Python Selenium Webdriver Login Issues On Mac

I had this question after viewing Using Python To Iterate Through All Website Pages And Paste Changed Content Back.

I am able to open https://www.blogger.com/about/ but then I need to click on the SIGN IN link at the top right of the screen and then insert my username and password but keep getting strange errors.  I am using Python 3.3.6 and Selenium 2.53.6

I am getting this error in my code

File "expertsBrazil2webdriver.py", line 16, in <module>
    driver.findElement (By.linkText("SIGN IN")).click()
AttributeError: 'WebDriver' object has no attribute 'findElement'

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Here is the code I am using

from selenium import webdriver
from selenium.webdriver.common.proxy import *
import traceback
import random
import os
import time

os.environ["SELENIUM_SERVER_JAR"] = "/Users/rjw/Documents/Python/selenium-server-standalone-3$

browser = None
try:
  # browser = webdriver.Firefox()
    driver = webdriver.Safari()
    driver.get('https://www.blogger.com/about/')   # navigate to your blog
    time.sleep(5)
    driver.findElement (By.linkText("SIGN IN")).click()
except:
    print(traceback.format_exc())
finally:
    if browser:
        browser.quit()

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