stuff

README.md

@@ -1,9 +1,27 @@
-MVC
+Week 3 Day 1
 ============
+Schedule Today:
 
+Morning
+-------
+Weekend Projects Review and Refactor  
+Monty Hall Problem  
+
+Afternoon
+---------
+Bank Software  
+SQL Challenge  
 
 #### Resources
 
 [Optimizing SQL queries](http://beginner-sql-tutorial.com/sql-query-tuning.htm)
 
 [A cool article about your git history](http://mislav.uniqpath.com/2014/02/hidden-documentation/)
+
+[Reading for tonight - the coffee maker problem](http://www.objectmentor.com/resources/articles/CoffeeMaker.pdf)
+
+#### Homework
+
+Finish up your assignments for today.  
+[Also, read this](http://www.objectmentor.com/resources/articles/CoffeeMaker.pdf)
+

exercises/1-monty-hall-problem/README.md

@@ -1,3 +1,5 @@
+50/50 for ever door all the time!
+
 The Monty Hall Problem
 ======================
 

exercises/1-monty-hall-problem/controller.py

@@ -1,6 +1,57 @@
-#from models import
+from models import Doors
 from views import View
 
 class Controller:
 	def __init__(self):
-		pass
+		self.view = View()
+		self.name = self.view.get_name()
+		self.start()
+
+	def start(self):
+
+		selected = False
+		while selected not in ['1', '2', '3']:
+			selected = self.view.display_doors()
+
+		self.doors = Doors(int(selected), self.name)
+
+		self.host_twist()
+
+		return True
+
+	def host_twist(self):
+
+		message =""
+
+		for i in range(1, 4):
+	
+			if i == self.doors.selected:
+				message += '[ X ] '
+			elif i == self.doors.open_door:
+				message += '[ Goat ] '
+			else:
+				message += '[ ' + str(i) + ' ] '
+				other_selection = i
+		selection = False
+		while selection not in ['n', 'y', '']: 
+			selection = self.view.host_twist(message).lower()
+
+		if selection == 'y':
+			self.doors.selected = other_selection
+			self.doors.switch = True
+		return self.out_come()
+
+	def out_come(self):
+		message = 'LOSE'
+		if self.doors.out_come():
+			message = 'WIN'
+
+		replay = self.view.out_come(message)
+
+		if replay in ['', 'y']:
+			return self.start()
+		
+		return exit()
+print('name:', __name__)
+if __name__ == '__main__':
+	Controller()

exercises/1-monty-hall-problem/models.py

@@ -0,0 +1,58 @@
+import sqlite3
+import random
+
+conn = sqlite3.connect('default.db')
+c = conn.cursor()
+
+class Doors:
+    def __init__(self, selected, name):
+        self.name = name
+        self.switch = False
+        self.selected = selected
+        self.car = random.randint(1,3)
+        self.open_door = self.host_twist()
+
+    def host_twist(self):
+        open_door = random.randint(1,3)
+        if open_door == self.car or open_door == self.selected:
+            return self.host_twist()
+        return open_door
+
+    def out_come(self):
+
+        if self.selected == self.car:
+            logDB(self.name, self.switch, True)
+            return True
+        else:
+            logDB(self.name, self.switch, False)
+            return False
+
+def logDB(name, switch, outcome):
+
+
+    c.execute("INSERT INTO games (name, switch, outcome) values (?,?,?) ", (name, switch, outcome))
+
+    conn.commit()
+
+    return True
+
+def seedDB():
+    c.execute("""
+        CREATE TABLE games (
+            id INTEGER DEFAULT NULL PRIMARY KEY AUTOINCREMENT,
+            name TEXT DEFAULT NULL,
+            switch TEXT DEFAULT NULL,
+            outcome TEXT DEFAULT NULL
+        );
+    """)
+
+    conn.commit()
+    conn.close()
+
+if __name__ == '__main__':
+    seed = input('Seed the database[y/n]: ').lower()
+    if seed in ['y', 'yes']:
+        print('seeding')
+        seedDB()
+
+    exit()

