def __call__(self, quantity):
"""Overload the function call operator to convert units."""
if not hasattr(quantity, 'unit'):
return Quantity(quantity, self)
elif compatible(self, quantity.unit):
return Quantity(
quantity.num * quantity.unit.squeeze() / self.squeeze(), self)
else:
raise IncompatibleUnitsError()
def __call__(self, quantity):
"""Overload the function call operator to convert units."""
if not hasattr(quantity, 'unit'):
return Quantity(quantity, self)
elif compatible(self, quantity.unit):
return Quantity(quantity.num *
quantity.unit.squeeze() /
self.squeeze(),
self)
else:
raise IncompatibleUnitsError()
def cancel(numer, denom):
"""Cancel out compatible units in the given numerator and denominator.
Return a triple of the implied quantity multiplier that has been
squeezed out, the new numerator and the new denominator."""
multiplier = 1
simple_numer = numer[:]
simple_denom = denom[:]
for nleaf in numer:
remaining_denom = simple_denom[:]
for dleaf in remaining_denom:
if compatible(nleaf, dleaf):
multiplier *= nleaf.squeeze() / dleaf.squeeze()
simple_numer.remove(nleaf)
simple_denom.remove(dleaf)
break
return (simple_numer, simple_denom, multiplier)
def cancel(numer, denom):
"""Cancel out compatible units in the given numerator and denominator.
Return a triple of the new numerator, the new denominator, the implied
quantity multiplier that has been squeezed out."""
multiplier = 1
simple_numer = numer[:]
simple_denom = denom[:]
for nleaf in numer:
remaining_denom = simple_denom[:]
for dleaf in remaining_denom:
if compatible(nleaf, dleaf):
multiplier *= nleaf.squeeze() / dleaf.squeeze()
simple_numer.remove(nleaf)
simple_denom.remove(dleaf)
break
return (simple_numer, simple_denom, multiplier)
def __eq__(self, other):
if not compatible(self.unit, other.unit):
return False
else:
return cmp(self, other) == 0
def _ensure_same_type(self, other):
"""docstring for ensure_same_type"""
if not compatible(self.unit, other.unit):
raise IncompatibleUnitsError()
def __eq__(self, other):
if not compatible(self.unit, other.unit):
return False
else:
return cmp(self, other) == 0
def _ensure_same_type(self, other):
"""docstring for ensure_same_type"""
if not compatible(self.unit, other.unit):
raise IncompatibleUnitsError()