How to open multiple instances of Firefox using python?

Question

Can someone please help me on how to open multiple instances of firefox using selenium in python.

I wrote the following code and it does open multiple instances but I would want to keep all the references to the browser so I can access each browser to do specific tasks and should be able to Quit all the browsers once the test is done.

class LoadTestCase(unittest.TestCase):

def setUp(self):
    i = 0
    while (i < 2):
      self.driver = webdriver.Firefox()
      self.driver.implicitly_wait(30)
      self.base_url = "http://example.com/"
      self.verificationErrors = []
      self.accept_next_alert = True
      driver = self.driver
      url = "http://example.com/"
      driver.get(self.base_url + "/")
      i = i + 1

possible duplicate of python selenium multiple test cases

Paulo Scardine
– Paulo Scardine

2014-06-24 22:25:11 +00:00
Commented Jun 24, 2014 at 22:25 — Paulo Scardine
– Paulo Scardine, Commented Jun 24, 2014 at 22:25

jonrsharpe · Accepted Answer · 2014-06-24 22:34:15Z

0

For one thing:

for i in range(2):
    ...

is much neater and less error-prone than:

i = 0
while i < 2:
    ...
    i = i + 1 # or just 'i += 1'

But your main problem is that each time through the loop you replace the previous webdriver, losing access to it:

self.driver = webdriver.Firefox()

Instead, consider a list:

self.drivers = []
for i in range(2):
    self.drivers.append(webdriver.Firefox())
    ...

now you retain access to all of them.

answered Jun 24, 2014 at 22:34

jonrsharpe

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1 Comment

jonrsharpe Over a year ago

Two things: 1. Code is very hard to read in the comments (particularly Python, where indentation matters). 2: Your description of the problem is useless. However, the issue is clear; you need to get and quit each instance in the list separately - you can't just call the method on the list and expect it to work.

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