import sage.libs.ntl.all as ntl12from sage.libs.pari.all import pari, pari_gen, PariError34from sage.libs.mwrank.all import (mwrank_EllipticCurve, mwrank_MordellWeil,5mwrank_initprimes,6get_precision as mwrank_get_precision,7set_precision as mwrank_set_precision)8910import symmetrica.all as symmetrica1112from cremona.all import CremonaModularSymbols131415from sage.misc.lazy_import import lazy_import16lazy_import('sage.libs.gap.libgap', 'libgap')171819