def test_medium(self):
# medium test case
function, arguments, evaluations, success, message = dexi.parse_function(
self._MEDIUM_TEST)
self.assertEqual(
function,
[[(0, 0), 0], [(0, 1), 1], [(0, 2), 2], [(1, 0), 1], [(1, 1), 2],
[(1, 2), 3], [(2, 0), 2], [(2, 1), 3], [(2, 2), 4]])
self.assertEqual(arguments, ["f", "s"])
self.assertEqual(evaluations, [["1", "1"], ["2", "2"], ["3", "3.5"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(
function, evaluations, arguments, False)
self.assertEqual(derivatives, ["1.00"] * 20)
self.assertEqual(evals, [(["1", "1"], "2.00"), (["2", "2"], "4.00"),
(["3", "3.5"], "6.50")])
self.assertNotEqual(image, "")
self.assertEqual(image[-4:], ".png")
for c in image[:-4]:
self.assertTrue(c in self._POSSIBLE_CHARS)
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_large_newlines(self):
# large test case with newlines
function, arguments, evaluations, success, message = dexi.parse_function(self._LARGE_TEST_NEWLINE)
self.assertEqual(function, [[(0, 0, 0), 4], [(0, 0, 1), 2], [(0, 0, 2), 3], [(0, 1, 0), 1], [(0, 1, 1), 2],
[(0, 1, 2), 0], [(0, 2, 0), 1], [(0, 2, 1), 2], [(0, 2, 2), 4], [(1, 0, 0), 3],
[(1, 0, 1), 2], [(1, 0, 2), 1], [(1, 1, 0), 2], [(1, 1, 1), 0], [(1, 1, 2), 1],
[(1, 2, 0), 2], [(1, 2, 1), 1], [(1, 2, 2), 2], [(2, 0, 0), 0], [(2, 0, 1), 1],
[(2, 0, 2), 3], [(2, 1, 0), 0], [(2, 1, 1), 2], [(2, 1, 2), 4], [(2, 2, 0), 4],
[(2, 2, 1), 2], [(2, 2, 2), 1]])
self.assertEqual(arguments, ["f", "s", "t"])
self.assertEqual(evaluations, [["1", "2", "3"], ["0.1", "0.2", "0.3"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(function, evaluations, arguments)
self.assertEqual(derivatives, ["-1.00", "0.00", "-2.00", "1.00", "-2.00", "1.00", "1.00", "-1.00", "-2.00",
"-2.00", "-0.50", "-0.00", "-0.50", "-0.00", "2.00", "1.50", "-0.00", "-1.50",
"-3.00", "-1.00", "2.00", "-2.00", "2.00", "3.00", "2.00", "1.00", "-1.00",
"-0.11", "-3.00", "0.00", "-3.00", "-1.50", "0.00", "0.50", "0.00", "0.00",
"4.00", "-1.00", "-2.00", "0.00", "-0.50", "-0.50", "0.50", "0.00", "1.00",
"1.00", "0.00", "1.00", "1.00", "2.00", "0.50", "-1.00", "4.00", "0.00",
"-3.00", "0.00", "-2.00", "-0.50", "1.00", "1.00", "-0.50", "-2.00", "1.00",
"1.50", "2.00", "-1.00", "-1.00", "-1.00", "-2.00", "-0.50", "1.00", "-1.00",
"-0.00", "1.00", "1.00", "1.50", "2.00", "2.00", "2.00", "2.00", "-2.00",
"-1.50", "-1.00", "0.11"])
self.assertEqual(evals, [(["1", "2", "3"], "3.00"), (["0.1", "0.2", "0.3"], "2.93")])
self.assertEqual(image, "")
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_multiplicities_type(self):
# test if multiplicities can be cast to integers
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_MULTIPLICITIES_TYPE)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "Multiplicities should be integers! Muliplicity 2 is not!")
def test_eval_arguments_type(self):
# test if types of evaluation arguments can be cast to floats
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_EVAL_ARGS_TYPE)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "All function evaluations should be floats ['a']!")
