Double quoting YAML keys and scalar values

yamlstr.py

import argparse
from yaml import load, dump, add_representer

try:
    from yaml import CDumper as Dumper
except ImportError:
    from yaml import Dumper

def rep(dumper, data):
    return dumper.represent_scalar('tag:yaml.org,2002:str', data, style=None)

def process_file(file):
    add_representer(unicode, rep)
    with open(file, 'r') as f:
        doc = load(f.read(), Loader=Loader)
        yml = dump(doc,
                default_flow_style=False,
                allow_unicode=True,
                default_style='"',
                line_break=False, width=10000000
                )
        print yml

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Stringify YAML')
    parser.add_argument('file')
    args = parser.parse_args()
    process_file(args.file)