Small changes to please cython-lint

pyproject.toml

@@ -40,8 +40,25 @@ requires = ["meson-python>=0.13", "cython>=3.0,<3.1"]
 build-backend = "mesonpy"
 
 [tool.cython-lint]
+# E129 visually indented line with same indent as next logical line
+# Reasoning: this rule is a little controversial
+#            (see https://github.com/PyCQA/pycodestyle/issues/386)
+#            and we ignore it to avoid needing additional indentation after
+#            long logical statements.
+#
+# E501 line too long (128 > 120 characters)
+# Reasoning: this is a work in progress and will be enforced once a line length
+#            and refactor has taken place. See issue #214
+#
+# E741 ambiguous variable name
+# Reasoning: many places it makes sense to use l or other letters as variable
+#            names as it is standard in mathematical notation.
+#
+# E743 ambiguous function definition
+# Reasoning: this is a work in progress and will be enforced after #210 is
+#            resolved.
 max-line-length = 120
-ignore = ['E128','E129','E202','E221','E222','E261','E262','E265','E501','E731','E741','E743']
+ignore = ['E129','E501','E741','E743']
 exclude = 'src/flint/flintlib/.*'
 
 [tool.spin]

src/flint/flint_base/flint_base.pyx

@@ -780,7 +780,9 @@ cdef class flint_mat(flint_elem):
     def repr(self):
         # XXX
         return "%s(%i, %i, [%s])" % (type(self).__name__,
-            self.nrows(), self.ncols(), (", ".join(map(str, self.entries()))))
+                                     self.nrows(),
+                                     self.ncols(),
+                                     ", ".join(map(str, self.entries())))
 
     def str(self, *args, **kwargs):
         tab = self.table()

src/flint/functions/showgood.pyx

@@ -38,7 +38,8 @@ cdef goodstr(x):
 
 
 def good(func, slong prec=0, slong maxprec=0, slong dps=0,
-        slong maxdps=0, slong padding=10, bint verbose=False, bint show=False, bint parts=True, metric=None):
+         slong maxdps=0, slong padding=10, bint verbose=False,
+         bint show=False, bint parts=True, metric=None):
     """
     Evaluates *func*, automatically increasing the precision to get
     a result accurate to the current working precision (or the
@@ -81,7 +82,7 @@ def good(func, slong prec=0, slong maxprec=0, slong dps=0,
         maxprec = 10 * prec + 100
 
     if metric == "abssum":
-        metric = lambda L: sum(abs(c) for c in L)
+        def metric(L): return sum(abs(c) for c in L)
 
     # for printing
     if dps == 0:

src/flint/test/test_all.py

@@ -1921,7 +1921,7 @@ def test_fmpz_mod_poly():
     R_other = fmpz_mod_poly_ctx(F_other)
 
     assert raises(lambda: fmpz_mod_poly(1, "A"), TypeError) # Need a valid context
-    assert raises(lambda: R(R_other([1,2,3])), ValueError), f"{R(R_other([1,2,3])) = }" # moduli must match
+    assert raises(lambda: R(R_other([1,2,3])), ValueError) # moduli must match
     assert raises(lambda: R(F_other(2)), ValueError) # moduli must match
     assert raises(lambda: R([F(1), F_other(2)]), ValueError) # moduli must match
     assert raises(lambda: R([F(1), "A"]), TypeError) # need to be able to cast to fmpz_mod
@@ -2120,7 +2120,7 @@ def test_fmpz_mod_poly():
         assert raises(lambda: f % f_bad, ValueError)
         assert raises(lambda: 123 % f_bad, DomainError)
         assert raises(lambda: f % "AAA", TypeError)
-        assert raises(lambda: tuple() % f, TypeError), f'{"AAA" % f = }'
+        assert raises(lambda: tuple() % f, TypeError)
 
         assert f % 1 == 0
         assert R_test.one() % 1 == 0
@@ -2550,7 +2550,7 @@ def test_polys():
         assert P([S(1)]) == P([1]) == P(P([1])) == P(1)
 
         assert raises(lambda: P([None]), TypeError)
-        assert raises(lambda: P(object()), TypeError), f"{P(object()) = }"
+        assert raises(lambda: P(object()), TypeError)
         assert raises(lambda: P(None), TypeError)
         assert raises(lambda: P(None, None), TypeError)
         assert raises(lambda: P([1,2], None), TypeError)
@@ -2903,7 +2903,7 @@ def quick_poly():
         assert ctx.constant(1) == mpoly({(0, 0): 1}) == P(1, ctx=ctx)
 
