Sparse and circle have been my favorite exercises so far. Learned a TON

students/MichaelGregor/Session 7/html_render.py

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+#!/usr/bin/env python
+
+"""
+Python class example.
+"""
+
+
+# The start of it all:
+# Fill it all in here.
+class Element(object):
+
+    tag = 'html'  # shouldn't really be usable without properly subclassing
+    indent = '    '
+
+    def __init__(self, content=None, **attributes):
+
+        self.content = []
+        # adding attributes dictionary
+        self.attributes = attributes
+
+        if content is not None:
+            self.content.append(content)
+
+    def append(self, content):
+        self.content.append(content)
+
+    # added render tag method to deal with any type of tag at indentation level
+    def render_tag(self, current_ind):
+        # tag and then content for each class
+        attrs = "".join([' {}="{}"'.format(key, val) for key, val in self.attributes.items()])
+        # indentation + tag + content
+        tag_str = "{}<{}{}>".format(current_ind, self.tag, attrs)
+        return tag_str
+
+    def render(self, file_out, current_ind=""):
+        # render method now calls the render tag method instead of just a string
+        file_out.write(self.render_tag(current_ind))
+        file_out.write('\n')
+        for con in self.content:
+            try:
+                file_out.write(current_ind + self.indent + con+"\n")
+            except TypeError:
+                con.render(file_out, current_ind+self.indent)
+        # write out closing tag
+        file_out.write("{}</{}>\n".format(current_ind, self.tag))
+
+
+class Body(Element):
+    tag = 'body'
+
+
+class P(Element):
+    tag = 'p'
+
+
+class Html(Element):
+    tag = 'html'
+
+
+class Head(Element):
+    tag = 'head'
+
+
+class Title(Element):
+    tag = 'title'

