def expand(expression, variable=None):
expression = expand_(expression)
if isinstance(expression, Basic) and expression.is_rational_function():
if variable is None:
variable = extract_var(expression)
return apart(expression, variable)
return expression
def expand(expression, variable = None):
expression = expand_(expression)
if isinstance(expression, Basic) and expression.is_rational_function():
if variable is None:
variable = extract_var(expression)
return apart(expression, variable)
return expression
def expand(expression, variable = None):
expression = expand_(expression)
if isinstance(expression, Basic) and expression.is_rational_function():
# Éviter d'appeler `apart()` pour rien, d'autant que FloatFrac() n'est
# pas compatible avec apart() (sympy v0.7.2).
num, den = expression.as_numer_denom()
if den.free_symbols:
if variable is None:
variable = extract_var(expression)
return apart(expression, variable)
return expression
