Update IRT.py

Author: tswsxk

EduCDM/IRT/GD/IRT.py

@@ -38,8 +38,7 @@ def forward(self, user, item):
             a = self.a_range * torch.sigmoid(a)
         else:
             a = F.softplus(a)
-        if torch.max(theta != theta) or torch.max(a != a) or torch.max(b != b):
-            # pragma: no cover
+        if torch.max(theta != theta) or torch.max(a != a) or torch.max(b != b):  # pragma: no cover
             raise ValueError('ValueError:theta,a,b may contains nan!  The value_range or a_range is too large.')
         return self.irf(theta, a, b, c, **self.irf_kwargs)