Translate a yaml file with Yandex Translation API

translate.py

#!/usr/bin/env python3

import argparse;
import json;
import yaml;
import urllib.parse;
import urllib.request;

##
# Translation URI
##
uri = 'https://translate.yandex.net/api/v1.5/tr.json/translate?text=%s&lang=%s-%s&format=html&key=YANDEX-KEY';

##
# Functions
##

def translate (string):
    response = json.loads(urllib.request.urlopen(urllib.request.Request(uri % (urllib.parse.quote(string), args.source_locale, args.target_locale))).read().decode());
    return response['text'][0] if response['code'] == 200 else string;

def process (input):
    output = {};
    for (k, v) in input.items():
        output[k] = process(v) if type(v) is dict else translate(v);
    return output;

def read ():
     with open(args.source, 'r') as stream:
         try:
             return yaml.safe_load(stream);
         except yaml.YAMLError as exc:
             print(exc);

def write(data):
    with open(args.target, 'w') as stream:
        try:
            yaml.dump(data, stream, default_flow_style = False, allow_unicode = True, width = float('inf'))
        except yaml.YAMLError as exc:
            print(exc);

##
# Input Handling
##

parser = argparse.ArgumentParser(description = 'Translate the contents of a yaml file');
parser.add_argument('source', help = 'The source yaml file you wish to translate');
parser.add_argument('source_locale', help = 'The source file locale');
parser.add_argument('target', help = 'The target yaml file you wish to translate');
parser.add_argument('target_locale', help = 'The target file locale');
args = parser.parse_args();

write(process(read()));