def test_implicit_multiplication(self):
""" The query "(x^k)/k! exp(-x)" fails because the implicit
multplication function in the preparser doesn't handle the "!"
"""
expression = Expression("(x^k)/k! exp(-x)")
expression.taylor_series()
def series():
""" Endpoint to get the taylor series expansion of a function
"""
query = request.args.get('query')
if query:
# TODO later we're going to want to return some JSON to the frontend
# TODO user input might not be something we can actually process, we
# should handle that case (ideally help the user figure out what we
# don't understand)
expression = Expression(query)
return expression.taylor_series()
else:
return ""