replace_imports.py

#!/usr/bin/env python3

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

import sys
_, input_fn, output_fn, original_package, output_package = sys.argv

with open(input_fn) as input_file:
    txt = input_file.read()
with open(output_fn, 'w') as output_file:
    original_package = 'from ' + original_package
    output_package = 'from ' + output_package
    output_file.write(txt.replace(original_package, output_package))