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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 SAISOFT PYT-PR
Step1:  Expected
Step2:  In class, we looked at a passwords database that doesn't save actual passwords, only hashes thereof.  Even system administrators with the keys to the database, have no means to force a hash to run backwards to regain the phrase which was behind it.  A hash is a one way street.
LAB
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Python Code:
import hashlib
m = hashlib.sha256()
m.update(b"Nobody inspects")
m.update(b" the spammish repetition")
m.digest()
Explanation: SAISOFT PYT-PR:  Session 10
The Ecosystem includes Many Languages
The Python ecosystem involves Python in using other languages and rule sets such as:
SQL (Structured Query Language)
Regexes (Regular Expressions)
Markdown (for Jupyter Notebooks)
magic (% and %% inside Notebooks and I-Python)
APIs (every library and framework comes with one)
Sphinx (documentation generator, uses reStructured Text)
JavaScript (used with web frameworks)
Template Languages (example: Jinja)
HTML / CSS (naturally)
Widget Toolkits (more APIs for GUIs)
IDEs (such as Spyder, Pycharm, Sublime Text, vi, emacs)
and so much else.
Lets take a look at another Standard Library module and talk about what it does.  
Hash functions are not designed to preserve content.  They don't encrypt.  They're about associating some unique finger print with any hashable object.
End of explanation
result = hashlib.sha256(b"Nobody inspects the spammish repetition").hexdigest()
result
print("Digest size", m.digest_size)
print("Block size ", m.block_size)
Explanation: Expected:
<pre>
b'\x03\x1e\xdd}Ae\x15\x93\xc5\xfe\\\x00o\xa5u+7\xfd\xdf\xf7\xbcN\x84:\xa6\xaf\x0c\x95\x0fK\x94\x06'
</pre>
End of explanation
# Uncomment me to check your result
# assert result == 'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
Explanation: In class, we looked at a passwords database that doesn't save actual passwords, only hashes thereof.  Even system administrators with the keys to the database, have no means to force a hash to run backwards to regain the phrase which was behind it.  A hash is a one way street.
LAB:
Check the Python docs and run the above example with sha224 instead.  Do you get past this assertion (unit test)?
End of explanation
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