from ExamplePage import ExamplePage

class Introspect(ExamplePage):

def writeContent(self):

self.writeln('<h4>Introspection</h4>')

self.writeln("<p>The following table shows the values for various"

" Python expressions, all of which are related to <em>introspection</em>."

" That is to say, all the expressions examine the environment such as"

" the object, the object's class, the module and so on.</p>")

self.writeln('<table align="center" bgcolor="#EEEEFF" border="0"'

' cellpadding="2" cellspacing="2" width="100%">')

self.pair('locals().keys()', locals().keys())

self.list('globals().keys()')

self.list('dir(self)')

self.list('dir(self.__class__)')

self.list('self.__class__.__bases__')

self.list('dir(self.__class__.__bases__[0])')

self.writeln('</table>')

def pair(self, key, value):

if isinstance(value, (list, tuple)):

value = ', '.join(map(str, value))

self.writeln('<tr valign="top"><td>%s</td><td>%s</td></tr>'

% (key, self.htmlEncode(str(value))))

def list(self, codeString):

value = eval(codeString)

assert isinstance(value, (list, tuple))

self.pair(codeString, value)