3-1-5-22. Quiz: The Standard Library

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Quiz: Compute an Exponent

It’s your turn to import and use the math module. Use the math module to calculate e to the power of 3. print the answer.

Refer to the 

# print e to the power of 3 using the math module

Quiz: Password Generator

Write a function called generate_password that selects three random words from the list of words word_list and concatenates them into a single string. Your function should not accept any arguments and should reference the global variable word_list to build the password.

password_generator.py

# TODO: First import the `random` module


# We begin with an empty `word_list`
word_file = "words.txt"
word_list = []

# We fill up the word_list from the `words.txt` file
with open(word_file,'r') as words:
	for line in words:
		# remove white space and make everything lowercase
		word = line.strip().lower()
		# don't include words that are too long or too short
		if 3 < len(word) < 8:
			word_list.append(word)

# TODO: Add your function generate_password below
# It should return a string consisting of three random words 
# concatenated together without spaces



# Now we test the function
print(generate_password())

words.txt

Alice
was
beginning
to
get
very
tired
of
sitting
by
her
sister
bank
having
nothing
Once
twice
she
had
peeped
into
the
book
her
sister
was
reading
but
it
had
no
pictures
or
conversations
in
it
and
what
is
the
use
of
a
book
thought
Alice
without
pictures
or
conversations
Our favourite modules

The Python Standard Library has a lot of modules! To help you get familiar with what’s available, here are a selection of our favourite Python Standard Library modules and why we use them!

  • csv: very convenient for reading and writing csv files
  • collections: useful extensions of the usual data types including OrderedDict, defaultdict and namedtuple
  • random: generates pseudo-random numbers, shuffles sequences randomly and chooses random items
  • string: more functions on strings. This module also contains useful collections of letters like string.digits (a string containing all characters which are valid digits).
  • re: pattern-matching in strings via regular expressions
  • math: some standard mathematical functions
  • os: interacting with operating systems
  • os.path: submodule of os for manipulating path names
  • sys: work directly with the Python interpreter
  • json: good for reading and writing json files (good for web work)

We hope you find these useful!

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