session 1 materials

Author: djrrb

session-1/0-namesInRandomOrder.py

@@ -0,0 +1,37 @@
+# this is the silly script I wrote at the beginning of class
+# to randomize the order of names
+# but here I have saved it with fake names
+
+# import our friend the random Library
+# we will use it to randomize the order of the names
+import random
+
+# i just copy/pasted the names from a spreadsheet so they came in this big ugly text block
+# i used three quotes """ to designate a multi-line string
+theNames = """Fidela    Laws
+Angelica    Courtney
+Jess    Bouck
+Carley  Vallone
+Cameron Balmer
+Newton  Panella
+Ardith  Eggleston
+Genaro  Hilson
+Vanetta Cockrill
+Valentine   Mccleary
+Buddy   Choiniere"""
+
+# to convert these names into a proper python list, we will split the string every time we encounter a newline ('\n')
+namesList = theNames.split('\n')
+
+# now that we have a list, we can put its contents in a random order using the shuffle() function, which lives in the random library
+random.shuffle(namesList)
+
+# now that the list is randomized
+# we can loop through it and print each result in the random order
+# for each name in our list, we will assign it to the variable theName
+for theName in namesList:
+    # i only want to print first names
+    # so I will split the name by tabs, and grab the first item from that list
+    firstName = theName.split('\t')[0]
+    # ok let’s print the first name
+    print(firstName)

session-1/1-helloWorld.py

@@ -0,0 +1,5 @@
+# use the print function to output the string "hello world"
+print('hello world')
+
+# also works with double quotes
+print("hello world")

session-1/2-math.py

@@ -0,0 +1,32 @@
+# let’s do some math
+
+print('addition')
+print(1 + 1)
+
+print('subtraction')
+print(2 - 1)
+
+print('multiplication')
+print(2 * 2)
+
+print('division')
+# ooh tricky, the result is a floating number, not an integer anymore!
+print(5 / 2)
+
+print("floor division")
+# how many times does B go into A
+print(5 // 2)
+# and let’s grab the remainder
+print(5 % 2)
+# 2 goes into 5 two times with 1 left over
+
+print('order of operations')
+# please = parentheses
+# excuse = exponents
+# my = multiplication
+# dear = division
+# aunt = addition
+# sally = subtraction
+print(5*5+2)   # this is really 25+2 = 27
+print(5*(5+2)) # this is really 5*7 = 35
+

session-1/3-variables.py

@@ -0,0 +1,16 @@
+print('let’s do some math with numbers')
+print(16 // 5)
+print(16 % 5)
+# but we had to type 16 twice and 5 twice, what a pain to change!
+
+print('now let’s do the same thing with variables')
+
+# we only type these numbers once
+bigNum = 16
+littleNum = 5
+
+# and now we just reference them
+howMany = bigNum // littleNum
+remainder = bigNum % littleNum
+print( howMany )
+print( remainder )

session-1/4-simpleGrid.py

@@ -0,0 +1,41 @@
+# define the width and height of the new page
+#       w     h
+newPage(1000, 1000)
+
+# define x and y as where we start? (0, 0) is in the bottom left
+x = 0
+y = 0
+
+# define how many rows and columns
+rows = 10
+cols = 10
+
+# define the width and height of each unit of the grid
+gridWidth = 100
+gridHeight = 100
+
+# define the width and height of the shape we will draw in that grid
+shapeWidth = 100
+shapeHeight = 100
+
+# ok it’s time to loop
+# first we will loop through each row
+# and then WITHIN that loop we will loop through each column
+# for theThing in theRangeOfThings
+for row in range(rows):
+    # everything indented this much runs once for each row
+    for col in range(cols):
+        # everything indented this much 
+        # runs once for each column 
+        # within each row (one grid unit)   
+        #    x   y   w    h
+        oval(x, y, shapeWidth, shapeHeight)
+        x += gridWidth
+    # we are OUTDENTED, which means we are back 
+    # to code that only runs once per row
+    # now that we’ve reached the end of the row
+    # we want to advance y to move us up to the next row
+    y += gridHeight
+    # and we want to return x to its original position
+    # (a carriage return, essentially)
+    x -= cols*gridWidth

