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PythonCHBPythonCHB
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Merge pull request UWPCE-PythonCert#51 from meshmote/master
Added session04 homework
2 parents 2964b02 + 47df8af commit 46ce6ea

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‎Students/RPerkins/session04/dict_setlab.py‎

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__author__ = 'Robert W. Perkins'
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d = {'name': 'Chris', 'city': 'Seattle', 'cake': 'Chocolate'}
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print d
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d.pop('cake')
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print d
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d['fruit'] = 'Mango'
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print d
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print d.keys()
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print d.values()
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print 'cake' in d
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print 'Mango' in d.values()
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int_list = []
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hex_list = []
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for i in range(16):
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int_list.append(i)
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hex_list.append(hex(i))
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h_ex={}
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for k, l in zip(int_list, hex_list):
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h_ex[k] = l
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print h_ex
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d_prime = {}
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for k, v in d.items():
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d_prime[k] = v.count('t')
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print d_prime
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s2 = set()
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s3 = set()
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s4 = set()
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for k in range(20):
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if k % 2 == 0:
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s2.update([k])
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if k % 3 == 0:
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s3.update([k])
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if k % 4 == 0:
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s4.update([k])
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print s2
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print s3
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print s4
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print s3.issubset(s2)
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print s4.issubset(s2)
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p_set = {'P', 'y', 't', 'h', 'o', 'n'}
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p_set.update(['i'])
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m_set = frozenset(('m', 'a', 'r', 'a', 't', 'h', 'o', 'n'))
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print p_set.union(m_set)
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print p_set.intersection(m_set)

‎Students/RPerkins/session04/file_copier.py‎

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__author__ = 'Robert W. Perkins'
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from_file = './test.txt'
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to_file = './test/testcopy.txt'
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indata = open(from_file).read()
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open(to_file, 'w').write(indata)

‎Students/RPerkins/session04/kata14.py‎

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__author__ = 'Robert W. Perkins'
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import random
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def get_book(target):
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""" Open target file and read contents into book_data"""
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f = open(target)
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book_data = f.read()
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f.close()
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return book_data
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def strip_newlines(in_text):
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""" Replace newlines with spaces"""
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return in_text.replace('\n', ' ')
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def mk_wordlist(in_list):
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"""Split input string at spaces and return word list"""
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return in_list.split(' ')
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def create_dict(orig_text):
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""" Create trigram dictionary"""
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trigram = {}
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word_list = mk_wordlist(strip_newlines(orig_text))
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for idx, word in enumerate(word_list):
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if idx > (len(word_list) - 3):
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break
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else:
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trigram_key = '%s %s' % (word_list[idx], word_list[idx + 1])
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if trigram_key in trigram:
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trigram[trigram_key].append(word_list[idx + 2])
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else:
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trigram[trigram_key] = [word_list[idx + 2]]
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return trigram
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def get_randomkey(t_gram):
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"""Return a random key"""
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return random.choice(list(t_gram.keys()))
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def get_newword(word_key, word_dict):
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"""Return a random word from the list at the provided key"""
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new_wordlist = word_dict.get(word_key)
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return random.choice(new_wordlist)
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def create_newbook(trigram_dict, word_limit, w_line):
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"""Create random output of num_words words, using trigram_dict keys to generate new words"""
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start_key = get_randomkey(trigram_dict)
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new_word = get_newword(start_key, trigram_dict)
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out_list = start_key.split(' ')
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out_list.insert(0, '...')
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out_list.append(new_word)
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left_frame = 0
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for i in range(word_limit):
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for j in range(w_line):
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next_key = '%s %s' % (out_list[left_frame+1], out_list[left_frame + 2])
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while not next_key in trigram_dict:
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next_key = get_randomkey(trigram_dict)
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next_word = get_newword(next_key, trigram_dict)
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out_list.append(next_word)
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left_frame += 1
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out_list.append('\n')
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out_list.append('...')
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out_string = ' '.join(out_list)
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return out_string
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if __name__ == '__main__':
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# num_words gives the number of words to be generated
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# words_line gives the number of words per line
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num_words = 200
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words_line = 20
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#source_text = '/intropython/data/sherlock_small.txt'
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source_text = '/intropython/data/sherlock.txt'
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new_inbook = get_book(source_text)
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new_dict = create_dict(new_inbook)
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new_outbook = create_newbook(new_dict, num_words, words_line)
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print new_outbook

