How to click the button automatically using python

[purnima1]

Hi experts,
Thanks for reply I changed my code and now getting different error

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

#Getting local session of Chrome
driver=webdriver.Chrome()

#put here the adress of your page
driver.get("http://mdmdv.gartner.com/mdm/app/marketingBounceBack")
#put here the content you have put in Notepad, ie the XPath
#elem = driver.find_elements_by_xpath("//*[@id='emailTab']")
#elem2 = driver.find_elements_by_xpath("//*[@id='emailBounceBacks']/div/div[2]/label")
#elem2[0].send_keys("C:\\Users\\pubhatia\\Documents\\project_related\\Jira_work\\month_wise_jira\\201712_release\\Data_enrichment_changes\\email_bounceback_template.xlsx")
elem2 = driver.find_elements_by_xpath("//*[@id='emailBounceBacks']/div/div[2]/label")[0].send_keys("C:\\Users\\pubhatia\\Documents\\project_related\\Jira_work\\month_wise_jira\\201712_release\\Data_enrichment_changes\\email_bounceback_template.xlsx")
elem2 = driver.find_elements_by_xpath("//*[@id='emailBounceBacks']/div/div[2]/label")[0].submit()

#elem2[0].submit()
elem3=driver.find_elements_by_xpath("//*[@id='emailBounceBacks']/div/div[3]/button")[0].submit()
#elem3[0].submit()
#("//*[@type='submit']")
#print(elem.get_attribute("class"))
#print(elem.get_attribute("value"))
#elem.click()
driver.close()

Error:
DevTools listening on ws://127.0.0.1:12070/devtools/browser/e325d476-f10c-4044-8adc-540c83a205f8
Traceback (most recent call last):
  File "openmdmtool.py", line 13, in <module>
    elem2 = driver.find_elements_by_xpath("//*[@id='emailBounceBacks']/div/div[2]/label")[0].send_keys("C:\\Users\\pubhatia\\Documents\\project_related\\Jira_work\\month_wise_jira\\201712_release\\Data_enrichment_changes\\email_bounceback_template.xlsx")
IndexError: list index out of range