Merge branch 'master' of https://github.com/UWPCE-PythonCert/IntroPython-2017

Author: brhelodrvr

students/Chao/session05/dict_comps.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+food_prefs = {"name": "Chris",
+              "city": "Seattle",
+              "cake": "chocolate",
+              "fruit": "mango",
+              "salad": "greek",
+              "pasta": "lasagna"}
+
+def sformat(**kwargs):
+    """ input dict and return a formatted string """
+    return "{name} is from {city}, and he likes {cake} cake, {fruit} fruit, {salad} salad, and {pasta} pasta".format(**kwargs)
+
+def hexcomps():
+    """ Using a list comprehension, build a dictionary of numbers from zero to fifteen and the hexadecimal equivalent (string is fine). """
+    h1 = [hex(i) for i in range(16)]
+    d1 = {i: j for i, j in enumerate(h1)}
+    return d1
+
+def hexcomps2():
+    """ Do the previous entirely with a dict comprehension – should be a one-liner """
+    dh = {i: hex(i) for i in range(16)}
+    return dh
+
+def counta():
+    """ Build a new dictionary with food_prefs but replace values with number of a's in it """
+    newdict = {i: j.count('a') for i, j in food_prefs.items()}
+    return newdict
+
+def seta():
+    """ build sets with set comprehension """
+    s2 = {i for i in range(21) if i%2 == 0}
+    s3 = {i for i in range(21) if i%3 == 0}
+    s4 = {i for i in range(21) if i%4 == 0}
+    return "In seta(),  s2 = {}, s3 = {}, s4 = {}".format(s2, s3, s4)
+
+def setb():
+    """ A list of sets """
+    ls = [{i for i in range(21) if i%j == 0} for j in range(2, 5)]
+    return ls
+
+
+if __name__ == '__main__':
+    """ Main function """
+    print(sformat(**food_prefs))
+    print(hexcomps())
+    print(hexcomps2())
+    print(counta())
+    print(seta())
+    print(setb())

students/Chao/session05/except_exercise.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python
+
+"""
+An exercise in playing with Exceptions.
+Make lots of try/except blocks for fun and profit.
+
+Make sure to catch specifically the error you find, rather than all errors.
+"""
+
+from except_test import fun, more_fun, last_fun
+
+
+# Figure out what the exception is, catch it and while still
+# in that catch block, try again with the second item in the list
+first_try = ['spam', 'cheese', 'mr death']
+
+try:
+    joke = fun(first_try[0])
+except NameError:
+    print('Whoops! there is no joke for: {}'.format(first_try[0]))
+
+# Here is a try/except block. Add an else that prints not_joke
+try:
+    not_joke = fun(first_try[2])
+except SyntaxError:
+    print('Run Away!')
+else:
+    print(not_joke)
+
+# What did that do? You can think of else in this context, as well as in
+# loops as meaning: "else if nothing went wrong"
+# (no breaks in  loops, no exceptions in try blocks)
+
+# Figure out what the exception is, catch it and in that same block
+#
+# try calling the more_fun function with the 2nd language in the list,
+# again assigning it to next_joke.
+#
+# If there are no exceptions, call the more_fun function with the last
+# language in the list regardless of whether there was an exception
+
+# Finally, while still in the try/except block and regardless of whether
+# there were any exceptions, call the function last_fun with no
+# parameters. (pun intended)
+
+langs = ['java', 'c', 'python']
+
+try:
+    more_joke = more_fun(langs[0])
+except IndexError:
+    next_joke = more_fun(langs[1])
+    more_fun(langs[2])
+    last_fun()
+
+

students/Chao/session05/except_test.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+"""
+silly little test module that is designed to trigger Exceptions when
+run from the except_exercise.py file
+"""
+
+import time
+
+conclude = "And what leads you to that conclusion?"
+district = "Finest in the district, sir."
+cheese = "It's certainly uncontaminated by cheese."
+clean = "Well, it's so clean."
+shop = "Not much of a cheese shop really, is it?"
+cust = "Customer: "
+clerk = "Shopkeeper: "
+
+
+def fun(reaper):
+    if reaper == 'spam':
+        print(s)
+    elif reaper == 'cheese':
+        print()
+        print('Spam, Spam, Spam, Spam, Beautiful Spam')
+    elif reaper == 'mr death':
+        print()
+        return('{}{}\n{}{}'.format(cust, shop, clerk, district))
+
+
+def more_fun(language):
+    if language == 'java':
+        test = [1, 2, 3]
+        test[5] = language
+    elif language == 'c':
+        print('{}{}\n{}{}'.format(cust, conclude, clerk, clean))
+
+
+def last_fun():
+    print(cust, cheese)
+    time.sleep(1)
+    import antigravity