def test_func_output_type(self):
# test if inputs to function can be cast to ints
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_FUN_OUTPUT)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "All function outputs should be floats!")
def test_empty(self):
# test if empty function produces errors
function, arguments, evaluations, success, message = dexi.parse_function(self._EMPTY_FUNCTION)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "Function should be represented in at least 3 lines!")
def test_input_output_size(self):
# test if function output length is equal to the multiplied multiplicities
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_N_INPUT_OUTPUT)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "The input space size (12) does not match output space size (9)!")
def test_multiplicities(self):
# test if the number of arguments matches the number of supplied multiplicities
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_MULTIPLICITIES)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "Number of function arguments (2) and number of multiplicities (3) should be equal!")
def test_eval_arguments(self):
# test if evaluation arguments have the same length as the inputs
function, arguments, evaluations, success, message = dexi.parse_function(self._INCORRECT_EVAL_ARGS)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "Number of function arguments (1) does not match number of supplied evaluation arguments (2) - ['1', '2'].")
def test_func_output_type(self):
# test if inputs to function can be cast to ints
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_FUN_OUTPUT)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message, "All function outputs should be floats!")
def test_eval_arguments_type(self):
# test if types of evaluation arguments can be cast to floats
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_EVAL_ARGS_TYPE)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(message,
"All function evaluations should be floats ['a']!")
def test_empty(self):
# test if empty function produces errors
function, arguments, evaluations, success, message = dexi.parse_function(
self._EMPTY_FUNCTION)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(
message, "Function should be represented in at least 3 lines!")
def animation():
raw_function = ""
if "names" in request.form:
# if "names" is in the request, it means it was called from the already
# created derivatives - the user changed the inputs and retried the
# derivative creation
values = {}
# we read the fields in the request and parse out those that start with a v
for field in request.form:
if field[0] == "v":
# the values and the entries are put into a dictionary
# before that the keys have "v"s removed and cast to int
tmp_f = int(field.replace("v", ""))
values[tmp_f] = request.form[field]
value_list = []
# we sort the keys of the dictionary, to get the initial order
# and put the values into a value list
for field in sorted(values):
value_list.append(values[field])
# function is described in three lines
function_description = []
# output values joined, delimited with a comma
function_description.append(",".join(value_list))
# names are delimited by a comma (already in the request)
function_description.append(request.form["names"])
# multiplicities are delimited by a comma (already in the request)
function_description.append(request.form["multiplicity"])
# the raw function is represented as a new-line delimitied string
raw_function = str("\n".join(function_description))
else:
return _MISSING_ARGUMENTS
# we are interested in the time that took for generating the animation
t = time()
# we parse the function, getting the actual function, arguments, needed evaluations
# success status and possible message
function, arguments, evaluations, success, message = parse_function(
raw_function)
if success:
# if the previous step succeeded we can construct the function, get derivatives,
# evaluations and the possible image
anim_file_name = _create_animation(function, arguments)
print "Function animation needed {0}s to execute!".format(
_format_number(time() - t))
else:
return _COULD_NOT_PARSE_FUNCTION.format(message)
# the derivatives page is rendered
return anim_file_name
def test_multiplicities_type(self):
# test if multiplicities can be cast to integers
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_MULTIPLICITIES_TYPE)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(
message,
"Multiplicities should be integers! Muliplicity 2 is not!")
def test_input_output_size(self):
# test if function output length is equal to the multiplied multiplicities
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_N_INPUT_OUTPUT)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(
message,
"The input space size (12) does not match output space size (9)!")
def test_eval_arguments(self):
# test if evaluation arguments have the same length as the inputs
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_EVAL_ARGS)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(
message,
"Number of function arguments (1) does not match number of supplied evaluation arguments (2) - ['1', '2']."
