Python script fails using launchd and Selenium

Question

I'm trying to run a simple script using launchd in OS X 10.10.5 but the job fails. I think it has something to do with permissions/privileges not set correctly?

This is the error code it throws up:

Traceback (most recent call last): File "/Users/John/Documents/AutoRun/OpenTwitter.py", line 7, in driver = webdriver.Firefox() File "/Library/Python/2.7/site-packages/selenium-3.0.0.b2-py2.7.egg/selenium/webdriver/firefox/webdriver.py", line 64, in init self.service = Service(executable_path, firefox_binary=self.options.binary_location) File "/Library/Python/2.7/site-packages/selenium-3.0.0.b2-py2.7.egg/selenium/webdriver/firefox/service.py", line 44, in init log_file = open(log_path, "a+") IOError: [Errno 13] Permission denied: 'geckodriver.log' Exception AttributeError: "'Service' object has no attribute 'log_file'" in <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x10ca6bdd0>> ignored

I do get the printed "start script" in the console job.out that I've hardcoded into my script, so I assume launchd is actually starting the script ok, but it's running into a problem with Selenium/Firefox driver? And this is where my permissions issue is coming into play?

It runs fine in IDE/run and from the terminal.

Here's the test code I'm trying to run:

#!/usr/bin/python

from selenium import webdriver

print("start script")

driver = webdriver.Firefox()
driver.get("https://twitter.com/search?q=news&src=typd&lang=en")


print("twitter open, done")

The P.List as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>JohnsJob.job</string>
    <key>Program</key>
    <string>/Users/John/Documents/AutoRun/OpenTwitter.py</string>
    <key>StandardErrorPath</key>
    <string>/tmp/JohnsJob.job.err</string>
    <key>StandardOutPath</key>
    <string>/tmp/JohnsJob.job.out</string>
    <key>StartCalendarInterval</key>
    <array>
        <dict>
            <key>Hour</key>
            <integer>10</integer>
            <key>Minute</key>
            <integer>14</integer>
            <key>Weekday</key>
            <integer>3</integer>
        </dict>
    </array>
</dict>
</plist>

Note: I change the time for this code to run in launchd so I can test.

You are precisely correct; the lack of permissions are stopping your script from executing properly. I would suggest you also include the .plist for the launchd in your question too. — l'L'l
– l'L'l, Commented Aug 24, 2016 at 0:40
Thanks for your feedback, I've added the p.list code to the original question, any idea why the permissions are not set correctly and/or how/what file to set them on? — Kiwi
– Kiwi, Commented Aug 24, 2016 at 0:50
Are you launching this as a launchagent or launchdaemon, and which directory is the .plist located? — l'L'l
– l'L'l, Commented Aug 24, 2016 at 1:02
It's located in /Users/John/Library/LaunchAgents - I think it's a "User Agent", that's what it tells me in launchd (I'm new to this so not sure if that's the correct answer) — Kiwi
– Kiwi, Commented Aug 24, 2016 at 1:04
These can be tough to get right the first time and might require trying a few different things. I would start in the .plist and maybe try changing <key>Program</key><string>/Users/John/Documents/AutoRun/OpenTwitter.py</string> to <key>ProgramArguments</key> <array> <string>python</string> <string>/Users/John/Documents/AutoRun/OpenTwitter.py</string> </array> — l'L'l
– l'L'l, Commented Aug 24, 2016 at 1:34

Kiwi · Accepted Answer · 2016-08-25 02:59:21Z

0

I've managed to get it to work by putting the geckodriver in /usr/bin

Move the file to /usr/bin directory: sudo mv chromedriver /usr/bin
Goto /usr/bin directory and you would need to run something like "chmod a+x geckodriver" to mark it executable.

I think it was having trouble finding the PATH to the driver and stopping the script dead.

answered Aug 25, 2016 at 2:59

Kiwi

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