         assert raises(lambda: P([None]), TypeError)
-        assert raises(lambda: P(object()), TypeError), f"{P(object()) = }"
+        assert raises(lambda: P(object()), TypeError)
         assert raises(lambda: P(None), TypeError)
         assert raises(lambda: P(None, None), TypeError)
         assert raises(lambda: P([1,2], None), TypeError)

src/flint/types/acb.pyx

@@ -88,15 +88,6 @@ cdef any_as_acb_or_notimplemented(x):
     return t
 
 
-# cdef any_as_arb_or_acb(x):
-#     if typecheck(x, arb) or typecheck(x, acb):
-#         return x
-#     try:
-#         return arb(x)
-#     except (TypeError, ValueError):
-#         return acb(x)
-
-
 # Copied with modifications from sage/rings/complex_arb.pyx
 @cython.internal
 cdef class IntegrationContext:
@@ -1210,7 +1201,7 @@ cdef class acb(flint_scalar):
             T3 = _acb_vec_init(r + 3)
             T4 = _acb_vec_init(r + 4)
             acb_modular_theta_jet(T1, T2, T3, T4,
-                              (<acb>z).val, (<acb>tau).val, r + 1, getprec())
+                                  (<acb>z).val, (<acb>tau).val, r + 1, getprec())
             acb_set((<acb>t1).val, T1 + r)
             acb_set((<acb>t2).val, T2 + r)
             acb_set((<acb>t3).val, T3 + r)
@@ -1556,7 +1547,7 @@ cdef class acb(flint_scalar):
         if abc:
             flags |= 16
         acb_hypgeom_2f1((<acb>u).val, (<acb>a).val, (<acb>b).val, (<acb>c).val,
-            (<acb>self).val, flags, getprec())
+                        (<acb>self).val, flags, getprec())
         return u
 
     def chebyshev_t(s, n):
@@ -1764,7 +1755,7 @@ cdef class acb(flint_scalar):
         w = acb.__new__(acb)
         z = acb.__new__(acb)
         acb_hypgeom_airy((<acb>u).val, (<acb>v).val,
-                        (<acb>w).val, (<acb>z).val, (<acb>s).val, getprec())
+                         (<acb>w).val, (<acb>z).val, (<acb>s).val, getprec())
         return u, v, w, z
 
     def lambertw(s, branch=0, bint left=False, bint middle=False):
@@ -2621,9 +2612,9 @@ cdef class acb(flint_scalar):
 
     @staticmethod
     def integral(func, a, b, params=None,
-            rel_tol=None, abs_tol=None,
-            deg_limit=None, eval_limit=None, depth_limit=None,
-            use_heap=None, verbose=None):
+                 rel_tol=None, abs_tol=None,
+                 deg_limit=None, eval_limit=None, depth_limit=None,
+                 use_heap=None, verbose=None):
         r"""
         Computes the integral `\int_a^b f(x) dx` where the integrand
         *f* is defined by *func*.
@@ -2752,7 +2743,7 @@ cdef class acb(flint_scalar):
         Hpos = acb.__new__(acb)
         Hneg = acb.__new__(acb)
         acb_hypgeom_coulomb((<acb>F).val, (<acb>G).val, (<acb>Hpos).val, (<acb>Hneg).val,
-                        (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
+                            (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
         return F, G, Hpos, Hneg
 
     def coulomb_f(self, l, eta):
@@ -2768,7 +2759,7 @@ cdef class acb(flint_scalar):
         eta = any_as_acb(eta)
         F = acb.__new__(acb)
         acb_hypgeom_coulomb((<acb>F).val, NULL, NULL, NULL,
-                        (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
+                            (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
         return F
 
     def coulomb_g(self, l, eta):
@@ -2784,5 +2775,5 @@ cdef class acb(flint_scalar):
         eta = any_as_acb(eta)
         G = acb.__new__(acb)
         acb_hypgeom_coulomb(NULL, (<acb>G).val, NULL, NULL,
-                        (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
+                            (<acb>l).val, (<acb>eta).val, (<acb>self).val, getprec())
         return G