)
def test_content_examples(self):
for description, example in content._EXAMPLES:
inp_line = example.replace(" ", "\n")
self.assertNotEqual(description, "")
function, arguments, evaluations, success, message = dexi.parse_function(
inp_line)
self.assertNotEqual(function, [])
for point, output in function:
for arg in point:
self.assertTrue(type(arg) is int)
self.assertTrue(type(output) is float)
self.assertNotEqual(arguments, [])
for arg in arguments:
self.assertNotEqual(arg, "")
if evaluations:
for evaluation in evaluations:
for point in evaluation:
self.assertTrue(type(point) is str)
self.assertTrue(type(float(point)) is float)
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(
function, evaluations, arguments, False)
self.assertEqual(len(derivatives),
(len(function) + 1) * len(arguments))
for derivative in derivatives:
self.assertTrue(type(derivative) is str)
self.assertTrue(type(float(derivative)) is float)
if evaluations:
self.assertNotEqual(evals, [])
for point, evaluation in evals:
self.assertEqual(len(point), len(arguments))
for p in point:
self.assertTrue(type(p) is str)
self.assertTrue(type(float(p)) is float)
self.assertTrue(type(evaluation) is str)
self.assertTrue(type(float(evaluation)) is float)
if len(arguments) < 3:
self.assertRegexpMatches(image, "[a-zA-Z0-9]{10}\.png")
else:
self.assertEqual(image, "")
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_multiplicities(self):
# test if the number of arguments matches the number of supplied multiplicities
function, arguments, evaluations, success, message = dexi.parse_function(
self._INCORRECT_MULTIPLICITIES)
self.assertEqual(function, None)
self.assertEqual(arguments, None)
self.assertEqual(evaluations, None)
self.assertEqual(success, False)
self.assertEqual(
message,
"Number of function arguments (2) and number of multiplicities (3) should be equal!"
)
def animation():
raw_function = ""
if "names" in request.form:
# if "names" is in the request, it means it was called from the already
# created derivatives - the user changed the inputs and retried the
# derivative creation
values = {}
# we read the fields in the request and parse out those that start with a v
for field in request.form:
if field[0] == "v":
# the values and the entries are put into a dictionary
# before that the keys have "v"s removed and cast to int
tmp_f = int(field.replace("v",""))
values[tmp_f] = request.form[field]
value_list = []
# we sort the keys of the dictionary, to get the initial order
# and put the values into a value list
for field in sorted(values):
value_list.append(values[field])
# function is described in three lines
function_description = []
# output values joined, delimited with a comma
function_description.append(",".join(value_list))
# names are delimited by a comma (already in the request)
function_description.append(request.form["names"])
# multiplicities are delimited by a comma (already in the request)
function_description.append(request.form["multiplicity"])
# the raw function is represented as a new-line delimitied string
raw_function = str("\n".join(function_description))
else:
return _MISSING_ARGUMENTS
# we are interested in the time that took for generating the animation
t = time()
# we parse the function, getting the actual function, arguments, needed evaluations
# success status and possible message
function, arguments, evaluations, success, message = parse_function(raw_function)
if success:
# if the previous step succeeded we can construct the function, get derivatives,
# evaluations and the possible image
anim_file_name = _create_animation(function, arguments)
print "Function animation needed {0}s to execute!".format(_format_number(time() - t))
else:
return _COULD_NOT_PARSE_FUNCTION.format(message)
# the derivatives page is rendered
return anim_file_name
def test_content_examples(self):
for description, example in content._EXAMPLES:
inp_line = example.replace(" ", "\n")
self.assertNotEqual(description, "")
