Running javascript in Selenium using Python

I am totally new to Selenium. I want to execute a javascript snippet in the following code(as commented in the code), but can't do so. Please help.

from selenium import webdriver
import selenium
from selenium.common.exceptions import NoSuchElementException
from selenium.webdriver.common.keys import Keys
import time

patch = raw_input("Enter patch number\n")
rel = raw_input("Enter release\n")
plat = raw_input("Enter port\n")

browser = webdriver.Firefox()

browser.get("xxxxxxxxxxxxxxxxx")

pdtfamily = browser.find_element_by_id("prodFamilyID")
pdtfamily.send_keys("Database & Tools" + Keys.TAB)
time.sleep(5)

pdt = browser.find_element_by_id("productID")
pdt.send_keys("Intelligent Agent" + Keys.TAB)
time.sleep(5)

pdt1 = browser.find_element_by_id("patchCacheChkBxID")
pdt1.send_keys(Keys.SPACE)
time.sleep(5)

pdt7 =  browser.find_element_by_id("M__Idf")
pdt7.send_keys(plat)

pdt8 =  browser.find_element_by_id("M__Idg")
pdt8.send_keys("American English")

# Here I want to execute this javascript - "submitForm('patchCacheAdd',1,{'event':'ok'});return false"

browser.close()

If I use -

selenium.GetEval("submitForm('patchCacheAdd',1,{'event':'ok'});return false")

it errors out as -

AttributeError: 'module' object has no attribute 'GetEval'I 

Try browser.execute_script instead of selenium.GetEval.

See this answer for example.

Use execute_script, here's a python example:

from selenium import webdriver
driver = webdriver.Firefox()
driver.get("http://stackoverflow.com/questions/7794087/running-javascript-in-selenium-using-python") 
driver.execute_script("document.getElementsByClassName('comment-user')[0].click()")

If you move from iframes, you may get lost in your page, best way to execute some jquery without issue (with selenimum/python/gecko):

# 1) Get back to the main body page
driver.switch_to.default_content()

# 2) Download jquery lib file to your current folder manually & set path here
with open('./_lib/jquery-3.3.1.min.js', 'r') as jquery_js: 
    # 3) Read the jquery from a file
    jquery = jquery_js.read() 
    # 4) Load jquery lib
    driver.execute_script(jquery)
    # 5) Execute your command 
    driver.execute_script('$("#myId").click()')