students/MichaelGregor/Session 7/run_html_render.py

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+#!/usr/bin/env python
+
+"""
+a simple script can run and test your html rendering classes.
+
+Uncomment the steps as you add to your rendering.
+
+"""
+
+from io import StringIO
+
+# importing the html_rendering code with a short name for easy typing.
+import html_render as hr
+# reloading in case you are running this in iPython
+#  -- we want to make sure the latest version is used
+import importlib
+importlib.reload(hr)
+
+
+# writing the file out:
+def render_page(page, filename):
+    """
+    render the tree of elements
+
+    This uses StringIO to render to memory, then dump to console and
+    write to file -- very handy!
+    """
+
+    f = StringIO()
+    page.render(f, "    ")
+
+    f.seek(0)
+
+    print(f.read())
+
+    f.seek(0)
+    open(filename, 'w').write(f.read())
+
+
+# Step 1
+#########
+
+#page = hr.Element()
+
+#page.append("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text")
+
+#page.append("And here is another piece of text -- you should be able to add any number")
+
+#render_page(page, "test_html_output1.html")
+
+# ## Step 2
+# ##########
+
+# page = hr.Html()
+
+# body = hr.Body()
+
+# body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text"))
+
+# body.append(hr.P("And here is another piece of text -- you should be able to add any number"))
+
+# page.append(body)
+
+# render_page(page, "test_html_output2.html")
+
+# # Step 3
+# ##########
+
+# page = hr.Html()
+
+# head = hr.Head()
+# head.append(hr.Title("PythonClass = Revision 1087:"))
+
+# page.append(head)
+
+# body = hr.Body()
+
+# body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text"))
+# body.append(hr.P("And here is another piece of text -- you should be able to add any number"))
+
+# page.append(body)
+
+# render_page(page, "test_html_output3.html")
+
+# # Step 4
+# ##########
+
+# page = hr.Html()
+
+# head = hr.Head()
+# head.append(hr.Title("PythonClass = Revision 1087:"))
+
+# page.append(head)
+
+# body = hr.Body()
+
+# body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text",
+#               style="text-align: center; font-style: oblique;"))
+
+# page.append(body)
+
+# render_page(page, "test_html_output4.html")
+
+# # Step 5
+# #########
+
+page = hr.Html()
+
+head = hr.Head()
+head.append(hr.Title("PythonClass = Revision 1087:"))
+
+page.append(head)
+
+body = hr.Body()
+
+body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text",
+               style="text-align: center; font-style: oblique;"))
+
+body.append(hr.Hr())
+
+page.append(body)
+
+render_page(page, "test_html_output5.html")
+
+# # Step 6
+# #########
+
+page = hr.Html()
+
+head = hr.Head()
+head.append(hr.Title("PythonClass = Revision 1087:"))
+
+page.append(head)
+
+body = hr.Body()
+
+body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text",
+              style="text-align: center; font-style: oblique;"))
+
+body.append(hr.Hr())
+
+body.append("And this is a ")
+body.append( hr.A("http://google.com", "link") )
+body.append("to google")
+
+page.append(body)
+
+render_page(page, "test_html_output6.html")
+
+# # Step 7
+# #########
+
+# page = hr.Html()
+
+# head = hr.Head()
+# head.append(hr.Title("PythonClass = Revision 1087:"))
+
+# page.append(head)
+
+# body = hr.Body()
+
+# body.append( hr.H(2, "PythonClass - Class 6 example") )
+
+# body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text",
+#               style="text-align: center; font-style: oblique;"))
+
+# body.append(hr.Hr())
+
+# list = hr.Ul(id="TheList", style="line-height:200%")
+
+# list.append( hr.Li("The first item in a list") )
+# list.append( hr.Li("This is the second item", style="color: red") )
+
+# item = hr.Li()
+# item.append("And this is a ")
+# item.append( hr.A("http://google.com", "link") )
+# item.append("to google")
+
+# list.append(item)
+
+# body.append(list)
+
+# page.append(body)
+
+# render_page(page, "test_html_output7.html")
+
+# # Step 8
+# ########
+
+# page = hr.Html()
+
+
+# head = hr.Head()
+# head.append( hr.Meta(charset="UTF-8") )
+# head.append(hr.Title("PythonClass = Revision 1087:"))
+
+# page.append(head)
+
+# body = hr.Body()
+
+# body.append( hr.H(2, "PythonClass - Class 6 example") )
+
+# body.append(hr.P("Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text",
+#                  style="text-align: center; font-style: oblique;"))
+
+# body.append(hr.Hr())
+
+# list = hr.Ul(id="TheList", style="line-height:200%")
+
+# list.append( hr.Li("The first item in a list") )
+# list.append( hr.Li("This is the second item", style="color: red") )
+
+# item = hr.Li()
+# item.append("And this is a ")
+# item.append( hr.A("http://google.com", "link") )
+# item.append("to google")
+
+# list.append(item)
+
+# body.append(list)
+
+# page.append(body)
+
+# render_page(page, "test_html_output8.html")

students/MichaelGregor/Session 7/sample_html.html

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+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8" />
+        <title>PythonClass = Revision 1087:</title>
+    </head>
+    <body>
+        <h2>PythonClass - Class 6 example</h2>
+        <p style="text-align: center; font-style: oblique;">
+            Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text
+        </p>
+        <hr />
+        <ul style="line-height:200%" id="TheList">
+            <li>
+                The first item in a list
+            </li>
+            <li style="color: red">
+                This is the second item
+            </li>
+            <li>
+                And this is a 
+                <a href="http://google.com">link</a>
+                to google
+            </li>
+        </ul>
+    </body>
+</html>

students/MichaelGregor/Session 7/test_html_output1.html

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+    <html>
+        Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text
+        And here is another piece of text -- you should be able to add any number
+    </html>

students/MichaelGregor/Session 7/test_html_output2.html

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+    <html>
+        <body>
+            <p>
+                Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text
+            </p>
+            <p>
+                And here is another piece of text -- you should be able to add any number
+            </p>
+        </body>
+    </html>

students/MichaelGregor/Session 7/test_html_output3.html

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+    <html>
+        <head>
+            <title>
+                PythonClass = Revision 1087:
+            </title>
+        </head>
+        <body>
+            <p>
+                Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text
+            </p>
+            <p>
+                And here is another piece of text -- you should be able to add any number
+            </p>
+        </body>
+    </html>

students/MichaelGregor/Session 7/test_html_output4.html

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+    <html>
+        <head>
+            <title>
+                PythonClass = Revision 1087:
+            </title>
+        </head>
+        <body>
+            <p style="text-align: center; font-style: oblique;">
+                Here is a paragraph of text -- there could be more of them, but this is enough  to show that we can do some text
+            </p>
+        </body>
+    </html>