‘platform’ import disappearing from selenium as a result of my script - selenium-webdriver

Question

Linux ip-172-31-36-170 3.10.35-43.137.amzn1.x86_64 #1 SMP Wed Apr 2 09:36:59 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Amazon Linux AMI release 2014.03
cpe:/o:amazon:linux:2014.03:ga
I've run into a weird problem with a script that uses selenium.webdriver.PhantomJS.
SYMPTOMS…
My script uses the following to start a phantomjs session
from selenium import selenium
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.action_chains import ActionChains
(…)
def load_driver(self, _driver = "phantomjs", _path = "./phantomjs"):
if "phantom" in str(_driver).lower():
self.driver = webdriver.PhantomJS(_path)
Fails with:
selenium.common.exceptions.WebDriverException: Message: 'Unable to start phantomjs with ghostdriver.' ; Screenshot: available via screen
HOWEVER, at the python command line, everything works fine…
from selenium import webdriver
_path = './phantomjs.exe'
driver = webdriver.PhantomJS(_path)
PLATFORM: Linux
platform.system() != 'Windows': True
(I’ll explain “PLATFORM: Linux”, and “platform.system() != 'Windows': True” below)
SO…
I traced the error to the “/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/service.py” and specifically this code…
def start(self):
"""
"""
try:
print "PLATFORM:", platform.system() #ADDED BY ME
# FOLLOWING ADDED BY ME, NOW CAUSING THE ERROR
print "platform.system() != 'Windows': ", platform.system() != 'Windows'
self.process = subprocess.Popen(self.service_args, stdin=subprocess.PIPE,
close_fds=platform.system() != 'Windows', # <-- THIS CAUSED ORIG PROB
stdout=self._log, stderr=self._log)
except Exception as e:
raise WebDriverException("Unable to start phantomjs with ghostdriver.", e)
AND HERE’S THE ISSUE…
When I run the code at the python command line (see above) everything is fine, AND the responses to ‘platform.system()’ and “platform.system() != 'Windows' ” are correct.
However, when I run my script, the ‘platform.system()’ reports blank and “platform.system() != 'Windows' ” errors. (See actual output below).
So, for some reason, when my script loads selenium and runs…THE SELENIUM CODE loses the ‘platform’ import.
Thanks for the help!
ACTUAL OUTPUT BELOW (NOTICE that 'PLATFORM:' is followed by 'blank' (instead of 'Linux'), and the next line “platform.system() != 'Windows' ” triggers the error. These lines were added by me into the SELENIUM code, not my code!)
PLATFORM:
Traceback (most recent call last):
File "./agmarknet.py", line 834, in <module>
username = options.username # --username
File "./agmarknet.py", line 124, in __init__
self.load_driver(driver, driver_path)
File "./agmarknet.py", line 521, in load_driver
self.driver = webdriver.PhantomJS(_path)
File "/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/webdriver.py", line 50, in __init__
self.service.start()
File "/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/service.py", line 64, in start
print "PLATFORM:", platform.system() #333
File "/usr/lib64/python2.6/platform.py", line 1272, in system
return uname()[0]
File "/usr/lib64/python2.6/platform.py", line 1239, in uname
processor = _syscmd_uname('-p','')
File "/usr/lib64/python2.6/platform.py", line 995, in _syscmd_uname
output = string.strip(f.read())
File "./agmarknet.py", line 350, in _signal_handler
self._cleanup()
File "./agmarknet.py", line 194, in _cleanup
self.driver.close()
AttributeError: 'Agmarknet' object has no attribute 'driver'
2014-05-18 12:42:40,281 - Agmarknet - INFO - Closing WebDriver...
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/usr/lib64/python2.6/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "./agmarknet.py", line 194, in _cleanup
self.driver.close()
AttributeError: 'Agmarknet' object has no attribute 'driver'
Error in sys.exitfunc:
Traceback (most recent call last):
File "/usr/lib64/python2.6/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "./agmarknet.py", line 194, in _cleanup
self.driver.close()