[Courses] [python] Lesson 6: Functions and dictionaries

[lenore borisova]

Below are my answers for Lesson 6:



[Courses] [python] Lesson 6: Functions and dictionaries

1. Random dictionary-o-rama

import random

carracks = { "Mayflower"     :   "Christopher Jones",
                     "Santa Maria"   :   "Juan de la Cosa",
                          "Victoria"      :   "Ferdinand Magellan",
                     "Sao Gabriel"   :   "Vasco da Gama"
                    }


def ships(carracks):
        ship = random.choice(carracks.keys())
        master = carracks[ship]
        return (ship, master)

(ship,master) = ships(carracks)

print "Famous carrack: " + ship + " and its master: " + master

----------------------------------------------------------

2. Flashcards

import random, sys

elements = {
         "He"    :       "helium",
          "N"     :       "nitrogen",
         "Se"    :       "selenium",
          "Bi"    :       "bismuth",
         "Na"    :       "sodium",
         "Rb"    :       "rubidium",
          "Sn"    :       "tin",
         "Mg"    :       "magnesium",
          "Os"    :       "osmium",
          }


def chem(elements):
        symbol = random.choice(elements.keys())
        answer = elements[symbol]
        return (symbol, answer)

def ui():
        print "*" * 60

(symbol, answer) = chem(elements)

ui()
print "PERIODIC TABLE FLASHCARDS"
print "Press the ENTER key when you are ready to see the answer (q to quit)"
ui()

while True:
        user  = raw_input(symbol)
        if user == "q" :
                ui()
                print "\nThanks for playing!"
                break
        print answer
        (symbol, answer) = chem(elements)


----------------------------------------------------------

3. User Input - For the correct/incorrect answer part, mine has both the
immediate feedback of a correct/incorrect answer and also the total in
numeric form of questions that were correct as well as the total number that
the user answers - those display after the user types q to quit. I also
removed an element from the dictionary after it was already asked so that it
would not mess up the number of questions asked (no repeats).



import random, sys

elements = {
        "He"    :       "helium",
        "N"     :       "nitrogen",
        "Se"    :       "selenium",
        "Bi"    :       "bismuth",
        "Na"    :       "sodium",
        "Rb"    :       "rubidium",
        "Sn"    :       "tin",
        "Mg"    :       "magnesium",
        "Os"    :       "osmium",
        }


def chem(elements):
        symbol = random.choice(elements.keys())
        answer = elements[symbol]
        return (symbol, answer)

def ui():
        print "*" * 60

def counts():
        print "Time is up! You answered ",
        print tally,
        print "correctly, out of ",
        print total

(symbol, answer) = chem(elements)

ui()
print "PERIODIC TABLE QUIZ"
print "Type the element name and press ENTER (q to quit)"
ui()

tally = 0
total = 0

while True:
        print "Element symbol: " + symbol
        maybe = raw_input("Element name: ")
        maybe = maybe.strip()
        maybe = maybe.lower()
        if maybe == "q":
                ui()
                counts()
                ui()
                break
        else:
                if len(elements) == 1:
                        ui()
                        counts()
                        ui()
                        break
                else:
                        if maybe == answer:
                                print "correct :)\n"
                                print len(elements)
                                tally += 1
                        else:
                                print "incorrect :(\n"

                        del elements[symbol]
                        (symbol, answer) = chem(elements)
                        total += 1