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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def read_reqs_file(reqs_name):
 """ Read requirements file for given requirements group. """

    path_reqs_file = os.path.join(
            "requirements", "reqs-{}.txt".format(reqs_name))
    with open(path_reqs_file, 'r') as reqs_file:
        return [pkg.rstrip() for pkg in reqs_file.readlines()
                if not pkg.startswith("#")]