def eval_card(self, card_name, expression, variable, parameters):
card = get_card(card_name)
if not card:
raise KeyError
_, arguments, evaluator, evaluated = self.eval_input(expression)
variable = sympy.Symbol(variable)
components, cards, evaluated, _ = self.get_cards(arguments, evaluator, evaluated)
components['variable'] = variable
evaluator.set(str(variable), variable)
result = card.eval(evaluator, components, parameters)
return {
'value': repr(result),
'output': card.format_output(result, mathjax_latex)
}
def get_card_info(self, card_name, expression, variable):
card = get_card(card_name)
if not card:
raise KeyError
_, arguments, evaluator, evaluated = self.eval_input(expression)
variable = sympy.Symbol(variable)
components, cards, evaluated, _ = self.get_cards(arguments, evaluator, evaluated)
components['variable'] = variable
return {
'var': repr(variable),
'title': card.format_title(evaluated),
'input': card.format_input(repr(evaluated), components),
'pre_output': latex(card.pre_output_function(evaluated, variable))
}
def eval_card(self, card_name, expression, variable, parameters):
card = get_card(card_name)
if not card:
raise KeyError
_, arguments, evaluator, evaluated = self.eval_input(expression)
variable = sympy.Symbol(variable)
components, cards, evaluated, _ = self.get_cards(
arguments, evaluator, evaluated)
components['variable'] = variable
evaluator.set(str(variable), variable)
result = card.eval(evaluator, components, parameters)
return {
'value': repr(result),
'output': card.format_output(result, mathjax_latex)
}
def get_card_info(self, card_name, expression, variable):
card = get_card(card_name)
if not card:
raise KeyError
_, arguments, evaluator, evaluated = self.eval_input(expression)
variable = sympy.Symbol(variable)
components, cards, evaluated, _ = self.get_cards(
arguments, evaluator, evaluated)
components['variable'] = variable
return {
'var': repr(variable),
'title': card.format_title(evaluated),
'input': card.format_input(repr(evaluated), components),
'pre_output': latex(card.pre_output_function(evaluated, variable))
}
def prepare_cards(self, parsed, arguments, evaluator, evaluated):
components, cards, evaluated, is_function = self.get_cards(arguments, evaluator, evaluated)
if is_function:
latex_input = ''.join(['<script type="math/tex; mode=display">',
latexify(parsed, evaluator),
'</script>'])
else:
latex_input = mathjax_latex(evaluated)
result = []
ambiguity = self.disambiguate(arguments)
if ambiguity:
result.append({
"ambiguity": ambiguity[0],
"description": ambiguity[1]
})
result.append({
"title": "SymPy",
"input": removeSymPy(parsed),
"output": latex_input
})
if cards:
if any(get_card(c).is_multivariate() for c in cards):
result[-1].update({
"num_variables": len(components['variables']),
"variables": map(repr, components['variables']),
"variable": repr(components['variable'])
})
# If no result cards were found, but the top-level call is to a
# function, then add a special result card to show the result
if not cards and not components['variable'] and is_function:
result.append({
'title': 'Result',
'input': removeSymPy(parsed),
'output': format_by_type(evaluated, arguments, mathjax_latex)
})
else:
var = components['variable']
# If the expression is something like 'lcm(2x, 3x)', display the
# result of the function before the rest of the cards
if is_function and not is_function_handled(arguments[0]):
result.append(
{"title": "Result", "input": "",
"output": format_by_type(evaluated, arguments, mathjax_latex)})
line = "simplify(input_evaluated)"
simplified = evaluator.eval(line,
use_none_for_exceptions=True,
repr_expression=False)
if (simplified != None and
simplified != evaluated and
arguments.args and
len(arguments.args) > 0 and
simplified != arguments.args[0]):
result.append(
{"title": "Simplification", "input": repr(simplified),
"output": mathjax_latex(simplified)})
elif arguments.function == 'simplify':
result.append(
{"title": "Simplification", "input": "",
"output": mathjax_latex(evaluated)})
for card_name in cards:
card = get_card(card_name)
if not card:
continue
try:
result.append({
'card': card_name,
'var': repr(var),
'title': card.format_title(evaluated),
'input': card.format_input(repr(evaluated), components),
'pre_output': latex(
card.pre_output_function(evaluated, var)),
'parameters': card.card_info.get('parameters', [])
})
except (SyntaxError, ValueError) as e:
pass
if is_function:
learn_more = find_learn_more_set(arguments[0])
if learn_more:
result.append({
"title": "Learn More",
"input": '',
"output": learn_more
})
return result
def prepare_cards(self, parsed, arguments, evaluator, evaluated):
components, cards, evaluated, is_function = self.get_cards(
arguments, evaluator, evaluated)
if is_function:
latex_input = ''.join([
'<script type="math/tex; mode=display">',
latexify(parsed, evaluator), '</script>'
])
else:
latex_input = mathjax_latex(evaluated)
result = []
ambiguity = self.disambiguate(arguments)
if ambiguity:
result.append({
"ambiguity": ambiguity[0],
"description": ambiguity[1]
})
result.append({
"title": "SymPy",
"input": removeSymPy(parsed),
"output": latex_input
})
if cards:
if any(get_card(c).is_multivariate() for c in cards):
result[-1].update({
"num_variables":
len(components['variables']),
"variables":
map(repr, components['variables']),
"variable":
repr(components['variable'])
})
# If no result cards were found, but the top-level call is to a
# function, then add a special result card to show the result
if not cards and not components['variable'] and is_function:
result.append({
'title':
'Result',
'input':
removeSymPy(parsed),
'output':
format_by_type(evaluated, arguments, mathjax_latex)
})
else:
var = components['variable']
# If the expression is something like 'lcm(2x, 3x)', display the
# result of the function before the rest of the cards
if is_function and not is_function_handled(arguments[0]):
result.append({
"title":
"Result",
"input":
"",
"output":
format_by_type(evaluated, arguments, mathjax_latex)
})
line = "simplify(input_evaluated)"
simplified = evaluator.eval(line,
use_none_for_exceptions=True,
repr_expression=False)
if (simplified != None and simplified != evaluated
and arguments.args and len(arguments.args) > 0
and simplified != arguments.args[0]):
result.append({
"title": "Simplification",
"input": repr(simplified),
"output": mathjax_latex(simplified)
})
elif arguments.function == 'simplify':
result.append({
"title": "Simplification",
"input": "",
"output": mathjax_latex(evaluated)
})
for card_name in cards:
card = get_card(card_name)
if not card:
continue
try:
result.append({
'card':
card_name,
'var':
repr(var),
'title':
card.format_title(evaluated),
'input':
card.format_input(repr(evaluated), components),
'pre_output':
latex(card.pre_output_function(evaluated, var)),
'parameters':
card.card_info.get('parameters', [])
})
except (SyntaxError, ValueError) as e:
pass
if is_function:
learn_more = find_learn_more_set(arguments[0])
if learn_more:
result.append({
"title": "Learn More",
"input": '',
"output": learn_more
})
return result
