Passing selenium object references to a function in python

Question

Here I have an object in which I instantiate several Selenium WebDrivers to control a series of browsers from Selenium Grid.

drivers = {
    0: webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    1: webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()), 
    2: webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    3: webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    4: webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy())
}

What I want to then do is pass those drivers by reference to another method. Like so:

for driver in drivers:
    self.create_account(driver)

However I get the following error from Selenium when I get into the create_accounts method:

driver.get("http://google.com")
AttributeError: 'int' object has no attribute 'get'

I assume this is because I'm not passing the object reference properly, and its somehow transferring as an integer as opposed to an object with methods I can call. Is what I'm attempting to do possible in Python? Is there some other way that I should be doing this, or is what I am attempting to do simply not possible?

Nathan Merrill · Accepted Answer · 2014-11-25 23:33:30Z

You are creating a dictionary of drivers. If you are just going to assign each driver to a number, its probably better to create an array of drivers:

drivers = [
    webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()), 
    webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy()),
    webdriver.Remote('http://localhost:8080/wd/hub' , webdriver.DesiredCapabilities.FIREFOX.copy())
]

Then you can do:

for driver in drivers:

and

driver[4]

However, if you are going to use a dictionary, then you can do

for key, driver in drivers.items()

if you want both the number and the driver, or

for driver in drivers.values()

if you just need the driver.

user2555451 · Accepted Answer · 2014-11-25 23:26:42Z

0

You should be iterating over drivers.values() (or drivers.itervalues() in Python 2.x):

for driver in drivers.values():

This will assign driver to the webdriver.Remote instances inside the dictionary, all of which have a get method. Your current code however is assigning driver to the dictionary's integer keys because iterating over a dictionary yields its keys.

Below is a demonstration of what I said above:

>>> dct = {'a':1, 'b':2, 'c':3}
>>> for i in dct:  # Yields keys
...     i
...
'a'
'b'
'c'
>>> for i in dct.values():  # Yields values
...     i
...
1
2
3
>>>

answered Nov 25, 2014 at 23:26

user2555451

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