CS1026 - Lab Solutions

# Lab 1:
# Task 1
# TODO: type solution here
print("I am learning Python")

# Task 2
# TODO: type solution here
answer = 3 + 5
print(answer)

# Task 3
# TODO: type solution here
print("My first python code")
variable1 = 46*2
variable2 = 3+5

print(variable1)
print(variable2)

print("everything works")

# Lab 2:
# Task 1
# TODO: type solution here
x=7
print(x+5)
print((x+5)*3)
print(x+5*3)
# why are the last two different?
# because of order of operations
#add your own!

# Task 2
# TODO: type solution here
print(2<5)
print(2<=2)
print(2!=5)
print(2==2)# 2 equals signs checks equality of something one equals sign is an assignment operator
#try printing 2=2
#delete the #   to uncomment and test it
#print(2=2)
#add your own!

print(5>2)

# Task 3
# TODO: type solution here
print("CS" + "1026")
print("CS" + " "+ "1026")
print("CS "+"1026")
#notice the space differences
#add your own!

print("hi " + "there")

# Task 4
# TODO: type solution here
#lets try some simple formatting
name= "Sterling Archer"
age = 36

#two ways of formatting strings
# the first is called interpolation in this case %s represents a string and is the first element
# %d represents an integer and is the second element in the list
print("%s %d" % (name, age))
# the second calls a format function it replaces the {} with the variables in the format function in order

print("{} {}".format(name,age))
#add your own!


day = "Friday"
month = "November"
year = 2015

print("{}, {}, {}".format(day, month, year))

# Task 5
# TODO: type solution here
x =7
print(x)
y =x+5
print("x is {} and y is {}".format(x,y))
x=x+5
#note the value changes when we do the statement above
print("x is now {}".format(x))
y= x+5
# if we repeat the second print what will we get?
print("x is {} and y is {}".format(x,y))
#add your own!

a = 10
b = a + 5
print("a is {} and b is {}".format(a, b))

a = a + 10
b = a + 5

print("a is {} and b is {}".format(a, b))

# Task 6
# TODO: type solution here
#we assign some variables and check an expression note how we checked the expression with format
x = -1
y =0
print("is it true that x<= y?")
print("It's {} !".format((x<=y)))

a= 2.5
b=5
# notice how these two print statements give different results why is that?
print(a*b)
print(int(a *b))

print("She said, hey there")
#note how you can use escape sequences to format your strings as well
print("She said,\n hey there")
#add your own!

c = 3.3
d = 2
print("The answer is \n{}".format(int(c * d)))

# Task 7
# TODO: type solution here
#note how to get input from the keyboard
celsius = float(input("Please type the Celsius value in"))
# notice how we had to cast celsius to float try removing the float cast and seeing what happens

#note 1.8 is 9/5
#fDegrees stores the Fahrenheit value
fDegrees= (celsius * 1.8 )+ 32
print(fDegrees)
# when you take a value from input it is a string value by default therefore you must convert it to whatever
# other value you may use if need be

# Task 8
# TODO: type solution here
fahrenheit = float(input("Please enter the temperature in fahrenheit - "))

celsius = (fahrenheit - 32) * 5/9

print(celsius)

# Lab 3:
# Task 1
# TODO: type solution here
x=5

#is x > 5?

if x > 5:
    print("X is larger than 5")
else:
    print("X is smaller than or equal to 5")

# Task 2
# TODO: type solution here
a=12
b=7
t =True
c='e'

print((a > 0) ==  (b > 0))

print(('a' > c)  != ('E' != c))

print((a % b != 0) and (b * 2 > a))

print((t or not(a > b)) and t)

# Task 3
# TODO: type solution here
from datetime import datetime
hour = datetime.now().hour

if hour == 12:
    timeOfDay = "Morning"
elif hour > 12 and hour <= 18:
    timeOfDay = "Afternoon"
else:
    timeOfDay = " Evening"

print("Good {}, world".format(timeOfDay))

# Lab 4:
# Task 1
# TODO: type solution here
count = 1
while count <= 10:
    print(count)
    count = count + 1
    #two statements in the loop

# Task 2
# TODO: type solution here
#place your code here
for i in range (1, 11, 2):
    print(i)

# Task 3
# TODO: type solution here
#place outer loop here
for i in range (5):
    for x in range(1,11):
        print(x)

