谷歌翻译

https://blog.csdn.net/yingshukun/article/details/53470424
https://my.oschina.net/auo/blog/222202
 1 import urllib.request
 2 import execjs
 3 
 4 
 5 class Py4Js():
 6 
 7     def __init__(self):
 8         self.ctx = execjs.compile("""
 9         function TL(a) {
10         var k = "";
11         var b = 406644;
12         var b1 = 3293161072;
13 
14         var jd = ".";
15         var $b = "+-a^+6";
16         var Zb = "+-3^+b+-f";
17 
18         for (var e = [], f = 0, g = 0; g < a.length; g++) {
19             var m = a.charCodeAt(g);
20             128 > m ? e[f++] = m : (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023),
21             e[f++] = m >> 18 | 240,
22             e[f++] = m >> 12 & 63 | 128) : e[f++] = m >> 12 | 224,
23             e[f++] = m >> 6 & 63 | 128),
24             e[f++] = m & 63 | 128)
25         }
26         a = b;
27         for (f = 0; f < e.length; f++) a += e[f],
28         a = RL(a, $b);
29         a = RL(a, Zb);
30         a ^= b1 || 0;
31         0 > a && (a = (a & 2147483647) + 2147483648);
32         a %= 1E6;
33         return a.toString() + jd + (a ^ b)
34     };
35 
36     function RL(a, b) {
37         var t = "a";
38         var Yb = "+";
39         for (var c = 0; c < b.length - 2; c += 3) {
40             var d = b.charAt(c + 2),
41             d = d >= t ? d.charCodeAt(0) - 87 : Number(d),
42             d = b.charAt(c + 1) == Yb ? a >>> d: a << d;
43             a = b.charAt(c) == Yb ? a + d & 4294967295 : a ^ d
44         }
45         return a
46     }
47     """)
48 
49     def getTk(self, text):
50         return self.ctx.call("TL", text)
51 
52 
53 
54 def open_url(url):
55     headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0'}
56     req = urllib.request.Request(url=url, headers=headers)
57     response = urllib.request.urlopen(req)
58     data = response.read().decode('utf-8')
59     return data
60 
61 
62 def translate(content, tk):
63     if len(content) > 4891:
64         print("翻译的长度超过限制！！！")
65         return
66 
67     content = urllib.parse.quote(content)
68 
69     url = "http://translate.google.cn/translate_a/single?client=t" 
70           "&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca" 
71           "&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&clearbtn=1&otf=1&pc=1" 
72           "&srcrom=0&ssel=0&tsel=0&kc=2&tk=%s&q=%s" % (tk, content)
73 
74     # 返回值是一个多层嵌套列表的字符串形式，解析起来还相当费劲，写了几个正则，发现也很不理想，
75     # 后来感觉，使用正则简直就是把简单的事情复杂化，这里直接切片就Ok了
76     result = open_url(url)
77 
78     end = result.find("",")
79     if end > 4:
80         print(result[4:end])
81 
82 
83 def main():
84     js = Py4Js()
85 
86     while 1:
87         content = input("输入待翻译内容：")
88 
89         if content == 'q!':
90             break
91 
92         tk = js.getTk(content)
93         translate(content, tk)
94 
95 
96 if __name__ == "__main__":
97     main()