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PythonCHBPythonCHB
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finished most of session 7
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‎.gitignore‎

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slides_sources/build
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#ignore python compile files
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#ignore compile files, sublime workspace and project files
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#ignore compiled files, sublime workspace and project files
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*.pyc
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*.sublime*
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#ignore changes in Examples directory
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/Examples/

‎Examples/Session07/class_method.py‎

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#!/usr/bin/env python
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"""
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example of a class method
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"""
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class C(object):
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def __init__(self, x, y):
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self.x = x
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self.y = y
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@classmethod
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def a_class_method(cls, y):
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print "in a_class_method", cls
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return cls(y, y**2)
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class C2(C):
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pass
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if __name__ == "__main__":
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c = C(3, 4)
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print type(c), c.x, c.y
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c2 = C.a_class_method(3)
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print type(c2), c2.x, c2.y
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c3 = c2.a_class_method(2)
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print type(c3), c3.x, c3.y

‎Examples/Session07/properties_example.py‎

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#!/usr/bin/env python
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"""
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Example code for properties
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NOTE: if your getters and setters are this simple: don't do this!
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"""
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class C(object):
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_x = None
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@property
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def x(self):
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return self._x
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@x.setter
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def x(self, value):
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self._x = value
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@x.deleter
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def x(self):
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del self._x
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if __name__ == "__main__":
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c = C()
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c.x = 5
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print c.x
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‎Examples/Session07/static_method.py‎

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#!/usr/bin/env python
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"""
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examples of a static methods
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"""
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class C(object):
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@staticmethod
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def a_static_method(a, b):
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print "in a_static_method"
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return a+b
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def test(self):
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return self.a_static_method(2,3)
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if __name__ == "__main__":
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print C.a_static_method(3,4)
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c = C()
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print c.a_static_method(4,5)
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print c.test()
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‎slides_sources/source/homework/circle_class.rst‎

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Step 5:
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-------
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more to come...
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Add an "alternate constructor" that lets the user create a Circle directly
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with the diameter:
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.. code-block:: python
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>> c = Circle.from_diameter(8)
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>> print c.diameter
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8
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>> print c.radius
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4
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Step 6:
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-------
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Add __str__ and __repr__ methods to your Circle class.
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Now you cant print it:
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.. code-block:: ipython
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In [2]: c = Circle(4)
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In [3]: print c
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Circle with radius: 4.000000
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In [4]: repr(c)
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Out[4]: 'Circle(4)'
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In [5]: d = eval(repr(c))
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In [6]: d
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Out[6]: Circle(4)
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Step 7:
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--------
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Add some of the numeric protocol to your Circle:
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you should be able to add two circles:
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.. code-block:: ipython
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In [7]: c1 = Circle(2)
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In [8]: c2 = Circle(4)
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In [9]: c1 + c2
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Out[9]: Circle(6)
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and multiply one times a number:
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.. code-block:: ipython
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In [16]: c2 * 3
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Out[16]: Circle(12)
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and compare them:
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.. code-block:: ipython
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In [10]: c1 > c2
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Out[10]: False
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In [11]: c1 < c2
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Out[11]: True
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In [12]: c1 == c2
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Out[12]: False
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In [13]: c3 = Circle(4)
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In [14]: c2 == c3
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Out[14]: True
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‎slides_sources/source/homework/html_builder.rst‎

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============
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.. rst-class:: medium
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The very least you need to know about html to do this assigment.
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The very least you need to know about html to do this assigment.
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If you are familar with html, then this will all make sense to you. If you have
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never seen html before, this might be a bit intimidating, but you really don't

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