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"""
A basic example of using the DOM to create an HTML document from scratch.
Also demonstrates creation of HTML forms
"""
from xml.dom import ext
from xml.dom import implementation
if __name__ == '__main__':
#create a concrete HTMLDocument instance.
doc = implementation.createHTMLDocument('A Basic HTML Document')
#add in body
doc.body = doc.createElement('Body')
#Create a form
form = doc.createElement('Form')
#Create some text. Note: every character is represented in some
#DOM object. All text (even between tags) is in a text node
t = doc.createTextNode('Employee Name:')
#Create an input tag
i = doc.createElement('Input')
#All elements can have attributes directly set
i.setAttribute('TYPE','TEXT')
#Some have helper functions defined.
#This one sets the SIZE attribute to 20
#Note that the argument must be a string. 4DOM closely
#follows the DOM spec for the type of the arguments, even
#when the spec is inconsistent or counter-intuitive
i.size = '20'
#This sets the NAME attribute
i.name = 'EmployeeName'
#Set the form's ACTION attribute
form.action = '/cgi-local/test.py'
#this inserts i as the last child in the form
form.appendChild(i)
#Insert t before i in form's child list
form.insertBefore(t,i)
#add the form to the document's body. Note that you can't
#add child elements directly to the document.
doc.body.appendChild(form)
#This prints out the text representation of the HTML document
ext.PrettyPrint(doc)
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