Tag objects in Beautiful Soup

Thu Nov 20 09:31:08 EST 2014

Re:'Accessing the Tag object from Beautiful Soup' (page 22-25 - Getting Started with Beautiful Soup)
So far the code to python27 runs as given in the book, re: - 
----------------------------------------------------------------------------
>>> html_atag = """<html><body><p>Test html a tag example</p>
... <a href="http://www.packtpub.com'>Home</a>
... <a href="http;//www.packtpub.com/books'.Books</a>
... </body>
... </html>"""
>>> soup = BeautifulSoup(html_atag,'lxml')
>>> atag = soup.a
>>> print(atag)
<a href="http://www.packtpub.com'>Home</a>
<a href=" http="">
</a>
>>> type(atag)
<class 'bs4.element.Tag'>
>>>
>>> tagname = atag.name
>>> print tagname
a
>>> atag.name = 'p'
>>> print (soup)
<html><body><p>Test html a tag example</p>
<p href="http://www.packtpub.com'>Home</a>
<a href=" http="">
</p></body>
</html>
----------------------------------------------------------------------------
then under the next Sub heading : 'Attributes of a Tag object'
text reads : 
atag = soup_atag.a
print (atag['href'])

#output
http://www.packtpub.com

however when I put this code to the console I get error returns at the first line re:- 
----------------------------------------------------------------------------
>>> atag = soup_atag.a
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'soup_atag' is not defined
>>>
----------------------------------------------------------------------------
Can anyone tell me where I am going wrong or where the text is wrong ? 
So far the given code has run okay, I have put to the console everything the text tells you to. 
Thank you for reading.
Simon Evans