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‎code/__pycache__/data_structures.cpython-34.pyc‎

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‎code/__pycache__/grade_calc.cpython-35.pyc‎

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‎code/__pycache__/stickfig.cpython-34.pyc‎

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‎code/arguments.py‎

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#!/usr/bin/env python3
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import sys
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print(sys.argv)
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if len(sys.argv) < 2:
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print("You've given me nothing to work with.")
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else:
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print(sys.argv[1] +"? Well I disagree!")

‎code/boo.txt‎

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ya!
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Boo

‎code/classes/.DS_Store‎

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‎code/classes/__pycache__/student.cpython-34.pyc‎

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‎code/classes/__pycache__/student.cpython-35.pyc‎

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‎code/classes/student.py‎

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class Student:
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# Note that each method must have a first parameter named 'self'.
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# self is used to refer to an instance of the class from within
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# the class definition.
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# This is the class's constructor. It is called whenever
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# you create a new object of this class.
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def __init__(self, id, name, exams):
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# If we leave off the self. on the left side, we're not
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# creating attributes, a.k.a. instance variables
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self.id = id
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self.name = name
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self.exams = exams
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# This method 'overrides' the defulat string representation
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# provided by Python.
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def __str__(self):
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# Notice that we must use self. when referring to attributes
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return 'new' + self.name + ', ' + str(self.id) + ', ' + 'Exams: ' + \
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','.join([str(i+1) + ': ' + str(score)
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for i, score in enumerate(self.exams)])
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def exam(self, number):
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if (number < 1) or (number > len(self.exams)):
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msg = 'Exam number must be in range [1, '+str(len(self.exams))+']'
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raise ValueError(msg)
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return self.exams[number - 1]
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def average(self):
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return sum(self.exams) / len(self.exams)
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def add_exam(self, score):
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self.exams.append(score)
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def change_score(self, exam_number, new_score):
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self.exams[exam_number] = new_score
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def adjust_score(self, exam_number, adjustment):
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exams[exam_number - 1] += adjustment
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print("I'm at the top level of the student module");
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if __name__=="__main__":
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print("Also top level of student,but in a __name__=='__main__' block.");

‎code/data_structures.py‎

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# '#' is the comment character in Python.
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# Everything from # to end of line is ignored by Python interpreter
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# Create a list by enclosing elements in []
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boys = ['Stan', 'Kyle', 'Cartman', 'Kenny']
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print("After boys = ['Stan', 'Kyle', 'Cartman', 'Kenny']")
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# Notice we have to convert the list to a string before concatenating
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# with a string, otherwise we'd get a type error
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print('boys == ' + str(boys))
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# Can also create a list with list() constructor function
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girls = list('Bebe', 'Wendy')
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print("After girls = list('Bebe', 'Wendy')")
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print("girls == " + str(girls))
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# Access list elements by list position
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print('boys[0] == ' + boys[0]) # prints Stan
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# Notice that we have to put butters in a list.
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# If we tried boys + 'Butters' we'd get a type error for trying to
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# add a list to a string
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boys + ['Butters']
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print() # Blank like to make output more readable
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print("After boys + ['Butters']")
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print('boys == ' + str(boys))
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# 'Butters' isn't in boys. What happened?
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# The + operator creates a new list, which we have to assign to a variable
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more_boys = boys + ['Butters']
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print()
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print("After more_boys = boys + ['Butters']")
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print('more_boys == ' + str(more_boys))
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# If we want to add to the original list, we can assign to interpreter
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boys = boys + ['Butters']
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print()
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print("After boys = boys + ['Butters']")
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print('boys == ' + str(boys))
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# Note that we can combine + and = with a shortcut assignment:
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boys += ['Tweak']
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print()
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print("After boys += ['Tweak']")
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print('boys == ' + str(boys))

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