Added new basic lessons. /JL

Intermediate/basics/mutable_and_immutable_objects.py

@@ -57,3 +57,4 @@ print(id(B))
 # have been created and variable 'B' now points to this object.
 # The same is the case with string objects. Each string object can only contain the string
 # value, it was created with.
+

Intermediate/basics/naming_convention.py

@@ -1,7 +1,7 @@
 """
 Basic naming conventions in python.
 We will be covering the following.
-Variables, functions, classes, methods
+Variables, functions, classes, methods etc.
 """
 
 """

basics/programming_paradigms.py

@@ -0,0 +1,63 @@
+"""
+A short description of the 3 main programming paradigms in Python
+- Object oriented Programming - OOP
+- Procedure Oriented programming
+- Functional programming
+"""
+
+# Object Oriented Programming - OOP
+# This style of programming revolves around objects (classes) as the key element.
+# Lets say you're building cars.
+# A car can be split into several components, each described by a class.
+# i.e. Chassis, Wheels, Engine, Interior
+# At the toplevel, you would have the Car class, storing the other classes as it's attributes.
+# Here's an example
+
+class Chassis:
+    CHASSIS_TYPE = ["Sedan", "Estate", "Pickup"]
+    COLOR = ["Red", "Black", "Emerald"]
+    def __init__(self, type="Sedan", col="Black"):
+        self.type = type
+        self.color = col
+
+class Wheels:
+    RIM_TYPE = ["Steel rim", "Alloy rim"]
+    TYRE_TYPE = ["R16/55 x 195", "R17/50 x 205", "R18/45 x 215", "R18/45 x 225",
+                  "R19/40 x 225", "R19/40 x 235"]
+    def __init__(self, rim="Steel", tyre="R16/55 x 195"):
+        self.rim = rim
+        self.tyre = tyre
+
+class Engine:
+    ENGINE_TYPE = ["Row", "V"]
+    CYLINDER_COUNT = [4, 5, 6, 8]
+    ENGINE_VOLUME = [1.4, 1.6, 1.8, 2.0, 3.0, 4.5]
+    ENGINE_FUEL = ["Diesel", "Petrol", "Hydrogen", "Hybrid"]
+    def __init__(self, type="Row", cyl=4, vol=1.4, fuel="Petrol"):
+        self.type = type
+        self.cylinder = cyl
+        self.volume = vol
+        self.fuel = fuel
+
+class Interior:
+    INTERIOR_TYPE = ["Fabric", "Leather", "Vinyl"]
+    STEERING_WHEEL = ["3-spoke bare", "2-spoke Leather"]
+    def __init__(self, int="Fabric", steering="3-spoke bare"):
+        self.interior = int
+        self.steering_wheel = steering
+
+class Car:
+    def __init__(self, type="Sedan", col="Black", rim="Steel rim",
+                 tyre="R16/55 x 195", engine="Row", cyl=4, vol=1.4, 
+                 fuel="Petrol", int="Fabric", steering="3-spoke bare"):
+        self.chassis = Chassis(type, col)
+        self.wheels = Wheels(rim, tyre)
+        self.engine = Engine(engine, cyl, vol, fuel)
+        self.interior = Interior(int, steering)
+
+# Now we have the classes define with their default values.
+# So now we can create our Car() object like this.
+if __name__ == "__main__":
+    mycar = Car()
+    print(mycar.chassis.type)
+    print(mycar.engine.type, str(mycar.engine.cylinder)+" Cylinder", str(mycar.engine.volume)+" Litre", mycar.engine.fuel)