Trac #34672: some care for trailing whitespaces

pycodestyle W2 and W3

here both in some py and pyx files

URL: https://trac.sagemath.org/34672
Reported by: chapoton
Ticket author(s): Frédéric Chapoton
Reviewer(s): Matthias Koeppe

Author: Release Manager

src/sage/algebras/cellular_basis.py

@@ -1,4 +1,4 @@
-r""" 
+r"""
 Cellular Basis
 ==============
 

src/sage/algebras/clifford_algebra_element.pyx

@@ -982,4 +982,3 @@ cdef class CohomologyRAAGElement(CliffordAlgebraElement):
                     del d[tp]
 
         return self.__class__(self._parent, d)
-

src/sage/algebras/exterior_algebra_groebner.pyx

@@ -715,4 +715,3 @@ cdef class GroebnerStrategyDegLex(GroebnerStrategy):
 
         from sage.combinat.combination import from_rank
         return FrozenBitset(from_rank(n, self.rank, deg))
-

src/sage/algebras/finite_dimensional_algebras/finite_dimensional_algebra_element.pyx

@@ -640,4 +640,3 @@ cdef class FiniteDimensionalAlgebraElement(AlgebraElement):
             True
         """
         return self.matrix().characteristic_polynomial()
-

src/sage/algebras/jordan_algebra.py

@@ -397,7 +397,7 @@ def _latex_(self):
             from sage.misc.latex import latex
             return latex(self._x)
 
-        def __bool__(self):
+        def __bool__(self) -> bool:
             """
             Return if ``self`` is non-zero.
 
@@ -411,8 +411,6 @@ def __bool__(self):
             """
             return bool(self._x)
 
-        
-
         def __eq__(self, other):
             """
             Check equality.
@@ -817,7 +815,7 @@ def _latex_(self):
             from sage.misc.latex import latex
             return "{} + {}".format(latex(self._s), latex(self._v))
 
-        def __bool__(self):
+        def __bool__(self) -> bool:
             """
             Return if ``self`` is non-zero.
 
@@ -834,8 +832,6 @@ def __bool__(self):
             """
             return bool(self._s) or bool(self._v)
 
-        
-
         def __eq__(self, other):
             """
             Check equality.

src/sage/algebras/lie_algebras/classical_lie_algebra.py

@@ -1332,7 +1332,7 @@ def _unicode_art_(self):
             from sage.typeset.unicode_art import unicode_art
             return unicode_art(self._combined_matrix())
 
-        def __bool__(self):
+        def __bool__(self) -> bool:
             r"""
             Return if ``self`` is nonzero.
 
@@ -1346,8 +1346,6 @@ def __bool__(self):
             """
             return bool(self._real) or bool(self._imag)
 
-        
-
         def __hash__(self):
             r"""
             Return the hash of ``self``.

src/sage/algebras/lie_algebras/lie_algebra_element.pyx

@@ -1997,4 +1997,3 @@ cdef class LyndonBracket(GradedLieBracket):
         if self._hash == -1:
             self._hash = hash(self._index_word)
         return self._hash
-

src/sage/algebras/quatalg/quaternion_algebra_cython.pyx

@@ -260,5 +260,3 @@ def rational_quaternions_from_integral_matrix_and_denom(A, Matrix_integer_dense
         v.append(x)
     mpz_clear(tmp)
     return v
-
-

src/sage/categories/crystals.py

@@ -2187,7 +2187,7 @@ def _call_(self, x):
                 cur = cur.e_string(s)
         return cur
 
-    def __bool__(self):
+    def __bool__(self) -> bool:
         """
         Return if ``self`` is a non-zero morphism.
 
@@ -2204,8 +2204,6 @@ def __bool__(self):
         """
         return any(self._on_gens(mg) is not None for mg in self._gens)
 
-    
-
     # TODO: Does this belong in the element_class of the Crystals() category?
     def to_module_generator(self, x):
         """

src/sage/categories/examples/commutative_additive_monoids.py

@@ -112,7 +112,7 @@ def zero(self):
         return self(())
 
     class Element(FreeCommutativeAdditiveSemigroup.Element):
-        def __bool__(self):
+        def __bool__(self) -> bool:
             """
             Check if ``self`` is not the zero of the monoid
 
@@ -126,6 +126,5 @@ def __bool__(self):
             """
             return any(x for x in self.value.values())
 
-        
 
 Example = FreeCommutativeAdditiveMonoid