session-1/5-gridColorsAndRandomness.py

@@ -0,0 +1,64 @@
+# import our special functions from the random library
+from random import randrange, random
+
+# define the width and height of the new page
+#       w     h
+newPage(1000, 1000)
+
+# define x and y as where we start? (0, 0) is in the bottom left
+x = 0
+y = 0
+
+# define how many rows and columns
+rows = 10
+cols = 10
+
+# define the width and height of each unit of the grid
+gridWidth = 100
+gridHeight = 100
+
+# define the width and height of the shape we will draw in that grid
+shapeWidth = 100
+shapeHeight = 100
+
+# ok it’s time to loop
+# first we will loop through each row
+# and then WITHIN that loop we will loop through each column
+# for theThing in theRangeOfThings
+
+for row in range(rows):
+    # everything indented this much runs once for each row
+    for col in range(cols):
+        # everything indented this much runs once for each grid unit
+        
+        # before we draw our shape, let’s pick a color for it
+        # we can create 3 variables
+        r = random() # red
+        g = random() # green
+        b = random() # blue
+        a = 1 # alpha (0 = transparent, 1 = opaque)
+        fill(r, g, b, a)
+    
+        # okay, now we finally draw our shape
+        # we can make a conditional
+        # if this condition is true:
+        #    then run this code
+        # if not:
+        #     then run this code
+        
+        if random() > .5:
+            rect(x, y, shapeWidth, shapeHeight+randrange(-10, 10))
+        else:
+            oval(x, y, shapeWidth, shapeHeight+randrange(-10, 10))
+            
+        # at the end of the column, advance X to the next column
+        x += gridWidth
+    # we are OUTDENTED, which means we are back 
+    # to code that only runs once per row
+    # now that we’ve reached the end of the row
+    # we want to advance y to move us up to the next row
+    y += gridHeight
+    # and we want to return x to its original position
+    # (a carriage return, essentially)
+    #  
+    x -= cols*gridWidth

session-1/6-spoilerAlert!.py

@@ -0,0 +1,103 @@
+# THIS SCRIPT GOES BEYOND WHAT WE COVERED IN CLASS
+# we will cover this next time, but I wanted to give you more to play with
+# it’s a multipage document that we will save
+
+# import our special functions from the random library
+from random import randrange, random
+
+# page dimensions
+pageWidth = 1000
+pageHeight = 1000
+
+# define how many pages
+numPages = 10
+
+# define how many rows and columns
+rows = 50
+cols = 50
+
+# define the width and height of each unit of the grid
+gridWidth = pageWidth/rows
+gridHeight = pageHeight/cols
+
+# define the width and height of the shape we will draw in that grid
+shapeWidth = pageWidth/rows
+shapeHeight = pageHeight/cols
+
+# ok it’s time to loop
+# first we will loop through each row
+# and then WITHIN that loop we will loop through each column
+# for theThing in theRangeOfThings
+
+# a loop for each page
+for page in range(numPages):
+    newPage(pageWidth, pageHeight)
+    fill(0)
+    rect(0, 0, width(), height())
+        
+    # define the width and height of the shape we will draw in that grid
+    # make it a little smaller than the grid this time
+    shapeWidth = pageWidth/rows - 10
+    shapeHeight = pageHeight/cols - 10
+
+    # define x and y as where we start? (0, 0) is in the bottom left
+    # for each page we want to reset these
+    
+    # we are going to draw the shapes from the center this time, 
+    # so we want our X and Y coordinates to be at the center of each grid
+    x = gridWidth / 2
+    y = gridHeight / 2
+    
+    for row in range(rows):
+        # everything indented this much runs once for each row
+        for col in range(cols):
+            # everything indented this much runs once for each grid unit
+        
+            # before we draw our shape, let’s pick a color for it
+            # we can create 3 variables
+            r = random() # red
+            g = random() # green
+            b = random() # blue
+            a = .8 # alpha (0 = transparent, 1 = opaque)
+            fill(r, g, b, a)
+    
+            # okay, now we finally draw our shape
+            
+            # let’s define specific shape dimensions for
+            # JUST THIS ONE shape
+            # by using our basic dimensions and adding some randomness
+            thisShapeWidth = shapeWidth + randrange(-5, 5)
+            thisShapeHeight = shapeHeight + randrange(-5, 5)
+            
+            # we can make a conditional
+            # if this condition is true:
+            #    then run this code
+            # if not:
+            #     then run this code
+            if random() > .5:
+                # to draw from the center, we move the 
+                # x position to the left half of its width
+                # and move it down half its height
+                rect(x-thisShapeWidth/2, y-thisShapeHeight/2, thisShapeWidth, thisShapeHeight)
+            else:
+                oval(x-thisShapeWidth/2, y-thisShapeHeight/2, thisShapeWidth, thisShapeHeight) 
+            # at the end of the column, advance X to the next column
+            x += gridWidth
+            # let’s also make the shape a smidge bigger each time
+            shapeWidth += .01
+            shapeHeight += .01
+        # we are OUTDENTED, which means we are back 
+        # to code that only runs once per row
+        # now that we’ve reached the end of the row
+        # we want to advance y to move us up to the next row
+        y += gridHeight
+        # and we want to return x to its original position
+        # (a carriage return, essentially)
+        #  
+        x -= cols*gridWidth
+        
+# now let’s save this image to the desktop
+# first as a PDF
+saveImage('~/desktop/myFancyGrid.pdf')
+# then as a GIF
+saveImage('~/desktop/myFancyGrid.gif')

session-1/7-randrange.py

@@ -0,0 +1,2 @@
+from random import randrange
+print(randrange(0, 100))