run_html_render.py

#!/usr/bin/env python

"""
B3 copy
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() #b3 - here f is the string going into **memory (object f)
    page.render(f, "    ") # b3 - here is where we take object: "page" and execute func render.  the f attribute is the output file in func render = so f is a memory locatoin (defined by StringIO) and writes to object: f in memory

    f.seek(0) #b3 - go back to start of f

    print("\nthis is f.read from func render_page:\n ",f.read()) #b3 - here it dumps to **console by reading f (from memory)

    f.seek(0)
    open(filename, 'w').write(f.read()) #here is where it writes to a file - object f is read from memory and writen to the output file name.html given above


# Step 1
#########
'''
page = hr.Element() #B3 - this starts an object using the Element class in file: html_render = page becomes a member of class 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.  \n")

page.append("\nAnd here is another piece of text -- you should be able to add any number -  like 423\n")

print("b3test page:  ", type(page), "page dot append is:  ", page.append, "\n\n")


render_page(page, "test_html_output1.html") # B3- this is a function in this file: see above.  it says print object: "page" to file: "in the quotes"
'''

## 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_output7a.html")

# # Step 8
# ########
'''
page = hr.Html()

#make and build the head
head = hr.Head()
head.append( hr.Meta(charset="UTF-8") )
head.append(hr.Title("PythonClass = Revision 1087:"))

#tuck head into the page
page.append(head)

#create and build the body
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")