search / replace with awareness of relative module

gistfile1.txt

#!/usr/bin/env python3
import os

files = [

]

for f in files:
    cwd = os.getcwd()
    path = os.path.dirname(f)

    op = ""

    for s in range(path.count("/")+1):
      op = os.path.join(op, os.pardir)

    import fileinput

    for line in fileinput.input(f, inplace = 1):
      output = line.replace("const logger = require('winston');", "const { logger } = require('%s/lib/logger')" % (op))
      output = output.rstrip()
      print(output)