def _read_dict(vec):
# DICT_FORMAT
# {'variable': {exponent: coefficient, ...}, ...}
_var = []
_vec = {}
for var in vec:
str_check(var)
dict_check(vec[var])
for exp in vec[var]:
int_check(exp)
number_check(vec[var][exp])
_var.append(var)
_vec.update(vec)
return _var, _vec
def _read_vars(self, *vars):
_var = {}
for var in vars:
if isinstance(var, numbers.Number):
if len(self._var) == 0:
_var[self._dfvar] = var
else:
_var[self._var[0]] = var
elif isinstance(var, dict):
_var = var
return var
else:
tuple_check(var)
if len(var) != 2:
raise DefinitionError(
'Tuple of variable name and corresponding value in need.'
)
str_check(var[0])
number_check(var[1])
if var[0] in _var:
raise DefinitionError(
'Only one set of variable name and corresponding value taken.'
)
elif var[0] not in self._var:
raise KeywordError('Variable \'%s\' is not found.' %
var[0])
else:
_var[var[0]] = var[1]
if _var == {}: return None
if len(_var) != len(self._var):
for var in _var:
self._var.remove(var)
var = '\', \''.join(self._var)
raise KeywordError('Variable \'%s\' should be assigned.' % var)
return _var
def default(self, var=None):
if var is None:
self._dfvar = _dfvar
else:
str_check(var)
self._dfvar = var