breaking a few lines

Author: fchapoton

src/sage/modular/abvar/abvar.py

@@ -41,15 +41,18 @@
 from sage.structure.parent_base import ParentWithBase
 from .morphism import HeckeOperator, Morphism, DegeneracyMap
 from .torsion_subgroup import RationalTorsionSubgroup, QQbarTorsionSubgroup
-from .finite_subgroup import (FiniteSubgroup_lattice, FiniteSubgroup, TorsionPoint)
-from .cuspidal_subgroup import CuspidalSubgroup, RationalCuspidalSubgroup, RationalCuspSubgroup
+from .finite_subgroup import (FiniteSubgroup_lattice, FiniteSubgroup,
+                              TorsionPoint)
+from .cuspidal_subgroup import (CuspidalSubgroup, RationalCuspidalSubgroup,
+                                RationalCuspSubgroup)
 from sage.rings.all import ZZ, QQ, QQbar, Integer
 from sage.arith.all import LCM, divisors, prime_range, next_prime
 from sage.rings.ring import is_Ring
 from sage.rings.polynomial.polynomial_ring_constructor import PolynomialRing
 from sage.rings.infinity import infinity
 from sage.modules.free_module import is_FreeModule
-from sage.modular.arithgroup.all import is_CongruenceSubgroup, is_Gamma0, is_Gamma1, is_GammaH
+from sage.modular.arithgroup.all import (is_CongruenceSubgroup, is_Gamma0,
+                                         is_Gamma1, is_GammaH)
 from sage.modular.modsym.all import ModularSymbols
 from sage.modular.modsym.space import ModularSymbolsSpace
 from sage.modular.modform.constructor import Newform
@@ -67,7 +70,7 @@
             ['cremona_letter_code', 'CremonaDatabase'])
 
 
-def is_ModularAbelianVariety(x):
+def is_ModularAbelianVariety(x) -> bool:
     """
     Return True if x is a modular abelian variety.