# Task 4 *May not be right*
# TODO: type solution here
from random import randint
name = input("please enter your name")

# place your code here
i = 0
while i in range (20):
    print("test")
    i = i + 1
    if i % 2:
        rando = randint(1,10)
        print(rando)
    if i % 3:
        print(name)

# Lab 5:
# Task 1
# TODO: type solution here
def addNumbers(a,b):
    add = a + b
    return add

print(addNumbers(3,5))

# Task 2
# TODO: type solution here
#write your function here

def factorial(a):
   if a == 0:
       return 1
   else:
       return a * factorial(a - 1)

print(factorial(5))
print(factorial(7))
print(factorial(9))

# Task 3
# TODO: type solution here

# place helloWorld() here
def helloWorld():
    print("Hello World")

# place helloWorldNTimes here
def helloWorldNTimes(n):
    while n != 0:
        helloWorld()
        n = n - 1


def main():
    helloWorldNTimes(7)


main()

# Task 4
# TODO: type solution here
#place your function here
def isMultiple(i):
    if not i % 7:
       return i
    else:
        return -1


def checkMultiples():
    for i in range(1,100):
        cur = isMultiple(i)
        if cur != -1:
            print(cur)


checkMultiples()

print(7 % (7 * 15))

# Lab 6
# Task 1, 2, 3 are giving errors so are not included.
# Task 4
# TODO: type solution here
def zFirst(words):
    result =[]
    result2 =[]
    for word in words:
        if word.lower()[0] == 'z':
            result.append(word)
        else:
            result2.append(word)

    result.sort()
    result2.sort()
    return result + result2



words=["hello","good","nice","as","at","baseball","absorb","sword","a","tall","so","bored","silver","hi"
,"pool","we","I","am","seven","Do","you","want","ants","because","that's","how","you","get","zebra","zealot","Zaire"]
print(zFirst(words))

# Lab 7:
# Guess I dont have this on either sorry.

# Lab 8:
# Task 1
# TODO: type solution here

try:
    f=open("thefile.file","r")
    line in f.readline()

except IOError:
    print("Error, file not found.")

# Task 2
# Not checking *
# TODO: type solution here
count = 0
for i in range(10):
    #  count += 1
    try:
        try:
            print(7/i)
        finally:
           if i == 9:
                print(i)

    except ZeroDivisionError as exception:
            print("Error, ", str(exception))

# Task 3
# TODO: type solution here
values =[1,2,3,4,5,"hello",6,7,8,9,"10"]

for cur in values:
    if type(cur) == str:
        raise TypeError("This is a string!")
    else:
        print("the value is :", (cur))


# Lab 9:
# Task 1
episode4 = {"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Greedo","Kenobi"}
episode5 = {"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Tauntaun","Yoda","Lando"}
episode6 = {"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Palpatine","Ackbar","Jabba","Rancor","Boba"}

# code for union under here call your set unEps
unEps = episode4.union(episode5, episode6)
print(len(unEps))

# Task 2
episode4 = {"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Greedo","Kenobi"}
episode5={"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Tauntaun","Yoda","Lando"}
episode6={"Luke","Leia","Han","Chewie","C3PO","R2-D2","Vader","Palpatine","Ackbar","Jabba","Rancor","Boba","Yoda"}

#code to create intersection of 4 and 5 then take episode 6 and difference that with the intersection of 4 and 5
episode45 = episode4.intersection(episode5)

final = episode6.difference(episode45)

print(len(final))

# Task 3
sentence ="I had such a horrible day. It was awful so bad sigh. It could not have been worse but actually though "\
          +"such a terrible horrible awful bad day."

makeItHappy ={"horrible":"amazing","bad":"good","awful":"awesome","worse":"better","terrible":"great"}

sentence = sentence.split()

print(sentence)


for i in range(len(sentence)):
    if sentence[i] in makeItHappy:
        sentence[i]=makeItHappy[sentence[i]]

newString = ""
for word in sentence:
    newString = newString+" "+word
print(newString)


# Task 4
# name = ["Stirling","Lana","Cyril","Pam","Ray","Cheryl"]
alias = ["Duchess","Truckasaurus","Chet","Cookie Monster","Gilles de Rais","Cherlene"]

newdict = {}

for i in range(len(name)):
    newdict[name[i]] = alias[i]

for bbhbh in sorted(newdict):
    print(bbhbh,":", newdict[bbhbh])

