Apply 4 suggestion(s) to 2 file(s)

docs/source/tutorial/basics.rst

@@ -213,20 +213,23 @@ and :ref:`tutorial_kekule`.
 
 Saving and loading Qsymm models
 -------------------------------------------------
-We can save and load Qsymm models.
+Qsymm models and identified symmetries don't guarantee consistent ordering and basis selection
+across multiple runs. To avoid irrerproducible results you may use the ``Model.tosympy`` method
+and serialize the resulting sympy expression as shown below.
 
 To save we do:
 
 .. jupyter-execute::
 
-    H2D_str = str(H2D.tosympy(nsimplify=True))
+    H2D_sympy = H2D.tosympy()
 
-    file = open("H2D.txt", "w")
-    file.write(H2D_str)
-    file.close()
+    with open("H2D.txt", "w") as f:
+        f.write(str(H2D))
 
 To load we do:
 
 .. jupyter-execute::
-    f = open('H2D.txt','r').read()
+    with open("H2D.txt") as f:
+        data = f.read()
+
     loaded_H2D = qsymm.Model(sympy.parsing.sympy_parser.parse_expr(f), momenta=['k_x', 'k_z'])

pytest.ini

@@ -9,4 +9,4 @@ filterwarnings =
     # Remove once this does not need to be ignored
     ignore:np\.asscalar\(a\) is deprecated since NumPy v1\.16, use a\.item\(\) instead:DeprecationWarning
     # Remove once setuptools figures it out
-    ignore:lib2to3:PendingDeprecationWarning
\ No newline at end of file
+    ignore:lib2to3:PendingDeprecationWarning