思路：

第一步：适用python把需要导出的pdf文件单词导出到txt

第二步：把导出的txt导入到软件单词库，例如，金山词霸等软件内

第三步：熟练掌握以及删除单词库部分单词，达到对英文标准的单词记忆，方便理解专业信息。

以下代码演示如何将py当前目录下的Workspace子目录里的PDF里的英语单词提取出来。

import pdfplumber
import glob,osWordDict = dict()def isWord(word):retVal = Trueif len(word) < 5 or word.isidentifier() == False or word.isascii() == False:retVal = Falseelse:for c in word:if c in ['0','1', '2', '3', '4', '5', '6', '7', '8', '9', '_']:retVal = Falsereturn retVal#DIR=r"E:\GetEnglishDictionary"
DIR = os.getcwd() + "\\workspace\\"
temp=os.listdir(DIR)
Dirlist=[]
for i in temp:if (i.find(".pdf"))!= -1:Dirlist.append(i)try:#  outfor dir in Dirlist:print ("Analyse {} file".format(dir))#file=glob.glob(os.path.join(DIR+"\\"+dir, "*.*"))pdffile = DIR + "\\" + dirwordDictFile = pdffile.replace(".pdf", "_dict") + ".txt"dictFile = open(wordDictFile, 'w', encoding="utf-8")with pdfplumber.open(pdffile) as pdf:#for j in range(1, 2):pageNum = len(pdf.pages)progress = 0now = 0pageIndex = 0for page in pdf.pages:pageIndex = pageIndex + 1progress = int(pageIndex * 100/ pageNum)if progress >= now + 1:print(pdffile + " : " + str(progress) + " %")now = progress# 读取PDF文档第i+1页#page = pdf.pages[j]# page.extract_text()函数即读取文本内容txt = page.extract_text()txt = txt.replace(',', ' ')txt = txt.replace('\n', ' ')#words = ''.join(txt.split('\n')[:-1])#vols = str(words).split(' ')vols = str(txt).split(' ')for vol in vols:if isWord(vol) == True:#print(vol)tst = WordDict.get(vol.capitalize())if tst == None:WordDict[vol.capitalize()] = voldictFile.write( vol + "\n")#str(pageIndex) + " " +##dictFile.close()print("共 " + str(pageNum) + " 页，提取单词：" + str(len(WordDict)) + " 个")except Exception as e :print(repr(e))finally:print("finish write")