function, arguments, evaluations, success, message = dexi.parse_function(inp_line)
self.assertNotEqual(function, [])
for point, output in function:
for arg in point:
self.assertTrue(type(arg) is int)
self.assertTrue(type(output) is float)
self.assertNotEqual(arguments, [])
for arg in arguments:
self.assertNotEqual(arg, "")
if evaluations:
for evaluation in evaluations:
for point in evaluation:
self.assertTrue(type(point) is str)
self.assertTrue(type(float(point)) is float)
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(function, evaluations, arguments, False)
self.assertEqual(len(derivatives), (len(function) + 1)*len(arguments))
for derivative in derivatives:
self.assertTrue(type(derivative) is str)
self.assertTrue(type(float(derivative)) is float)
if evaluations:
self.assertNotEqual(evals, [])
for point, evaluation in evals:
self.assertEqual(len(point), len(arguments))
for p in point:
self.assertTrue(type(p) is str)
self.assertTrue(type(float(p)) is float)
self.assertTrue(type(evaluation) is str)
self.assertTrue(type(float(evaluation)) is float)
if len(arguments) < 3:
self.assertRegexpMatches(image, "[a-zA-Z0-9]{10}\.png")
else:
self.assertEqual(image, "")
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_small(self):
# a small test case
function, arguments, evaluations, success, message = dexi.parse_function(self._SMALL_TEST)
self.assertEqual(function, [[(0,), 0], [(1,), 1], [(2,), 2]])
self.assertEqual(arguments, ["f"])
self.assertEqual(evaluations, [["1"], ["2"], ["3"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(function, evaluations, arguments, False)
self.assertEqual(derivatives, ["1.00"] * 4);
self.assertEqual(evals, [(["1"], "1.00"), (["2"], "2.00"), (["3"], "3.00")])
self.assertNotEqual(image, "")
self.assertEqual(image[-4:], ".png")
for c in image[:-4]:
self.assertTrue(c in self._POSSIBLE_CHARS)
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_medium(self):
# medium test case
function, arguments, evaluations, success, message = dexi.parse_function(self._MEDIUM_TEST)
self.assertEqual(function, [[(0, 0), 0], [(0, 1), 1], [(0, 2), 2], [(1, 0), 1], [(1, 1), 2],
[(1, 2), 3], [(2, 0), 2], [(2, 1), 3], [(2, 2), 4]])
self.assertEqual(arguments, ["f", "s"])
self.assertEqual(evaluations, [["1", "1"], ["2", "2"], ["3", "3.5"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(function, evaluations, arguments, False)
self.assertEqual(derivatives, ["1.00"] * 20);
self.assertEqual(evals, [(["1", "1"], "2.00"), (["2", "2"], "4.00"), (["3", "3.5"], "6.50")])
self.assertNotEqual(image, "")
self.assertEqual(image[-4:], ".png")
for c in image[:-4]:
self.assertTrue(c in self._POSSIBLE_CHARS)
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_large_newlines(self):
# large test case with newlines
function, arguments, evaluations, success, message = dexi.parse_function(
self._LARGE_TEST_NEWLINE)
self.assertEqual(
function,
[[(0, 0, 0), 4], [(0, 0, 1), 2], [(0, 0, 2), 3], [(0, 1, 0), 1],
[(0, 1, 1), 2], [(0, 1, 2), 0], [(0, 2, 0), 1], [(0, 2, 1), 2],
[(0, 2, 2), 4], [(1, 0, 0), 3], [(1, 0, 1), 2], [(1, 0, 2), 1],
[(1, 1, 0), 2], [(1, 1, 1), 0], [(1, 1, 2), 1], [(1, 2, 0), 2],
[(1, 2, 1), 1], [(1, 2, 2), 2], [(2, 0, 0), 0], [(2, 0, 1), 1],
[(2, 0, 2), 3], [(2, 1, 0), 0], [(2, 1, 1), 2], [(2, 1, 2), 4],
[(2, 2, 0), 4], [(2, 2, 1), 2], [(2, 2, 2), 1]])
self.assertEqual(arguments, ["f", "s", "t"])
self.assertEqual(evaluations, [["1", "2", "3"], ["0.1", "0.2", "0.3"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(
function, evaluations, arguments)
self.assertEqual(derivatives, [
"-1.00", "0.00", "-2.00", "1.00", "-2.00", "1.00", "1.00", "-1.00",
"-2.00", "-2.00", "-0.50", "-0.00", "-0.50", "-0.00", "2.00",
"1.50", "-0.00", "-1.50", "-3.00", "-1.00", "2.00", "-2.00",
"2.00", "3.00", "2.00", "1.00", "-1.00", "-0.11", "-3.00", "0.00",
"-3.00", "-1.50", "0.00", "0.50", "0.00", "0.00", "4.00", "-1.00",
"-2.00", "0.00", "-0.50", "-0.50", "0.50", "0.00", "1.00", "1.00",
