Selenium 'WebElement' object has no attribute 'Get_Attribute'

The "Get_Attribute" property doesn't exist, but the "get_attribute" property does:

items = driver.find_elements_by_tag_name("a")
print items

for item in items:
    href = item.get_attribute('href')
    print href

For python with input-field is like:

nowText = driver.find_element_by_id("source").get_attribute("value")
print(nowText)

src = driver.find_element_by_css_selector("img").get_attribute("src")