从 python subprocess.Popen(command, stderr=subprocess.PIPE, stdout=subprocess.PIPE) 捕获 stderr [英] capture stderr from python subprocess.Popen(command, stderr=subprocess.PIPE, stdout=subprocess.PIPE)

问题描述

我在这里多次看到这个帖子；但未能从命令中捕获故意错误.迄今为止我找到的最好的部分工作..

I have seen this posted so many times here; yet failed to capture intentional errors from command. Best partial work I have found so far..

from Tkinter import *
import os
import Image, ImageTk
import subprocess as sub
p = sub.Popen('datdsade',stdout=sub.PIPE,stderr=sub.PIPE)
output, errors = p.communicate()

root = Tk()
text = Text(root)
text.pack()
text.insert(END, output+ "Error: " + errors )
root.mainloop()

推荐答案

这非常适合我:

import subprocess
try:
    #prints results
    result = subprocess.check_output("echo %USERNAME%", stderr=subprocess.STDOUT, shell=True)
    print result
    #causes error
    result = subprocess.check_output("copy testfds", stderr=subprocess.STDOUT, shell=True)
except subprocess.CalledProcessError, ex:
    print "--------error------"
    print ex.cmd
    print ex.message
    print ex.returncode
    print ex.output

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