python百度翻译api

### 使用 Python 调用百度翻译 API

为了实现这一功能，首先需要安装 `requests` 库以便发送 HTTP 请求。可以通过 pip 安装该库：

pip install requests

下面是一个完整的例子展示如何利用 Python 来调用百度翻译 API 进行文本翻译[^2]。

#### 导入必要的模块并设置应用信息

import hashlib
import random
import time
import requests
from urllib.parse import urlencode

app_id = 'your_app_id'
secret_key = 'your_secret_key'

def translate_text(text, from_lang='auto', to_lang='en'):
    """
    Translate text using Baidu Translation API.
    
    :param text: Text that needs translating.
    :param from_lang: Source language code (default is auto).
    :param to_lang: Target language code (default is English).
    :return: Translated result as a string or None on failure.
    """

    salt = str(random.randint(32768, 65536))
    timestamp = str(int(time.time()))
    sign_raw = app_id + text + salt + timestamp + secret_key
    sign = hashlib.md5(sign_raw.encode('utf-8')).hexdigest()

#### 构建请求参数并向服务器发起 GET 请求

    params = {
        'q': text,
        'from': from_lang,
        'to': to_lang,
        'appid': app_id,
        'salt': salt,
        'timestamp': timestamp,
        'sign': sign
    }

    url = f'https://fanyi-api.baidu.com/api/trans/vip/translate?{urlencode(params)}'
    try:
        response = requests.get(url)
        if response.status_code == 200:
            json_result = response.json()
            translated_text = json_result['trans_result'][0]['dst']
            return translated_text
        else:
            print(f"Error occurred while calling the translation API: {response.text}")
            return None
    except Exception as e:
        print(e)
        return None

此函数接受待翻译的文字以及源语言和目标语言作为输入参数，并返回已翻译的结果字符串。如果发生错误，则会打印相应的消息并将结果设为 `None`。