4 Exercises

ex1.py

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+print "Hello World!"
+print "Hello Again"
+print "I like typing this."
+print "This is fun"
+print "Yo yo yo"
+print "Printing along with the instructions"
+print "But I rebelled slightly."
+print "I did more than he said and different starting with yo."
+print ""
+print "Yo!"
+print #"hi"

ex2.py

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+# Comments for reading how your program works later.
+
+
+
+print "Code before comments" # Prints "Code before comments"
+
+# Disabled code. Non-functional
+# print "Won't run."
+
+print "This will run."
+
+# A comment, this is so you can read your program later.
+# Anything after the # is ignored by python.
+
+print "I could have code like this." # and the comment after is ignored.
+
+# You can also use a comment to "disable" or comment out a piece of code:
+# print "This won't run."
+
+print "This will run."

ex3.py

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+print "I will now count my chickens:" # Prints text
+
+print "Hens", 25.0 + 30.0 / 6.0 # Divides, then adds the numbers together.
+print "Roosters", 100.0 - 25.0 * 3.0 % 4.0 # Multiplies 25 and 3, then runs 75 mod 4 which is 3, then subtracts that from 10.00.0.
+
+print "Now I will count the eggs:" # More text.
+
+print 3.0 + 2.0 + 1.0 - 5.0 + 4.0 % 2.0 - 1.0 / 4.0 + 6.0 #
+
+print "Is it true that 3 + 2 < 5 - 7"
+
+print 3.0 + 2.0 < 5.0 - 7.0
+
+print "What is 3 +2?", 3.0 + 2.0
+print "What is 5 -7?", 5.0 - 7.0
+
+print "That's why it's False."
+
+print "How about some more?"
+
+print "Is it greater?", 5.0 > -2.0
+print "Is it greater or equal?", 5.0 >= -2.0
+print "Is it less or equal?", 5.0 <= -2.0

ex4.py

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+# Number of cars
+cars = 100
+# Number of people that can be fit in each car.
+space_in_a_car = 4.0
+# Number of people driving.
+drivers = 30
+# Number of passengers riding.
+passengers = 90
+# Number of cars not driven.
+cars_not_driven = cars - drivers
+# Number of cars driven.
+cars_driven = drivers
+# The total number of people that can ride in each car.
+carpool_capacity = cars_driven * space_in_a_car
+# The average number of passengers in each car.
+average_passengers_per_car = passengers / cars_driven # Line number 8, the first time, he tried to do car_pool_capacity instead of carpool_capacity
+
+print "There are", cars, "cars available."
+print "There are only", drivers, "drivers available."
+print "There will be", cars_not_driven, "empty cars today."
+print "We have", passengers, "to carpool today."
+print "We need to put about", average_passengers_per_car, "in each car."
+
+# 1. I used 4.0 for space_in_a_car, but is that necessary? What happens if it's just 4? Nothing changes in this case.
+# 2. Remember that 4.0 is a floating point number. It's just a number with a decimal point, and you need 4.0 instead of just 4 so that it is floating point.
+# 3. Write comments above each of the variable assignments.
+# 4-6 completed as well.