students/Chao/session05/mailroom3.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+import sys
+
+donors = {"John Doe": [152.33, 700], "Jane Doe": [23.19, 50, 15.99]}
+
+def main_loop():
+    """ Main menu to call different functions """
+    menu_dict = {'s': thank_you,
+                 'c': report,
+                 'e': email_all,
+                 'q': sys.exit}
+    while True:
+        print("\n========== Donation Management System Main Menu ==========")
+        print("*                 (s) Send a Thank You                   *")
+        print("*                 (c) Create a Report                    *")
+        print("*                 (e) Send letters to everyone           *")
+        print("*                 (q) Quit                               *")
+        print("==========================================================")
+        result = input("Please select a menu item: ")
+        try:
+            menu_dict[result]()
+        except KeyError:
+            print("\n*** Selected item not in the menu. Please try again. ***")
+
+def email(n):
+    """ Send donor an email with latest donation """
+    return """
+        Dear {},
+
+        Thank you for your recent generous donation of ${}.
+        Your support encourages our continued commitment to reaching our goal.
+
+        Sincerely,
+        The Donation Management
+        """.format(n, donors.get(n)[-1])
+
+def thank_you():
+    """ Thank you function """
+    while True:
+        result = input("\nPlease enter full name, 'list' for current donor list, or 'q' return to the main menu: ")
+
+        # Print donor list
+        if result == "list":
+            print(str(donors.keys())[11:-2])
+        # Back to the main menu
+        elif result == "q":
+            break
+        # Create new donations
+        else:
+            # Check if donor is already in dict, if not, create a empty list for value
+            if result not in donors:
+                donors[result] = []
+            amount = input("Please enter the amount of donation: ")
+            try:
+                donors[result].append(float(amount))
+                print("\nSending Thank You email...\n{}".format(email(result)))
+            except ValueError:
+                print("*** Wrong value format, please enter a valid number. ***")
+                # Make sure to remove the donor if donation amount not entered correctly
+                donors.pop(result)
+
+def report():
+    """ Generate report """
+    print("\n* Donor Name                  |     Total gifted     | Donations |  Average gifted *")
+    print("====================================================================================")
+    for donor in donors:
+        # Total amount
+        total = 0.0
+        for i in donors[donor]:
+            total += i
+        # Number of donations
+        don = len(donors[donor])
+        # Average donation
+        avg = total/don
+        # Print report
+        print("* {: <30}{:16.2f}{: >16}{:18.2f} *".format(donor, total, don, avg))
+    print("====================================================================================")
+
+def email_all():
+    """ Write a full set of letters to everyone to individual files on disk """
+    for donor in donors:
+        with open('{}.txt'.format(donor).replace(" ", "_"), 'w') as f_out:
+            f_out.write(email(donor))
+    print("\nLetters generated!")
+
+if __name__ == '__main__':
+    """ Main function """
+    main_loop()

students/Chao/session06/cigar_party.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+"""
+When squirrels get together for a party, they like to have cigars.
+A squirrel party is successful when the number of cigars is between
+40 and 60, inclusive. Unless it is the weekend, in which case there
+is no upper bound on the number of cigars.
+
+Return True if the party with the given values is successful,
+or False otherwise.
+"""
+
+
+def cigar_party(cigars, is_weekend):
+    return cigars >= 40 and (cigars <= 60 or is_weekend)

students/Chao/session06/date_fashion.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+"""
+You and your date are trying to get a table at a restaurant.
+The parameter "you" is the stylishness of your clothes, in the range 0..10, and "date" is the stylishness of your date's clothes.
+The result getting the table is encoded as an int value with 0=no, 1=maybe, 2=yes.
+If either of you is very stylish, 8 or more, then the result is 2 (yes).
+With the exception that if either of you has style of 2 or less, then the result is 0 (no). Otherwise the result is 1 (maybe).
+"""
+
+def date_fashion(you, date):
+    if you <= 2 or date <= 2:
+        return 0
+    elif you >= 8 or date >= 8:
+        return 2
+    else:
+        return 1

