def test_long_int():
 sigma = (((10 ** 21) * u.M_p) / (u.cm ** 2))
 sigma.to((u.M_sun / (u.pc ** 2)))

def test_long_int ( ) : sigma = ( ( ( 10 ** 21 ) * u . M_p ) / ( u . cm ** 2 ) ) sigma . to ( ( u . M_sun / ( u . pc ** 2 ) ) )
issue #672 .