"0.00", "1.00", "1.00", "2.00", "0.50", "-1.00", "4.00", "0.00",
"-3.00", "0.00", "-2.00", "-0.50", "1.00", "1.00", "-0.50",
"-2.00", "1.00", "1.50", "2.00", "-1.00", "-1.00", "-1.00",
"-2.00", "-0.50", "1.00", "-1.00", "-0.00", "1.00", "1.00", "1.50",
"2.00", "2.00", "2.00", "2.00", "-2.00", "-1.50", "-1.00", "0.11"
])
self.assertEqual(evals, [(["1", "2", "3"], "3.00"),
(["0.1", "0.2", "0.3"], "2.93")])
self.assertEqual(image, "")
self.assertEqual(success, True)
self.assertEqual(message, "")
def test_small(self):
# a small test case
function, arguments, evaluations, success, message = dexi.parse_function(
self._SMALL_TEST)
self.assertEqual(function, [[(0, ), 0], [(1, ), 1], [(2, ), 2]])
self.assertEqual(arguments, ["f"])
self.assertEqual(evaluations, [["1"], ["2"], ["3"]])
self.assertEqual(success, True)
self.assertEqual(message, "")
derivatives, evals, image, success, message = dexi.get_derivatives(
function, evaluations, arguments, False)
self.assertEqual(derivatives, ["1.00"] * 4)
self.assertEqual(evals, [(["1"], "1.00"), (["2"], "2.00"),
(["3"], "3.00")])
self.assertNotEqual(image, "")
self.assertEqual(image[-4:], ".png")
for c in image[:-4]:
self.assertTrue(c in self._POSSIBLE_CHARS)
self.assertEqual(success, True)
self.assertEqual(message, "")
def derivatives():
# the path which serves post requests for creating derivatives
raw_function = ""
if "names" in request.form:
# if "names" is in the request, it means it was called from the already
# created derivatives - the user changed the inputs and retried the
# derivative creation
values = {}
# we read the fields in the request and parse out those that start with a v
for field in request.form:
if field[0] == "v":
# the values and the entries are put into a dictionary
# before that the keys have "v"s removed and cast to int
tmp_f = int(field.replace("v", ""))
values[tmp_f] = request.form[field]
value_list = []
# we sort the keys of the dictionary, to get the initial order
# and put the values into a value list
for field in sorted(values):
value_list.append(values[field])
# function is described in three lines
function_description = []
# output values joined, delimited with a comma
function_description.append(",".join(value_list))
# names are delimited by a comma (already in the request)
function_description.append(request.form["names"])
# multiplicities are delimited by a comma (already in the request)
function_description.append(request.form["multiplicity"])
# the raw function is represented as a new-line delimitied string
raw_function = str("\n".join(function_description))
elif "function" in request.form:
# if function is present in request, we read it directly
# parsing is done afterwards
raw_function = request.form["function"]
else:
# if neither of them are present, we return error status
entries = {
"raw_function": raw_function,
"ok": False,
"message": "Unsupported operation!",
"title": content._TITLE,
"subtitle": content._SUBTITLE,
"about": content._ABOUT,
"license": content._GPL,
}
# render the derivatives page
return render_template("derivatives.html", entries=entries)
# we are interested in the time that took for generating the derivatives,
# evaluations and images
t = time()
# we parse the function, getting the actual function, arguments, needed evaluations
# success status and possible message
function, arguments, evaluations, success, message = parse_function(
raw_function)
# variables are prepared for filling in - these are defaults if anything goes wrong
raw_function = raw_function.replace("\r", "")
raw_function = raw_function.split("\n")
derivatives = None
success1 = False
message1 = ""
multiplicities = ""
names = ""
image = ""
if success:
# if the previous step succeeded we can construct the function, get derivatives,
# evaluations and the possible image
names = ",".join(arguments)
multiplicities = raw_function[2]
derivatives, evaluations, image, success1, message1 = get_derivatives(
