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from Cheetah.Template import Template
from Cheetah import NameMapper
#Error. Cheetah cannot find 'x' because
#it is not dictionary key or instance member:
class X:
pass
x = X()
x.value3 = 3
tmpl = "$x.value3"
NS = [x]
t = Template.compile(source=tmpl)(namespaces=NS)
try:
t.respond() #Here substitution is attempted
except NameMapper.NotFound, e:
print 'NameMapper.NotFound: %s' % e
#NameMapper.NotFound: cannot find 'x'
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