Selenium: entering Username with find_element_by_name, how to locate Name? - python-3.x

Question

I'm using a bit of code from a related question
username = driver.find_element_by_name("username")
username.send_keys("username")
I looked at the source code for the login page, and saw:
HTML snippet
However, I'm getting errors for both
username = driver.find_element_by_name("Email")
and
username = driver.find_element_by_name("ember442")
The error says:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/anaconda/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 385, in find_element_by_name
return self.find_element(by=By.NAME, value=name)
File "/anaconda/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 791, in find_element
'value': value})['value']
File "/anaconda/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 256, in execute
self.error_handler.check_response(response)
File "/anaconda/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"name","selector":"Email"}
What am I doing wrong here? My only other thought would be to use one of the other commands for locating elements (find_element_by_id,
find_element_by_name,
find_element_by_xpath,
find_element_by_link_text,
find_element_by_partial_link_text,
find_element_by_tag_name,
find_element_by_class_name,
find_element_by_css_selector) but those don't seem to work either.

Answer 1

It's because none of those are element names. You should use :
username = driver.find_element_by_id("ember442")

Answer 2

Here is the Answer to your Question:
For Email try xpath as //input[#id='ember442']:
username = driver.find_element_by_xpath("//input[#id='ember442']")
username.send_keys("username")
For Password try xpath as //input[#id='ember443']:
username = driver.find_element_by_xpath("//input[#id='ember443']")
username.send_keys("username")
Let me know if this Answers your Question.

Answer 3

Got it! I ended up finding a related question (albeit one using Java) and a piece of code in an answer: driver.findElement(By.xpath("//input[#name='name']")) and modified it to read: username = driver.find_element_by_xpath("//input[#placeholder='Email']"‌​)
I'd love to know how to do this by referencing the id name (find_element_by_id) but this was a task-specific question so it'll work for now!
TLDR; I had to specify the placeholder name within find_element_by_xpath.