diff --git a/src/cityreader/cityreader.py b/src/cityreader/cityreader.py
index 2bd8007ce7..dc5b4c09d5 100644
--- a/src/cityreader/cityreader.py
+++ b/src/cityreader/cityreader.py
@@ -1,6 +1,14 @@
 # Create a class to hold a city location. Call the class "City". It should have
 # fields for name, lat and lon (representing latitude and longitude).
 
+class City:
+    def __init__(self, name, lat, lon):
+        self.name = name
+        self.lat = lat
+        self.lon = lon
+
+    def __str__(self):
+        return f"City: {self.name}, Latitude: {self.lat}, Longitude: {self.lon}"
 
 # We have a collection of US cities with population over 750,000 stored in the
 # file "cities.csv". (CSV stands for "comma-separated values".)
@@ -9,11 +17,14 @@
 # to read this file so that each record is imported into a City instance. Then
 # return the list with all the City instances from the function.
 # Google "python 3 csv" for references and use your Google-fu for other examples.
-#
+
 # Store the instances in the "cities" list, below.
 #
 # Note that the first line of the CSV is header that describes the fields--this
 # should not be loaded into a City object.
+
+import csv
+
 cities = []
 
 def cityreader(cities=[]):
@@ -21,7 +32,14 @@ def cityreader(cities=[]):
   # Ensure that the lat and lon valuse are all floats
   # For each city record, create a new City instance and add it to the 
   # `cities` list
-    
+  # 
+
+    with open('src/cityreader/cities.csv', newline='') as csvfile:
+        CityReader = csv.DictReader(csvfile)
+
+        for row in CityReader:
+            print(cities.append(City(row['city'], row['lat'], row['lng'])))
+        
     return cities
 
 cityreader(cities)
diff --git a/src/comp/comp.py b/src/comp/comp.py
index 82f8821d63..9e75ef6c19 100644
--- a/src/comp/comp.py
+++ b/src/comp/comp.py
@@ -24,48 +24,48 @@ def __repr__(self):
 # Write a list comprehension that creates a list of names of everyone
 # whose name starts with 'D':
 print("Starts with D:")
-a = []
+a = [ human.name for human in humans if human.name[0] == 'D' ]  
 print(a)
 
 # Write a list comprehension that creates a list of names of everyone
 # whose name ends in "e".
 print("Ends with e:")
-b = []
+b = [ human.name for human in humans if human.name[-1] == 'e' ]
 print(b)
 
 # Write a list comprehension that creates a list of names of everyone
 # whose name starts with any letter between 'C' and 'G' inclusive.
 print("Starts between C and G, inclusive:")
-c = []
+c = [ human.name for human in humans if human.name[0] in ['C','D','E','F','G']]
 print(c)
 
 # Write a list comprehension that creates a list of all the ages plus 10.
 print("Ages plus 10:")
-d = []
+d = [ human.age + 10 for human in humans ]
 print(d)
 
 # Write a list comprehension that creates a list of strings which are the name
 # joined to the age with a hyphen, for example "David-31", for all humans.
 print("Name hyphen age:")
-e = []
+e = [f'{human.name}-{human.age}' for human in humans]
 print(e)
 
 # Write a list comprehension that creates a list of tuples containing name and
 # age, for example ("David", 31), for everyone between the ages of 27 and 32,
 # inclusive.
 print("Names and ages between 27 and 32:")
-f = []
+f = [(human.name, human.age) for human in humans if 27 <= human.age <= 32  ]
 print(f)
 
 # Write a list comprehension that creates a list of new Humans like the old
 # list, except with all the names uppercase and the ages with 5 added to them.
 # The "humans" list should be unmodified.
 print("All names uppercase:")
-g = []
+g = [Human(human.name.upper(), human.age + 5)for human in humans]
 print(g)
 
 # Write a list comprehension that contains the square root of all the ages.
 print("Square root of ages:")
 import math
-h = []
+h = [ math.sqrt(human.age) for human in humans ]
 print(h)
diff --git a/src/oop/oop1.py b/src/oop/oop1.py
index b7268c5263..556b37dbdd 100644
--- a/src/oop/oop1.py
+++ b/src/oop/oop1.py
@@ -17,3 +17,25 @@
 #     pass
 #
 # Put a comment noting which class is the base class
+
+class Vehicle:
+    # Base Class
+    pass
+
+class FlightVehicle(Vehicle):
+    pass
+
+class Starship(FlightVehicle):
+    pass
+
+class Airplane(FlightVehicle):
+    pass
+
+class GroundVehicle(Vehicle):
+    pass
+
+class Car(GroundVehicle):
+    pass
+
+class Motorcycle(GroundVehicle):
+    pass
diff --git a/src/oop/oop2.py b/src/oop/oop2.py
index 29d3e481fe..950cfa701a 100644
--- a/src/oop/oop2.py
+++ b/src/oop/oop2.py
@@ -4,11 +4,13 @@
 # object is constructed.
 
 class GroundVehicle():
-    def __init__(self, num_wheels):
+    def __init__(self, num_wheels = 4):
         self.num_wheels = num_wheels
 
-    # TODO
+    def drive(self):
+        return "vroooom"
 
+    # TODO
 
 # Subclass Motorcycle from GroundVehicle.
 #
@@ -19,10 +21,17 @@ def __init__(self, num_wheels):
 
 # TODO
 
+class Motorcycle(GroundVehicle):
+    def __init__(self):
+        super().__init__(2)
+
+    def drive(self):
+        return 'BRAAAP!!'
+
 vehicles = [
     GroundVehicle(),
     GroundVehicle(),
-    Motorcycle(),
+    Motorcycle(),   
     GroundVehicle(),
     Motorcycle(),
 ]
@@ -30,3 +39,6 @@ def __init__(self, num_wheels):
 # Go through the vehicles list and print the result of calling drive() on each.
 
 # TODO
+
+for engines in vehicles:
+    print(engines.drive())