‎Students/RPerkins/session04/mailroom.py‎

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__author__ = 'Robert W. Perkins'
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def mk_dbase():
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"""Create data structure for donor list"""
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# donor name = key: sum of donations, donation 1, donation 2, ...
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ndbase = {
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'Jeff McCarthy': [4000, 2500, 1000, 500],
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'Tabitha Simmons': [2450, 450, 2000],
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'Angela Cartwright': [5500, 5500],
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'Billy Murray': [3700, 3450, 250],
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'Alexa Dalton': [6940, 240, 1200, 5500]
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}
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return ndbase
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def get_input():
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"""Ask user whether to send thank you note or create report and return answer"""
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choices = {
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'1': 'Enter "1" to Send a Thank-You Note',
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'2': 'Enter "2" to Create a Report',
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'q': 'Enter "q" to quit-->'
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}
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in_put = None
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while not in_put in choices:
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in_put = raw_input('%s, %s, %s' % (choices['1'], choices['2'], choices['q']))
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return in_put
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def safe_input():
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try:
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new_d = raw_input("Enter donation amount (must be numeric)-->")
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except EOFError:
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return None
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except KeyboardInterrupt:
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return None
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return int(new_d)
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def print_email(p_name, p_donation):
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""" Print thank you note for donation from p_name """
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ltr_temp = {'Template1': 'Dear {name}, Thanks so much for your generous donation of ${donation}. '
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'It is greatly appreciated!'
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}
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print ltr_temp['Template1'].format(name=p_name, donation=p_donation)
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def app_record(app_name, app_dict):
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""" Append an existing donor record """
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app_donation = safe_input()
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app_dict[app_name].append(app_donation)
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app_dict[app_name][0] += app_donation
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print_email(app_name, app_donation)
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def add_record(add_name, add_dict):
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""" Add new donor to database """
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add_donation = safe_input()
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add_dict[add_name] = [add_donation, add_donation]
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print_email(add_name, add_donation)
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def thank_you(donor_dict):
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""" Find or create a donor, add new donation, and return a thank you note"""
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name = 'list'
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while name == 'list':
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new_name = raw_input("Enter full name of donor-->")
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name = str(new_name)
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if not (name == 'list'):
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break
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else:
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for item in donor_dict:
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print item
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if name in donor_dict:
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app_record(name, donor_dict)
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else:
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add_record(name, donor_dict)
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def write_efile(name, donation_list):
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"""write a donor email to disk named "name".txt"""
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to_file = './%s.txt' % name
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outdata = 'Dear %s, Thanks so much for your recent generous donation of $%s. ' \
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'It is greatly appreciated!' % (name, donation_list[-1])
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open(to_file, 'w').write(outdata)
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#def sum_element(key_dbase):
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#"""set key for sorting on sum element of data structure"""
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#return key_dbase[1]
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def mk_report(rep_dict):
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""" Create a sorted list of donors"""
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print 'Donor Name\t\t\tTotal Donations\t# of Donations\t\tAverage Donation'
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#rep_dbase.sort(key=sum_element)
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for j, k in rep_dict.items():
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num_donations = len(k)-1
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avg_donation = k[0]/(len(k)-1)
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print '%s\t\t\t%s\t\t\t\t%s\t\t\t\t\t\t%s' % (j, k[0], num_donations, avg_donation)
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write_efile(j,k)
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if __name__ == '__main__':
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donor = mk_dbase()
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answer = None
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while not (answer == "q"):
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answer = get_input()
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if answer == "q":
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break
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elif answer == "1":
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thank_you(donor)
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else:
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mk_report(donor)
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print "Exiting"

‎Students/RPerkins/session04/print_filepath.py‎

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__author__ = 'Robert W. Perkins'
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import pathlib
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pth = pathlib.Path('./')
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for f in pth.iterdir():
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print '%s\%s' % (pth.absolute(), f)

‎Students/RPerkins/session04/test.txt‎

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This is the test file content

‎Students/RPerkins/session04/test/testcopy.txt‎

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This is the test file content

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