src/flint/types/acb_mat.pyx

@@ -775,29 +775,29 @@ cdef class acb_mat(flint_mat):
         if n != 0:
             if algorithm == "approx":
                 acb_mat_approx_eig_qr(acb_mat_entry(E.val, 0, 0),
-                    LP, RP,  s.val, magp, maxiter, getprec())
+                                      LP, RP,  s.val, magp, maxiter, getprec())
             else:
                 acb_mat_approx_eig_qr(acb_mat_entry(E.val, 0, 0),
-                    NULL, RP, s.val, magp, maxiter, getprec())
+                                      NULL, RP, s.val, magp, maxiter, getprec())
                 if multiple:
                     if left or right:
                         raise NotImplementedError("eigenvectors not supported with multiple=True")
                     if algorithm == "rump":
                         success = acb_mat_eig_multiple_rump(acb_mat_entry(E.val, 0, 0),
-                            s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
+                                                            s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
                     else:
                         success = acb_mat_eig_multiple(acb_mat_entry(E.val, 0, 0),
-                            s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
+                                                       s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
                 else:
                     if algorithm == "rump":
                         success = acb_mat_eig_simple_rump(acb_mat_entry(E.val, 0, 0),
-                            LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
+                                                          LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
                     elif algorithm == "vdhoeven_mourrain":
                         success = acb_mat_eig_simple_vdhoeven_mourrain(acb_mat_entry(E.val, 0, 0),
-                            LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
+                                                                       LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
                     else:
                         success = acb_mat_eig_simple(acb_mat_entry(E.val, 0, 0),
-                            LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
+                                                     LP, RP, s.val, acb_mat_entry(E.val, 0, 0), RP, prec)
                 if not (nonstop or success):
                     raise ValueError("failed to isolate eigenvalues (try higher prec, multiple=True for multiple eigenvalues, or nonstop=True to avoid the exception)")
         if tol is not None:

src/flint/types/acb_poly.pyx

@@ -197,7 +197,7 @@ cdef class acb_poly(flint_poly):
         return u
 
     def __pos__(self):
-        return self # ?
+        return self  # ?
 
     def __neg__(s):
         u = acb_poly.__new__(acb_poly)
@@ -261,7 +261,7 @@ cdef class acb_poly(flint_poly):
         q = acb_poly.__new__(acb_poly)
         r = acb_poly.__new__(acb_poly)
         if acb_poly_divrem((<acb_poly>q).val, (<acb_poly>r).val,
-                (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
+                           (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
             return q
         else:
             raise ZeroDivisionError("acb_poly leading coefficient must be nonzero")
@@ -281,7 +281,7 @@ cdef class acb_poly(flint_poly):
         q = acb_poly.__new__(acb_poly)
         r = acb_poly.__new__(acb_poly)
         if acb_poly_divrem((<acb_poly>q).val, (<acb_poly>r).val,
-                (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
+                           (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
             return r
         else:
             raise ZeroDivisionError("acb_poly leading coefficient must be nonzero")
@@ -301,7 +301,7 @@ cdef class acb_poly(flint_poly):
         q = acb_poly.__new__(acb_poly)
         r = acb_poly.__new__(acb_poly)
         if acb_poly_divrem((<acb_poly>q).val, (<acb_poly>r).val,
-                (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
+                           (<acb_poly>s).val, (<acb_poly>t).val, getprec()):
             return q, r
         else:
             raise ZeroDivisionError("acb_poly leading coefficient must be nonzero")

src/flint/types/acb_series.pyx

@@ -731,8 +731,9 @@ cdef class acb_series(flint_series):
         G = acb_series.__new__(acb_series)
         Hpos = acb_series.__new__(acb_series)
         Hneg = acb_series.__new__(acb_series)
-        acb_hypgeom_coulomb_series((<acb_series>F).val, (<acb_series>G).val, (<acb_series>Hpos).val, (<acb_series>Hneg).val,
-            (<acb>l).val, (<acb>eta).val, (<acb_series>self).val, cap, getprec())
+        acb_hypgeom_coulomb_series((<acb_series>F).val, (<acb_series>G).val, (<acb_series>Hpos).val,
+                                   (<acb_series>Hneg).val, (<acb>l).val, (<acb>eta).val,
+                                   (<acb_series>self).val, cap, getprec())
         (<acb_series>F).prec = cap
         (<acb_series>G).prec = cap
         (<acb_series>Hpos).prec = cap
@@ -747,7 +748,7 @@ cdef class acb_series(flint_series):
         cap = min(cap, (<acb_series>self).prec)
         F = acb_series.__new__(acb_series)
         acb_hypgeom_coulomb_series((<acb_series>F).val, NULL, NULL, NULL,
-            (<acb>l).val, (<acb>eta).val, (<acb_series>self).val, cap, getprec())
+                                   (<acb>l).val, (<acb>eta).val, (<acb_series>self).val, cap, getprec())
         (<acb_series>F).prec = cap
         return F
 
