t.py

from migen import *


class M(Module):
  def __init__(self):
    self.i_data = Signal()
    self.o_data = Signal()
    self.sync += [
      self.o_data.eq(self.i_data),
    ]


def stim():
  d = '01100111'
  for i in range(len(d)+1):
    if i < len(d):
      yield dut.i_data.eq(int(d[i]))
    yield
    if i > 0:
      print((yield dut.o_data))


dut = M()
run_simulation(dut, stim())