Week 1 Assignments complete.

Author: mcwebtree

Assessment/WK1/breakeven.jpg

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+# calculate break even point for business
+
+# Params
+dbl_cost = 20.00
+dbl_sale = 40.00
+dbl_fixed_costs = 50000.00
+
+# Calculate profit
+dbl_profit = dbl_sale - dbl_cost
+
+# Get sale count to meet fixed costs
+int_BE_sales = int( dbl_fixed_costs / dbl_profit )
+
+# check if there is a residual amount and if so increase the min qty
+# by one as you can't sell a fraction of a product
+if ( ( dbl_profit * int_BE_sales ) < dbl_fixed_costs ) :
+    int_BE_sales +=1
+
+# Output the results
+print ( "Welcome to the Widget Factory break even calculator" )
+print ( "-" * 55 )
+print( f'Widgets cost £{dbl_cost:.2f} and sell for £{dbl_sale:.2f}')
+print( f'We make a profit of {dbl_profit:.2f} per widget.' ) 
+print( f'Our fixed costs are £{dbl_fixed_costs:.2f}.' )
+print( f'Therefore we need to sell {int_BE_sales} items to break even.')

Assessment/WK1/breakeven.py

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+# Calculate paint coverage and can box amounts. 
+
+# import packages
+import math
+
+# params
+fl_coverage = 5.1 # m2 of wall 
+# I'm using a dictionary as an array of dimensions, I mused on a list or a tuple too, but went for dict for clarity
+t_can_dims = { "Diameter": 15, "Height" : 30 } # cm
+t_box_dims = { "Length": 0.60, "Width": 0.30, "Height": 0.35 }  # meters (I assume). 
+t_hall_dims = { "Length": 40, "Width": 30, "Height": 3.4 } # meters
+
+# ASSUMPTIONS
+# The hall has no doors
+# The hall has no windows
+# The floor and ceiling aren't being painted
+
+# Calculate amount of paint required
+# ( 2 x length + 2 x width ) * height
+int_hall_wall_area = ( (( t_hall_dims["Length"] * 2 ) + (t_hall_dims["Width"] * 2)) * t_hall_dims["Height"] )
+int_cans_required = math.ceil ( int_hall_wall_area / fl_coverage )
+t_cans_per_box = { "ByLength" : math.floor ( t_box_dims["Length"] / ( t_can_dims["Diameter"] / 100 ) ),
+                    "ByWidth" : math.floor ( t_box_dims["Width"] / ( t_can_dims["Diameter"] / 100 ) ),
+                    "ByHeight" : math.floor ( t_box_dims["Height"] / ( t_can_dims["Height"] / 100 ) )
+                }
+int_cans_per_box = t_cans_per_box["ByWidth"] * t_cans_per_box["ByLength"] * t_cans_per_box["ByHeight"]
+int_full_boxes = math.floor ( int_cans_required / int_cans_per_box )
+int_loose_cans = int_cans_required % int_cans_per_box
+
+print ( 'Welcome to the Shaggy Dog Paint calculator')
+print ( '-' * 42 )
+print ( f'Using paint cans with diameter {t_can_dims["Diameter"]}cm and height {t_can_dims["Height"]}cm providing coverage of {fl_coverage}m2.')
+print ( f'Painting a hall with length {t_hall_dims["Length"]}m, width {t_hall_dims["Width"]}m and height {t_hall_dims["Height"]}m.')
+print ( f'This will require {int_cans_required} cans of paint.')
+print ( f'Supplying {int_cans_per_box} cans per box this will require {int_full_boxes} boxes and {int_loose_cans} loose cans.')

Assessment/WK1/cans_of_paint.jpg

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+a.A company’s profit
+Decimal - Because this allows for the correct level of precision for 
+
+b.A person’s weight
+It depends on what unit of measure you're using to weigh the individual. 
+If KG or LB: Float would work due to the decimal values. 
+If ST & LB: 1 String or 2 Integers due to the need to store 2 values.
+
+c.A book title
+String - It's a text value that can contain the widest range of characters. 
+
+d.Average rainfall in September
+Float - Because this allows for decimal numeric values to be recorded.
+
+e.Number of runs scored by a cricketer
+Integer - A numeric value with no need to a decimal component. 
+
+f.A telephone number, including area code
+String - Because it makes formatting and storing the numbers far safer than a numerical variable type.
+
+g.A dress size
+Depends on the sizing scheme.
+If its a numerical scheme, (8, 10, 12), then an integer will work. 
+If its a text based scheme, (S, M, L), then a string will be required. 

Assessment/WK1/cans_of_paint.py

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+# exercise to debug code
+name = "John Smith"  # remove one character
+occupation = "Student"  # replace one character
+location = 'Stoke-on-Trent'  # replace one character
+activity_level = "moderate"  # replace one character (too many spaces)
+
+print("My name is", name) #add one character
+print("I am a student in " + location)  # no errors in this line
+age = 21  # remove a character
+
+print("I am " + str(age) + " years of age with a", activity_level, "activity level")
+# add one character and replace one character

Assessment/WK1/datatypes.txt

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+# output Hello World
+print("Hello World")
+print("Welcome to Python")