flake8

lbmpy/moments.py

@@ -460,8 +460,8 @@ def set_up_shift_matrix(moments, stencil, velocity_symbols=sp.symbols("u_:3")):
     N = sp.simplify(MN * M.inv())
 
     assert N.is_lower, "Calculating the shift matrix gave not a lower diagonal matrix. Thus it failed"
-    assert sum(N[i,i] for i in range(len(stencil))) == len(stencil), "Calculating the shift matrix failed. " \
-                                              "There are entries on the diagonal which are not equal to one"
+    assert sum(N[i, i] for i in range(len(stencil))) == len(stencil), "Calculating the shift matrix failed. " \
+        "There are entries on the diagonal which are not equal to one"
 
     return N
 
@@ -604,7 +604,7 @@ def central_moment_reduced_monomial_to_polynomial_matrix(polynomials, stencil, v
     dim = len(stencil[0])
     if velocity_symbols is None:
         velocity_symbols = sp.symbols(f"u_:{dim}")
-    
+
     reduced_polynomials = non_aliased_polynomial_raw_moments(polynomials, stencil)
     reduced_monomials = sorted(extract_monomials(reduced_polynomials), key=exponent_tuple_sort_key)