function, evaluations, arguments)
print "Query needed {0}s to execute!".format(_format_number(time() -
t))
# form a dictionary to return to the user
entries = {
"raw_function": raw_function,
"ok": success and success1,
"message": " ".join([message, message1]),
"function": function,
"arguments": arguments,
"derivatives": derivatives,
"title": content._TITLE,
"subtitle": content._SUBTITLE,
"about": content._ABOUT,
"license": content._GPL,
"names": names,
"multiplicities": multiplicities,
"evaluations": evaluations,
"image": image
}
# the derivatives page is rendered
return render_template("derivatives.html", entries=entries)
def derivatives():
# the path which serves post requests for creating derivatives
raw_function = ""
if "names" in request.form:
# if "names" is in the request, it means it was called from the already
# created derivatives - the user changed the inputs and retried the
# derivative creation
values = {}
# we read the fields in the request and parse out those that start with a v
for field in request.form:
if field[0] == "v":
# the values and the entries are put into a dictionary
# before that the keys have "v"s removed and cast to int
tmp_f = int(field.replace("v",""))
values[tmp_f] = request.form[field]
value_list = []
# we sort the keys of the dictionary, to get the initial order
# and put the values into a value list
for field in sorted(values):
value_list.append(values[field])
# function is described in three lines
function_description = []
# output values joined, delimited with a comma
function_description.append(",".join(value_list))
# names are delimited by a comma (already in the request)
function_description.append(request.form["names"])
# multiplicities are delimited by a comma (already in the request)
function_description.append(request.form["multiplicity"])
# the raw function is represented as a new-line delimitied string
raw_function = str("\n".join(function_description))
elif "function" in request.form:
# if function is present in request, we read it directly
# parsing is done afterwards
raw_function = request.form["function"]
else:
# if neither of them are present, we return error status
entries = {"raw_function": raw_function,
"ok": False,
"message": "Unsupported operation!",
"title": content._TITLE,
"subtitle": content._SUBTITLE,
"about": content._ABOUT,
"license": content._GPL,
}
# render the derivatives page
return render_template("derivatives.html", entries=entries)
# we are interested in the time that took for generating the derivatives,
# evaluations and images
t = time()
# we parse the function, getting the actual function, arguments, needed evaluations
# success status and possible message
function, arguments, evaluations, success, message = parse_function(raw_function)
# variables are prepared for filling in - these are defaults if anything goes wrong
raw_function = raw_function.replace("\r", "")
raw_function = raw_function.split("\n")
derivatives = None
success1 = False
message1 = ""
multiplicities = ""
names = ""
image = ""
if success:
# if the previous step succeeded we can construct the function, get derivatives,
# evaluations and the possible image
names = ",".join(arguments)
multiplicities = raw_function[2]
derivatives, evaluations, image, success1, message1 = get_derivatives(function, evaluations, arguments)
print "Query needed {0}s to execute!".format(_format_number(time() - t))
# form a dictionary to return to the user
entries = {"raw_function": raw_function,
"ok": success and success1,
"message": " ".join([message, message1]),
"function": function,
"arguments": arguments,
"derivatives": derivatives,
"title": content._TITLE,
"subtitle": content._SUBTITLE,
"about": content._ABOUT,
"license": content._GPL,
"names": names,
"multiplicities": multiplicities,
"evaluations": evaluations,
"image": image
}
# the derivatives page is rendered
return render_template("derivatives.html", entries=entries)