def dmp_eject(f, u, K, front=False):
 (f, h) = (dmp_to_dict(f, u), {})
 n = K.ngens
 v = ((u - K.ngens) + 1)
 for (monom, c) in f.items():
  if front:
   (g_monom, f_monom) = (monom[:n], monom[n:])
  else:
   (g_monom, f_monom) = (monom[(- n):], monom[:(- n)])
  if (f_monom in h):
   h[f_monom][g_monom] = c
  else:
   h[f_monom] = {g_monom: c}
 for (monom, c) in h.items():
  h[monom] = K(c)
 return dmp_from_dict(h, (v - 1), K)

def dmp_eject ( f , u , K , front = False ) : ( f , h ) = ( dmp_to_dict ( f , u ) , { } ) n = K . ngens v = ( ( u - K . ngens ) + 1 ) for ( monom , c ) in f . items ( ) : if front : ( g_monom , f_monom ) = ( monom [ : n ] , monom [ n : ] ) else : ( g_monom , f_monom ) = ( monom [ ( - n ) : ] , monom [ : ( - n ) ] ) if ( f_monom in h ) : h [ f_monom ] [ g_monom ] = c else : h [ f_monom ] = { g_monom : c } for ( monom , c ) in h . items ( ) : h [ monom ] = K ( c ) return dmp_from_dict ( h , ( v - 1 ) , K )
convert f from k[x .