@@ -759,7 +760,7 @@ cdef class acb_series(flint_series):
         cap = min(cap, (<acb_series>self).prec)
         G = acb_series.__new__(acb_series)
         acb_hypgeom_coulomb_series(NULL, (<acb_series>G).val, NULL, NULL,
-            (<acb>l).val, (<acb>eta).val, (<acb_series>self).val, cap, getprec())
+                                   (<acb>l).val, (<acb>eta).val, (<acb_series>self).val, cap, getprec())
         (<acb_series>G).prec = cap
         return G
 

src/flint/types/arb.pyx

@@ -192,8 +192,8 @@ cdef class arb(flint_scalar):
         if rad is not None:
             rad = arb(rad)
             arb_add_error(self.val, (<arb>rad).val)
-            #rad = arf(rad)
-            #arb_add_error_arf(self.val, (<arf>rad).val)
+            # rad = arf(rad)
+            # arb_add_error_arf(self.val, (<arf>rad).val)
 
     cpdef bint is_zero(self):
         return arb_is_zero(self.val)
@@ -1629,7 +1629,7 @@ cdef class arb(flint_scalar):
         w = arb.__new__(arb)
         z = arb.__new__(arb)
         arb_hypgeom_airy((<arb>u).val, (<arb>v).val,
-                        (<arb>w).val, (<arb>z).val, (<arb>s).val, getprec())
+                         (<arb>w).val, (<arb>z).val, (<arb>s).val, getprec())
         return u, v, w, z
 
     @staticmethod
@@ -2281,7 +2281,7 @@ cdef class arb(flint_scalar):
         if abc:
             flags |= 16
         arb_hypgeom_2f1((<arb>u).val, (<arb>a).val, (<arb>b).val, (<arb>c).val,
-            (<arb>self).val, flags, getprec())
+                        (<arb>self).val, flags, getprec())
         return u
 
     @staticmethod
@@ -2622,7 +2622,7 @@ cdef class arb(flint_scalar):
         F = arb.__new__(arb)
         G = arb.__new__(arb)
         arb_hypgeom_coulomb((<arb>F).val, (<arb>G).val,
-                        (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
+                            (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
         return F, G
 
     def coulomb_f(self, l, eta):
@@ -2638,7 +2638,7 @@ cdef class arb(flint_scalar):
         eta = any_as_arb(eta)
         F = arb.__new__(arb)
         arb_hypgeom_coulomb((<arb>F).val, NULL,
-                        (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
+                            (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
         return F
 
     def coulomb_g(self, l, eta):
@@ -2654,5 +2654,5 @@ cdef class arb(flint_scalar):
         eta = any_as_arb(eta)
         G = arb.__new__(arb)
         arb_hypgeom_coulomb(NULL, (<arb>G).val,
-                        (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
+                            (<arb>l).val, (<arb>eta).val, (<arb>self).val, getprec())
         return G

src/flint/types/arb_poly.pyx

@@ -194,7 +194,7 @@ cdef class arb_poly(flint_poly):
         return u
 
     def __pos__(self):
-        return self # ?
+        return self  # ?
 
     def __neg__(s):
         u = arb_poly.__new__(arb_poly)
@@ -258,7 +258,7 @@ cdef class arb_poly(flint_poly):
         q = arb_poly.__new__(arb_poly)
         r = arb_poly.__new__(arb_poly)
         if arb_poly_divrem((<arb_poly>q).val, (<arb_poly>r).val,
-                (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
+                           (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
             return q
         else:
             raise ZeroDivisionError("arb_poly leading coefficient must be nonzero")
@@ -278,7 +278,7 @@ cdef class arb_poly(flint_poly):
         q = arb_poly.__new__(arb_poly)
         r = arb_poly.__new__(arb_poly)
         if arb_poly_divrem((<arb_poly>q).val, (<arb_poly>r).val,
-                (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
+                           (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
             return r
         else:
             raise ZeroDivisionError("arb_poly leading coefficient must be nonzero")
@@ -298,7 +298,7 @@ cdef class arb_poly(flint_poly):
         q = arb_poly.__new__(arb_poly)
         r = arb_poly.__new__(arb_poly)
         if arb_poly_divrem((<arb_poly>q).val, (<arb_poly>r).val,
-                (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
+                           (<arb_poly>s).val, (<arb_poly>t).val, getprec()):
             return q, r
         else:
             raise ZeroDivisionError("arb_poly leading coefficient must be nonzero")