# More examples of if statements and while loops.

# The following program asks a number of questions to guess what animal
# the user is thinking about.  The aim is to pinpoint the answer by
# asking the user as few questions as possible.

Animals = "tiger,horse,wolf,deer,shark,whale,seal,turtle"
print("think of one of the following animals and I will try to guess which it is:",Animals)

answer = input("Does the animal live on land? ")
if (answer[0] == 'y'):  # if the first letter of the answer is y (yes)
  answer = input("Is it a carnivore? ")
  if (answer[0]=='y'): # land carnivore
    answer = input("Does it hunt in packs? ")
    if (answer[0]=='y'):
       print("The animal is a wolf")
    else:
       print("The animal is a tiger")
  else: #land non-carnivore
    answer = input("Is it a farm animal? ")
    if (answer[0]=='y'):
       print("The animal you're think of is a horse")
    else:
       print("The animal is a deer")
else: # does not live on land
  answer = input("Is it a mammal? ")
  if (answer[0]=='y'): # aquatic mammal
    answer=input("Does it have fur? ")
    if (answer[0]=='y'): print("The animal is a seal")
    else: print("The animal is a whale")
  else: #aquatic non-mammal (shark or turtle)
    answer = input("Does have have a shell? ")
    if (answer[0]=='y'): print("The animal is a turtle")
    else: print("The animal is a fish")

#############

# Nev Erstudy is a student at Hofstra who always keeps the following schedule:

# Weekdays between 2pm and 5pm: in class
# Everyday before 12pm: asleep
# Everyday 12pm-2pm: lunch
# Weekdays after 5pm, or Weekends after 2pm: partying until 3am

# The input of this program will be

day = int(input("Enter day of the week, 0=Sunday: "))  # day is between 0 and 6
hour = int(input("Enter hour of day, 0-23: "))  # 0 is midnight

# Write a program to determine and print out what Nev is doing at this time.

# Each integer hour value is intended to last until the end of the hour,
# e.g. 12 represents 12:00 to 12:59

weekday = (day>0 and day<6)  # monday-friday
asleep = (hour>=3 and hour<12)
lunch = (hour==12 or hour==13)
if asleep: print("Nev is asleep")
if lunch: print("Nev is having lunch")

"""
# there's mistake in the following code, why?

if weekday and hour>=2 and hour <5: print("Nev is in class")
else: print("Nev is partying")
"""           

inclass = weekday and hour>=14 and hour<17
if inclass: print("Nev is in class")
if not(inclass or lunch or asleep):
    print("Nev is at a party")

# You can also use elif:
# if asleep: print("Nev is sleeping")
# elif lunch: ...
# elif weekday and hour>=2 and hour <5: ...
# else: print("Nev is at a party")
    
## Modify Nev's schedule so that on Fridays between 5pm and 10pm, Nev's
# at the movies, and on Sundays from 5pm to 9pm, Nev is having dinner
# at mother's house.


#### One final practice problem (EXERCISE) with if-else statements.
# Let's go to beautiful New Jersey!  Interact with native New Jersians
# and learn about their unique culture.  Driving from Long Island to
# New Jersey could be difficult.  The best route to get there 
# depends on the day of week and time of the day.  Weekday rush
# hours are assumed to be from 6am to 10am and from 4pm to 8pm.
# However, on Fridays, evening rush hour are from 3pm to 8pm.  The best
# time to go would be Saturday or Sunday morning, when traffic is light.

# The routes we will consider are: the Lincoln Tunnel, Holland Tunnel,
# the Verrazzono Narrows Bridge, and the George Washington Bridge.  The
# ALGORITHM is as follows.  

# On Weekends before 10am (<=10), take the Lincoln Tunnel
# On Weekends after 10am, take the Verrazzono Bridge
# During weekday non-rush hours, take the Holland Tunnel
# During weekday rush hours, take the George Washington bridge (and be patient).


day = int(input("Enter day of the week, 0=Sunday, 1=Monday ... 6=Saturday"))
hour = int(input("Enter hour of the day, 0-23")):
if (day<0 or day>6 or hour<0 or hour>23): raise Exception("invalid input")


######################
#Sample while loops

# print all odd numbers from 1 to 100 backwards

n = 99 # starting number
while n>0:
    if n%2==1: print(n,"is odd")
    n = n-1
    # or just n=n-2 without the test.
# end while;  this comment is required if while loop contains more than
# 2 statements in its body.

# generate random number, ask user for guess until user gets it right,
# counts number of guesses:

from random import randint  # built-in function generates random integers

num = randint(1,128)  # random number from 1 to 128, inclusive

print("Guess my number, which is between 1 and 128")
guess = num+1  # start with wrong guess
tries = 0  # counts number of tries
while num != guess and guess!=0:
    guess = int(input("What's your guess? (0 to give up): "))
    tries = tries +1   # equivalent to tries += 1
    if (guess!=0 and guess!=num): print("Wrong!")
    if (guess<0 or guess>127): print("Ha Ha Ha!")
#while wrong guess
if guess==0: print("Quitter!")
else: print("You guessed the number in",tries,"tries")

# modify program to give player option to quit ...
# modify program to give user a chance ...