安装第三方库

pip install pdfminer3k

配置注册百度翻译平台账号，获取appid 及key

详细代码

import hashlib

import random

import urllib.parse

import requests

from concurrent import futures

from io import StringIO

from pdfminer.pdfinterp import PDFResourceManager

from pdfminer.pdfinterp import process_pdf

from pdfminer.converter import TextConverter

from pdfminer.layout import LAParams

def read_from_pdf(file_path):

'''

解析pdf文件

'''

with open(file_path, 'rb') as file:

resource_manager = PDFResourceManager()

return_str = StringIO()

lap_params = LAParams()

device = TextConverter(

resource_manager, return_str, laparams=lap_params)

process_pdf(resource_manager, device, file)

device.close()

content = return_str.getvalue()

return_str.close()

return content

def create_sign(q, appid, salt, key):

'''

制造签名

'''

sign = str(appid) + str(q) + str(salt) + str(key)

md5 = hashlib.md5()

md5.update(sign.encode('utf-8'))

return md5.hexdigest()

def create_url(q, url):

'''

根据参数构造query字典

'''

fro = 'auto'

to = 'zh'

salt = random.randint(32768, 65536)

sign = create_sign(q, appid, salt, key)

url = url+'?appid='+str(appid)+'&q='+urllib.parse.quote(q)+'&from='+str(fro)+'&to='+str(to)+'&salt='+str(salt)+'&sign='+str(sign)

return url

def translate(q):

url = 'http://api.fanyi.baidu.com/api/trans/vip/translate'

url = create_url(q, url)

r = requests.get(url)

txt = r.json()

if txt.get('trans_result', -1) == -1:

print('程序已经出错，请查看报错信息：\n{}'.format(txt))

return '这一部分翻译错误\n'

return txt['trans_result'][0]['dst']

def clean_data(data):

'''

将输入的data返回成为段落组成的列表

'''

data = data.replace('\n\n', '闲谈后')

data = data.replace('\n', ' ')

return data.split('闲谈后')

def _main(pdf_path, txt_path):

# try:

data = read_from_pdf(pdf_path)

data_list = clean_data(data)

with futures.ThreadPoolExecutor(20) as excuter:

zh_txt = excuter.map(translate, data_list)

# zh_txt = [translate(txt) for txt in data_list]

zh_txt = list(zh_txt)

article = '\n\n'.join(zh_txt)

print(article)

with open(txt_path, 'w', encoding='utf-8') as f:

f.write(article)

# except Exception:

# return -1

if __name__ == '__main__':

appid =*** #填入你的 appid ，为int类型

key ='***' #填入你的 key ，为str类型

_main('1.pdf', '1.txt') #填入 pdf 路径与翻译完毕之后的 txt 路径