Added class 2

Class 2 needs some attention. It does not yet have a homework assignment, and I’m not sure that it’s at the appropriate level.

Author: aeallen

Python Syllabus.pdf

@@ -93,9 +93,14 @@ \section{Second Class - Scripting}
 \subsection{Class expectations}
 
 \begin{enumerate}
-\item Fill in expectations
+\item Understand what a script is and what it can do
+\item Run a script from the terminal
+
 \end{enumerate}
 
+Includes a PowerPoint to go through with students and a script to
+run. 
+
  %----------------------------------------------------------------------------------------
 %THIRD CLASS
 %----------------------------------------------------------------------------------------

Python Syllabus.tex

@@ -0,0 +1,60 @@
+#! /usr/bin/env python
+
+# This script will perform all the calculations we have done in class at once
+# It will also highlight some of the things you will learn to do by the end of the class
+
+#this is how you can import packages that hold useful functions -- will be explained further
+import math
+import timeit
+
+#DEFINE USER FUNCTIONS
+
+#this is a function. When called in the script it will be run
+def perform_math(starting_number):
+ num = starting_number*9
+ 
+ #this is a while loop and a control statement
+ while (num >= 10):
+ #creating a string and then splitting it
+ mm = list(str(num))
+ num = 0
+ for num_pos in mm :
+ num = num + int(num_pos)
+ #End of the "nested" loop
+ #end of the first loop
+ 
+ num = num-5
+ 
+ return num
+
+#MAIN SCRIPT
+
+start_time = timeit.default_timer()
+
+#we will first open up a file for reading that is full of numbers
+num_file = open("ingredients_file.txt", "r")
+
+#open up a file to write out the results
+out_file = open("results_file.txt", "w")
+
+#I have put the contents of the file into what is called an array
+numbers = num_file.readlines()
+
+#This is called a loop. This is how we can get every number in the file
+for i in range(len(numbers) ):
+ 
+ single_number = int(numbers[i]) #I am going through each number and making sure it is a number
+ 
+ #I am performing the math on that number and setting the result to a new variable
+ new_output = perform_math(single_number)
+ 
+ #I am writing out the final output plus a new line character
+ out_file.write(str(new_output) + "\n")
+
+#Closing up the files
+out_file.close
+num_file.close
+
+elapsed = timeit.default_timer() - start_time
+
+print 'The time spent running the script is', elapsed, 'seconds'

class 2/Scripting_lesson_basics.docx

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