def parse(element_html, data):
element = lxml.html.fragment_fromstring(element_html)
name = pl.get_string_attrib(element, 'answers-name')
allow_fractions = pl.get_boolean_attrib(element, 'allow-fractions',
ALLOW_FRACTIONS_DEFAULT)
# Get true answer
a_tru = pl.from_json(data['correct_answers'].get(name, None))
if a_tru is None:
return
a_tru = np.array(a_tru)
if a_tru.ndim != 2:
raise ValueError('true answer must be a 2D array')
else:
m, n = np.shape(a_tru)
A = np.empty([m, n])
# Create an array for the submitted answer to be stored in data['submitted_answer'][name]
# used for display in the answer and submission panels
# Also creates invalid error messages
invalid_format = False
for i in range(m):
for j in range(n):
each_entry_name = name + str(n * i + j + 1)
a_sub = data['submitted_answers'].get(each_entry_name, None)
value, newdata = pl.string_fraction_to_number(a_sub,
allow_fractions,
allow_complex=False)
if value is not None:
A[i, j] = value
data['submitted_answers'][each_entry_name] = newdata[
'submitted_answers']
else:
invalid_format = True
data['format_errors'][each_entry_name] = newdata[
'format_errors']
data['submitted_answers'][each_entry_name] = None
if invalid_format:
with open('pl-matrix-component-input.mustache', 'r',
encoding='utf-8') as f:
data['format_errors'][name] = chevron.render(
f, {
'format_error': True,
'allow_fractions': allow_fractions
}).strip()
data['submitted_answers'][name] = None
else:
data['submitted_answers'][name] = pl.to_json(A)
def parse(element_html, data):
element = lxml.html.fragment_fromstring(element_html)
name = pl.get_string_attrib(element, 'answers-name')
allow_complex = pl.get_boolean_attrib(element, 'allow-complex',
ALLOW_COMPLEX_DEFAULT)
allow_fractions = pl.get_boolean_attrib(element, 'allow-fractions',
ALLOW_FRACTIONS_DEFAULT)
a_sub = data['submitted_answers'].get(name, None)
value, newdata = pl.string_fraction_to_number(a_sub, allow_fractions,
allow_complex)
if value is not None:
data['submitted_answers'][name] = newdata['submitted_answers']
else:
data['format_errors'][name] = get_format_string(
allow_complex, allow_fractions, newdata['format_errors'])
data['submitted_answers'][name] = None
def parse(element_html, data):
element = lxml.html.fragment_fromstring(element_html)
name = pl.get_string_attrib(element, 'answers-name')
allow_complex = pl.get_boolean_attrib(element, 'allow-complex', ALLOW_COMPLEX_DEFAULT)
allow_fractions = pl.get_boolean_attrib(element, 'allow-fractions', ALLOW_FRACTIONS_DEFAULT)
allow_blank = pl.get_boolean_attrib(element, 'allow-blank', ALLOW_BLANK_DEFAULT)
blank_value = pl.get_string_attrib(element, 'blank-value', str(BLANK_VALUE_DEFAULT))
a_sub = data['submitted_answers'].get(name, None)
if allow_blank and a_sub is not None and a_sub.strip() == '':
a_sub = blank_value
value, newdata = pl.string_fraction_to_number(a_sub, allow_fractions, allow_complex)
if value is not None:
data['submitted_answers'][name] = newdata['submitted_answers']
else:
data['format_errors'][name] = get_format_string(allow_complex, allow_fractions, newdata['format_errors'])
data['submitted_answers'][name] = None