# Task 5

import math
#check if number is prime not overly efficient
def prime(n):
    if n==1 or n==0:
        return False
    for x in range(2,int(math.sqrt(n)+1)):
        if n%x == 0:
            return False
    return True

#place your code here

import math
#check if number is prime not overly efficient
def prime(n):
    if n==1 or n==0:
        return False
    for x in range(2,int(math.sqrt(n)+1)):
        if n%x == 0:
            return False
    return True

dict ={}
dict['even']={x for x in range(0,100) if x %2 ==0}
dict['odd']={x for x in range(0,100) if x %2 ==1}
dict['three']={x for x in range(0,100) if x %3 ==0}
dict['five']= {x for x in range(0,100) if x %5 ==0}
dict['prime']={x for x in range(0,100) if prime(x)}

print(dict)

# Lab 10:
# Task 1
# TODO: type solution here
class Banana:
    bananaID =0
    def __init__(self):
        Banana.bananaID+=1
        self._ID = Banana.bananaID
    def __str__(self):
        return "This banana has an id of "+ str(self._ID)


b1 = Banana()
b2 = Banana()


print(b1)
print(b2)

# Task 2
# TODO: type solution here
class Dinosaur:

    def __init__(self):
        self._type = ""

    def setType(self, type):
        self._type = type

    def getType(self):
        return self._type


d1= Dinosaur()
d2= Dinosaur()
d3 = Dinosaur()

d1.setType("T-Rex")
d2.setType("Velociraptor")
d3.setType("Stegosaurus")

print(d1.getType(),d2.getType(),d3.getType())


# Task 3
# TODO: type solution here
class Coffee:

    def __init__(self):
        self._coffee = ""

    def __add__(self, other):
        if isinstance(other,Cream):
            return "Yum"


class Cream:

    def __init__(self):
        self._cream = ""


coffee = Coffee()
cream= Cream()

print(coffee+cream)

# Lab 11:
# Task 1
# TODO: type solution here
class Fruit:

    def __init__(self):
        self.shape = ""
        self.colour = ""

    def canBePhone(self):
        return "fruits can't be phones..."

class Banana(Fruit):
    def __init__(self):
        super().__init__()

    def canBePhone(self):
        return "Ring ring ring ring ring ring ring banana phone\nBeep-boo-ba-boo-doo-ba-doop"

banana = Banana()
strawberry = Fruit()

print(banana.canBePhone())
print(strawberry.canBePhone())


# Task 2
# TODO: type solution here
class Bicycle:
    def __init__(self):
        self._gear = 0
        self._cadence = 0
        self._speed = 0

    def setGear(self, gear):
        self._gear = gear

    def setCadence(self, cadence):
        self._cadence = cadence

    def setSpeed(self, speed):
        self._speed = speed

    def getGear(self):
        return self._gear

    def getCadence(self):
        return self._cadence

    def getSpeed(self):
        return self._speed

    def applyBrake(self, brake):
        self._speed = self._speed - brake
        return self._speed

    def speedUp(self, acceleration):
        self._speed = self._speed + acceleration
        return self._speed

class MountainBike(Bicycle):
    def __init__(self):
        super().__init__()
        self._height = 0

    def setHeight(self):
        self._height = height

    def getHeight(self):
        return self._height



b1 = Bicycle()
b1.setSpeed(100)
b1.applyBrake(8)

mb1 = MountainBike()
mb1.setSpeed(100)
mb1.speedUp(20)


print(b1.getSpeed())
print(mb1.getSpeed())


# Task 3
# TODO: type solution here
class Pet:
    def __init__(self):
        self.name = ""
        self.species = ""

class Dog(Pet):
    def __init__(self):
        super().__init__()
        self.doesDogChaseCats = False

    def setChaseCats(self,chase):
        self.doesDogChaseCats=chase

    def chaseCats(self):
        return self.doesDogChaseCats

class Cat(Pet):
    def __init__(self):
        super().__init__()
        self.doesCatHateDog = False

    def setHatesDogs(self, hate):
        self.doesCatHateDog = hate

    def hatesDogs(self):
        return self.doesCatHateDog

dog=Dog()
dog.setChaseCats(False)

cat = Cat()
cat.setHatesDogs(True)

print(cat.doesCatHateDog)
print(dog.doesDogChaseCats)

# Task 4
# Don't have task 4