import inspect
test_template = '''Hello, %(first_name)s %(last_name)s'''
def call_template(template,context=None,**kw):
""" Calls a template and returns the generated content.
this is pretty much braindead, it's just meant to give you
the general idea.
"""
# efficiency is not the problem here
if context is not None:
d = dict(context)
d.update(kw)
else:
d = kw
return template%d
def call_contextual_template(template):
# this is the magic line
frame = inspect.currentframe().f_back
# again, we don't care about efficiency, it's not the point here
d = dict(frame.f_globals)
d.update(frame.f_locals)
return call_template(template,d)
def test_1():
first_name = "Foo" # imagine it is fetched from database
last_name = "Bar"
print call_template(test_template,{
"first_name":first_name,
"last_name":last_name,
}) # this is ugly !
def test_2():
first_name = "Foo" # imagine it is fetched from database
last_name = "Bar"
print call_template(test_template,
first_name=first_name,
last_name=last_name,
) # this is ugly !
def test_3():
first_name = "Foo" # imagine it is fetched from database
last_name = "Bar"
print call_contextual_template(test_template) # this is much better
if __name__=='__main__':
test_1()
test_2()
test_3()