students/Chao/session06/kwa_ex.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+def func(fore_color='red', back_color='blue', link_color='yellow', visited_color='green'):
+    """ Color function with four optional parameters """
+    return (fore_color, back_color, link_color, visited_color)
+
+def func2(*args, **kwargs):
+    """ Pass coloe thruogh args and kwargs """
+    return (args, kwargs)

students/Chao/session06/mailroom4.py

@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+import sys
+
+donors = {"John Doe": [152.33, 700], "Jane Doe": [23.19, 50, 15.99]}
+
+def main_loop():
+    """ Main menu to call different functions """
+    menu_dict = {'s': thank_you,
+                 'c': report,
+                 'e': email_all,
+                 'q': sys.exit}
+    while True:
+        print("\n========== Donation Management System Main Menu ==========")
+        print("*                 (s) Send a Thank You                   *")
+        print("*                 (c) Create a Report                    *")
+        print("*                 (e) Send letters to everyone           *")
+        print("*                 (q) Quit                               *")
+        print("==========================================================")
+        result = input("Please select a menu item: ")
+        try:
+            menu_dict[result]()
+        except KeyError:
+            print("\n*** Selected item not in the menu. Please try again. ***")
+
+def email(n):
+    """ Send donor an email with latest donation """
+    return """
+        Dear {},
+
+        Thank you for your recent generous donation of ${}.
+        Your support encourages our continued commitment to reaching our goal.
+
+        Sincerely,
+        The Donation Management
+        """.format(n, donors.get(n)[-1])
+
+def donor_list():
+    """ List name of donors """
+    return str(donors.keys())[11:-2]
+
+def add_donor(name):
+    """ Create new donor entry """
+    donors[name] = []
+
+def add_donation(name, amount):
+    """ Create new donation """
+    try:
+        donors[name].append(float(amount))
+        print("\nSending Thank You email...\n{}".format(email(name)))
+    except ValueError:
+        print("*** Wrong value format, please enter a valid number. ***")
+        # Make sure to remove the donor if donation amount not entered correctly
+        donors.pop(name)
+
+def thank_you():
+    """ Thank you function """
+    while True:
+        result = input("\nPlease enter full name, 'list' for current donor list, or 'q' return to the main menu: ")
+
+        # Print donor list
+        if result == "list":
+            print(donor_list())
+        # Back to the main menu
+        elif result == "q":
+            break
+        # Create new donations
+        else:
+            # Check if donor is already in dict, if not, create a empty list for value
+            if result not in donors:
+                add_donor(result)
+            amount = input("Please enter the amount of donation: ")
+            add_donation(result, amount)
+
+def gen_report(name):
+    """ Generate report """
+    total = 0.0
+    for i in donors[name]:
+        total += i
+    # Number of donations
+    don = len(donors[name])
+    # Average donation
+    avg = total/don
+    # Print report
+    return "* {: <30}{:16.2f}{: >16}{:18.2f} *".format(name, total, don, avg)
+
+def report():
+    """ Output report """
+    print("\n* Donor Name                  |     Total gifted     | Donations |  Average gifted *")
+    print("====================================================================================")
+    for donor in donors:
+        # Print report
+        print(gen_report(donor))
+    print("====================================================================================")
+
+def email_all():
+    """ Write a full set of letters to everyone to individual files on disk """
+    for donor in donors:
+        with open('{}.txt'.format(donor).replace(" ", "_"), 'w') as f_out:
+            f_out.write(email(donor))
+    print("\nLetters generated!")
+
+if __name__ == '__main__':
+    """ Main function """
+    main_loop()

students/Chao/session06/squirrel_play.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+"""
+The squirrels in Palo Alto spend most of the day playing.
+In particular, they play if the temperature is between 60 and 90 (inclusive).
+Unless it is summer, then the upper limit is 100 instead of 90.
+Given an int temperature and a boolean is_summer, return True if the squirrels play and False otherwise.
+"""
+
+def squirrel_play(temp, is_summer):
+    return temp >= 60 and (temp <= 90 or (is_summer and temp <= 100))