Circle Class and other updates

students/ericstreit/session07/html_render.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+####stopped at step 4
+"""
+A class-based system for rendering html.
+"""
+
+
+# This is the framework for the base class
+class Element(object):
+
+    tag = "html"
+
+    def __init__(self, content=None, **kwargs):
+        self.contents = [content]
+        # print("contents is:", self.contents)
+
+    def append(self, new_content):
+        self.contents.append(new_content)
+
+    def render(self, out_file):
+        # Loop through the list of contents:
+        out_file.write("<{}>\n".format(self.tag))
+        for content in self.contents:
+            if content is not None:
+                try:
+                    content.render(out_file)
+                except AttributeError:
+                    out_file.write(content)
+                out_file.write("\n")
+        out_file.write("</{}>\n".format(self.tag))
+
+class Html(Element):
+
+    tag = "html"
+
+class Body(Element):
+
+    tag = "body"
+
+class P(Element):
+
+    tag = "p"
+
+class Head(Element):
+
+    tag = "head"
+
+class OneLineTag(Element):
+
+    def render(self, out_file):
+        # One line render:
+        #removing my way and implementing the tutorial way
+        #out_file.write("<{}> {} </{}>\n".format(self.tag, self.contents, self.tag))
+        out_file.write("<{}>".format(self.tag))
+        out_file.write(self.contents[0])
+        out_file.write("</{}>\n".format(self.tag))
+
+    def append(self, content):
+        raise NotImplementedError
+
+class Title(OneLineTag):
+
+    tag = "title"

students/ericstreit/session07/run_html_render.py

@@ -0,0 +1,231 @@
+#!/usr/bin/env python3
+
+"""
+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
+
+
+# writing the file out:
+def render_page(page, filename, indent=None):
+    """
+    render the tree of elements
+
+    This uses StringIO to render to memory, then dump to console and
+    write to file -- very handy!
+    """
+
+    f = StringIO()
+    if indent is None:
+        page.render(f)
+    else:
+        page.render(f, indent)
+
+    print(f.getvalue())
+    with open(filename, 'w') as outfile:
+        outfile.write(f.getvalue())
+
+
+# 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")
+
+# The rest of the steps have been commented out.
+#  Uncomment them as you move along with the assignment.
+
+# ## 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 and 9
+# ##############
+
+# 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 - 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/ericstreit/session07/sample_html.html

@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Python Class Sample page</title>
+    </head>
+    <body>
+        <h2>Python Class - Html rendering 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 id="TheList" style="line-height:200%">
+            <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>