fixing the 7 last E222 warnings

Author: fchapoton

src/sage/algebras/cluster_algebra.py

@@ -613,7 +613,7 @@ def theta_basis_decomposition(self):
                 y_exp = min(f_poly.dict())
                 coeff = f_poly.dict()[y_exp]
                 g_theta = tuple(g_vect + B*vector(y_exp))
-                out[g_theta] = out.get(g_theta, zero_A) +  A({zero_t + tuple(y_exp):coeff})
+                out[g_theta] = out.get(g_theta, zero_A) + A({zero_t + tuple(y_exp):coeff})
                 f_poly -= U({y_exp:coeff}) * A.theta_basis_F_polynomial(g_theta)
 
         return out

src/sage/groups/finitely_presented_named.py

@@ -381,7 +381,7 @@ def DiCyclicPresentation(n):
         raise ValueError('input integer must be greater than 1')
 
     F = FreeGroup(['a','b'])
-    rls =  F([1])**(2*n), F([2,2])*F([-1])**n, F([-2,1,2,1])
+    rls = F([1])**(2*n), F([2,2])*F([-1])**n, F([-2,1,2,1])
     return FinitelyPresentedGroup(F, rls)
 
 def SymmetricPresentation(n):

src/sage/numerical/interactive_simplex_method.py

@@ -4510,7 +4510,7 @@ def __init__(self, problem, basic_variables):
                              "for auxiliary problems")
         super().__init__()
         self._problem = problem
-        R =  problem.coordinate_ring()
+        R = problem.coordinate_ring()
         self._x_B = vector(R, [variable(R, v) for v in basic_variables])
 
     def __eq__(self, other):
@@ -4611,7 +4611,7 @@ def _latex_(self):
             headers.append("B^{-1} A_{%s}" % latex(entering))
         if show_ratios:
             headers.append(r"\hbox{Ratio}")
-        lines.append(" & ".join(headers) +  r" \\")
+        lines.append(" & ".join(headers) + r" \\")
         lines.append(r"\hline")
         Bi = self.B_inverse()
         c_B = self.c_B()

src/sage/structure/factorization.py

@@ -815,7 +815,7 @@ def _repr_(self):
         if len(self) == 0:
             return repr(self.__unit)
         s = ''
-        mul =  ' * '
+        mul = ' * '
         if cr:
             mul += '\n'
         x = self.__x[0][0]
@@ -846,7 +846,7 @@ def _repr_(self):
                 u = repr(self.__unit)
             else:
                 u = '(%s)'%self.__unit
-            s =  u + mul + s
+            s = u + mul + s
         return s
 
     def _latex_(self):
@@ -887,7 +887,7 @@ def _latex_(self):
                 u = self.__unit._latex_()
             else:
                 u = '\\left(%s\\right)'%self.__unit._latex_()
-            s =  u + ' \\cdot ' + s
+            s = u + ' \\cdot ' + s
         return s
 
     @cached_method