Dev Update (#582)

* Fix adaptive refinement (#571)


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Co-authored-by: Dario Coscia <93731561+dario-coscia@users.noreply.github.com>

* Remove collector

* Fixes

* Fixes

* rm unnecessary comment

* fix advection (#581)

* Fix tutorial .html link (#580)

* fix problem data collection for v0.1 (#584)

* Message Passing Module (#516)

* add deep tensor network block

* add interaction network block

* add radial field network block

* add schnet block

* add equivariant network block

* fix + tests + doc files

* fix egnn + equivariance/invariance tests

Co-authored-by: Dario Coscia <dariocos99@gmail.com>

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Co-authored-by: giovanni <giovanni.canali98@yahoo.it>
Co-authored-by: AleDinve <giuseppealessio.d@student.unisi.it>

* add type checker (#527)

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Co-authored-by: Filippo Olivo <filippo@filippoolivo.com>
Co-authored-by: Giovanni Canali <115086358+GiovanniCanali@users.noreply.github.com>
Co-authored-by: giovanni <giovanni.canali98@yahoo.it>
Co-authored-by: AleDinve <giuseppealessio.d@student.unisi.it>

pina/utils.py

@@ -193,3 +193,22 @@ def chebyshev_roots(n):
     k = torch.arange(n)
     nodes = torch.sort(torch.cos(pi * (k + 0.5) / n))[0]
     return nodes
+
+
+def check_positive_integer(value, strict=True):
+    """
+    Check if the value is a positive integer.
+
+    :param int value: The value to check.
+    :param bool strict: If True, the value must be strictly positive.
+        Default is True.
+    :raises AssertionError: If the value is not a positive integer.
+    """
+    if strict:
+        assert (
+            isinstance(value, int) and value > 0
+        ), f"Expected a strictly positive integer, got {value}."
+    else:
+        assert (
+            isinstance(value, int) and value >= 0
+        ), f"Expected a non-negative integer, got {value}."