Formatting

* Adding black as dev dependency
* Formatting pina code
* Formatting tests

pina/loss/lp_loss.py

@@ -1,10 +1,11 @@
-""" Module for LpLoss class """
+"""Module for LpLoss class"""
 
 import torch
 
 from ..utils import check_consistency
 from .loss_interface import LossInterface
 
+
 class LpLoss(LossInterface):
     r"""
     The Lp loss implementation class. Creates a criterion that measures
@@ -75,4 +76,4 @@ class LpLoss(LossInterface):
         loss = torch.linalg.norm((input - target), ord=self.p, dim=-1)
         if self.relative:
             loss = loss / torch.linalg.norm(input, ord=self.p, dim=-1)
-        return self._reduction(loss)
+        return self._reduction(loss)