序的输出信息

python可以非常容易的捕获程序的输出信息，同时也可以传递给命令行程序信息

#捕获程序输出信息
#!/usr/bin/python
import subprocess
myprocess = subprocess.Popen(['net','statistics','workstation'],stdout=subprocess.PIPE)
(sout,serr) = myprocess.communicate()
for line in sout.split('\n'):
    if line.strip().startswith('Bytes received'):
        print "This workstation received %s bytes." % line.strip().split(' ')[-1]
#传递给命令行程序信息
#!/usr/bin/python
import subprocess
myprocess = subprocess.Popen(['net','statistics','workstation'],stdout=subprocess.PIPE)
(sout,serr) = myprocess.communicate()
for line in sout.split('\n'):
    if line.strip().startswith('Bytes received'):
        print "This workstation received %s bytes." % line.strip().split(' ')[-1]
myprocess.wait()               # We wait for process to finish
print myprocess.returncode     # then we get its returncode.