added labs 2, 3

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Python: Current File",
+            "type": "python",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal"
+        }
+    ]
+}

Demos/Module2/variables_start.py

@@ -2,23 +2,52 @@
 # Demo file for variables
 #
 
-# Declare a variable and initialize it
+# # Declare a variable and initialize it
+# person_name = 'John Smith'
+# person_address = '101 Main Street'
+# print(f'{person_name} lives at {person_address}')
 
-# Inspect the data type
+# # Inspect the data type
+# print(type(person_name))
 
-# re-declaring the variable works
+# # re-declaring the variable works
+# person_name = 1
+# print(person_name)
+# print(type(person_name))
+# print(f'{person_name} lives at {person_address}')
+# print(str(person_name) + " lives at " + person_address)
 
+# # String literals
+# print('John says: "How are you?"')
+# print('''John says: "That is Jenny's car".''')
 
-# ERROR: variables of different types cannot be combined
-#print("this is a string" + 123)
+# # delete definition of variable previously declared
+# del(person_name)
+# print(person_name)
 
-# But this works: variables of different types cannot be combined
+# # data type casting
+# item_price = '12.10'
+# stock_price = 12.15
 
+# result = 25 / 5 
+# type(result)
+# print(result)
 
-# Global vs. local variables in functions
+# print(item_price * 2)
 
-# delete definition of variable previously declared
+# type(item_price)
+# type(stock_price)
 
-# data type casting
+# greeting = 'Hello world'
+# print(greeting.upper())
+# print(greeting.isnumeric())
+# print(len(greeting))
 
-# comparing float numbers
+full_name = input('Please enter Name:')
+
+print(f'You entered: {full_name}')
+
+age = input('Please enter age:')
+print(type(int(age)))
+
+print(f'{full_name} is {age} years old')

Demos/Module3/conditionals_start.py

@@ -6,10 +6,40 @@ def main():
     x, y = 10, 100
 
     # conditional flow uses if, elif, else
+    if( x < y):
+        st = 'x is less than y'
+    elif(x > y):
+        st = 'x is greater than y'
+    else:
+        st = 'x is the same as y'
+
+    print(st)
 
     # conditional statements let you use "a if C else b"
+    st = 'x is less than y' if (x < y) else "x is greater or the same as y"
+
+    print(st)
 
     # conditional logic with IN operator
+    city = "Raleigh"
+    if city in ('Raleigh', 'Charlotte', 'Asheville'):
+        print('You live in North Carolina')
+    else:
+        print('You live somewhere else.')
+
+    if 1.1 + 2.2 == 3.3:
+        print('1.1 + 2.2 == 3.3')
+    else:
+        print('1.1 + 2.2 != 3.3')
+
+    tolerance = 0.00001
+
+    if abs((1.1 + 2.2) - 3.3) < tolerance:
+        print('1.1 + 2.2 == 3.3')
+    else:
+        print('1.1 + 2.2 != 3.3')
+
+
 
 if __name__ == "__main__":
     main()

Demos/Module3/error_handling_start.py

@@ -4,6 +4,19 @@
 
 
 x = 42
-y = 0
+y = '2'
 
 # Division
+try:
+    result = x / y
+except ZeroDivisionError:
+    result = 0
+    print('y cannot be zero')
+except TypeError as e:
+    result = float(x) / float(y)
+    print('Automatically casted string to float')
+except:
+    result = '0'
+    print('Something went wrong!')
+finally:
+    print(f'Result: {result}')

Demos/Module3/functions_start.py

@@ -2,14 +2,23 @@
 #  Example file for working with functions
 #
 
-# define a basic function
+# name = "John Doe"
 
-# function with arguments
+# # define a basic function
+# def some_function():
+#     global name
+#     name = 'James Smith'
+#     return f'Hello, {name}'
 
-# function with return value
+# greeting = some_function()
 
-# function with default value for an argument
+# print(name)
+# print(greeting)
 
-#function with variable number of arguments
 
-# Lambda functions
+# Lambda functions
+def addition(arg1, arg2):
+    return arg1 + arg2
+
+print(addition)
+print((lambda arg1, arg2: arg1 + arg2))

Labs/Lab02/simple_calculator.py

@@ -0,0 +1,10 @@
+#
+# Lab 2
+#
+
+# calculate the circumference of a circle 
+
+radius = float(input("Please enter radius:"))
+pi = 3.1416
+circumference = 2 * pi * radius
+print(f'The circumference is:{circumference}')

Labs/Lab03/simple_calculator.py

@@ -0,0 +1,36 @@
+def add(x, y):
+    return x + y
+def sub(x, y):
+    return x - y
+def mul(x, y):
+    return x * y
+def div(x, y):
+    try:
+        result = x / y
+    except ZeroDivisionError:
+        result = 0
+        print("Cannot divide by zero.")
+    finally:
+        return result
+
+
+operation = input("Please enter operation:")
+first_number = input("Please enter first number:")
+second_number = input("Please enter second number:")
+
+first_number = float(first_number)
+second_number = float(second_number)
+
+if operation.upper() == 'ADD':
+    result = add(first_number, second_number)
+elif operation.upper() == 'SUB':
+    result = sub(first_number, second_number)
+elif operation.upper() == 'MUL':
+    result = mul(first_number, second_number)
+elif operation.upper() == 'DIV':
+    result = div(first_number, second_number)
+else:
+    result = 0
+    print(f'Unknown Operation: {operation}')
+
+print(f"Result: {result}")