CODEWITHSUNDEEP
pythonuser-interfacecmdpyqt
user2638731
user2638731

Reputation: 605

Pyqt: Execute Command

I am trying to execute command lines in a pyqt application, here is what I am doing so far:

stdouterr = os.popen4(cmd)[1].read()

simple, and for the most part it does work, but when I open up a text file for example, the pyqt programs stops until the text file is closed. Is there a way I can have something like that open and not stop my application.

Edit:

Okay I almost figured it out. I am currently doing this:

Popen(cmd, shell=True,
         stdin=None, stdout=None, stderr=None, close_fds=True)

which does want I want it to, but is there a way to read stdout and stderr after the process is done running?

Upvotes: 2

Views: 3156

Answers (2)

zerubits
zerubits

Reputation: 21

#my pyqt knowledge is not the best but this works for me... didn't use your example. hope you get it still.
from PyQt5.QtCore import QProcess

process = QProcess()
process.start("yourcommand")
process.waitForStarted()
process.waitForFinished()
process.readAll()
process.close()

'''
from PyQt5.QtCore import QProcess
process = QProcess()
process.start('driverquery')
process.waitForStarted()
process.waitForFinished():
process.waitForReadyRead()
tasklist = process.readAll()
process.close()
tasklist = str(tasklist).strip().split("\\r\\n")
print(tasklist)
'''

Upvotes: 2

shanet
shanet

Reputation: 7324

You can read from stdout and stderr like so:

process = subprocess.Popen(cmd, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)

stdout, stderr = process.communicate()
print stdout
print stderr

Upvotes: 0

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