exercises/1-monty-hall-problem/schema.sql

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+CREATE TABLE games (
+id INTEGER DEFAULT NULL PRIMARY KEY AUTOINCREMENT,
+name TEXT DEFAULT NULL,
+switch TEXT DEFAULT NULL,
+outcome TEXT DEFAULT NULL
+);

exercises/1-monty-hall-problem/views.py

@@ -1,3 +1,25 @@
 class View:
-	def __init__(self):
+    def get_name(self):
-		pass
+        print('\033c')
+        print('Welcome to the Monty Hall Problem!')
+        return input('Please enter your name: ')
+
+    def display_doors(self):
+        print('\033c')
+        print('Doors: [ 1 ] [ 2 ] [ 3 ]')
+        return input('Select door: ')
+
+    def host_twist(self, message):
+        print('The host will revel where one goat is...')
+        print(message)
+        print('Would you like to change your selection? [n/y]')
+        return input('[n]: ')
+
+    def out_come(self, message):
+        print('You {}!!!'.format(message))
+        return input('Play again?[y]')
+
+if __name__ == '__main__':
+    print('Please opne controller.py')
+    exit()
+    

exercises/2-bank-software/README.md

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+Your Own Private Bank
+======================
+
+Welcome back! In this challenge you'll be creating a rich Python terminal app emulating bank software.
+
+###Step 1: Database  
+Our DB schema for this challenge is simple. For now, we only need two tables - Users and accounts. A user can have many accounts. Users should have at minimum a username to log in to the app, a time when they were created, and a permissions level. An account should have a number and a balance. Design the schema in SQL designer if it helps you.
+
+There's a file called create_db.py - write your sql that creates the db in there to keep everything organized.
+
+###Step 2: Our program models
+We need two different classes for users - a client, and a banker. A client should be able to view all their accounts, deposit and withdraw funds to and from their OWN accounts, and transfer money from their OWN accounts to another user account. A banker should be able to create accounts, deposit and withdraw funds from ANY user account, and transfer money between ANY two user accounts. A banker should not have any accounts (no co-mingling of funds) and a person should not see the superuser options that bankers have. How you want to design this is up to you. See [inheritance](http://www.jesshamrick.com/2011/05/18/an-introduction-to-classes-and-inheritance-in-python/)
+
+I also strongly recommend that you have another class (see [static methods](https://julien.danjou.info/blog/2013/guide-python-static-class-abstract-methods)) or a module that handles only reading and writing to the database. 
+
+###Step 3: Controller and Views
+Stick to the MVC pattern - No spaghetti code! Keep your code dry. There's alot of user choice options which could be alot of if/else statements - can you think of a better way?
+
+Present a nice clean interface to the user for the options they are allowed to perform. Some extra account details would be nice to display - some ideas are how long the user has been a member of the bank, which banker created their account, etc.

exercises/2-bank-software/bank_controller.py

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+import bank_models
+import bank_views

exercises/2-bank-software/bank_models.py

@@ -0,0 +1 @@
+import sqlite3

exercises/2-bank-software/create_db.py

@@ -0,0 +1 @@
+import sqlite3

exercises/3-sql/README.md

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+Loan or No Loan?
+================
+
+Here is some people's last month bank statements. Query the database to answer the questions. Write methods to return all of the information to you. Don't do this manually.
+
+* How many people are there in the database?
+* What is each persons salary (return their name and salary)?
+* What is each persons net income?
+* How about their highest expense?
+* What percent of their salary did they spend?
+* What was the average price of their expenses (don't include salary)?
+* How many expenses did each person have?
+* How many things did each person buy in the first week of the month? How much money did they spend?
+* How about in the last week?
+* Print everything bought between $40 and $60.
+* Using the mortgage calculator you built before (some adjustments will need to be made), how large of a house could each person afford on a 15 year mortgage at 4%, if they plan on saving $200 a month (assuming they keep their jobs and spend the same amount).
+* Write the database to a csv.