python pdf 转换成txt,csv，doc 及doc转换为pdf初级_把csv文件转为txt再转word再转pdf,需要用到哪些包?

pdf，搜索相关路径下pdf文档，把pdf文档移动到指定的路径下，再对该路径下的pdf文档进行转换

缺点：无法转换带有图片的pdf文档，转换后的文档格式问题
安装相应的库

1）pip install pdfminer3k 是pdfminer的Python 3端口

2）安装docx库

pip install python_docx

使用了os.walk对特定路径下的pdf文档进行查找，并对该文档进行移动

import  os
import shutil
import importlib
import sys
import re
def load_file():
    
    walk = os.walk(r'C:\Users\ALFIEL\Desktop\20190527')
    i=1
    for root, dirs,files in walk:
        print((root,dirs,files))
        for name in files:
            if len(re.findall('(\w)\.pdf',name))>=1:#添加条件对pdf文件进行筛选
                shutil.move(os.path.join(root,name), "C:\\Users\\SALFIEL\\Desktop\\pdfdocement\\"+str(i)+".pdf")
                i+=1
 
load_file()

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转换完整的代码如下：

#pdf转换器
from pdfminer.pdfparser import PDFParser, PDFDocument
from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter,process_pdf
from pdfminer.layout import LAParams
from pdfminer.converter import PDFPageAggregator
from pdfminer.pdfinterp import PDFTextExtractionNotAllowed
from docx import Document
from pdfminer.layout import *
document = Document()
import warnings
warnings.filterwarnings("ignore")
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from io import StringIO
from urllib.request import urlopen
import pandas as pd
import  os
def readPDF(pdfFile):#读取pdf文件
    #创建PDf 资源管理器 来管理共享资源
    rsrcmgr = PDFResourceManager()
    retstr = StringIO()#数据保存到内存中
    laparams = LAParams()
    device = TextConverter(rsrcmgr, retstr, laparams=laparams)
 
    process_pdf(rsrcmgr, device, pdfFile)
    device.close()
 
    content = retstr.getvalue()
    retstr.close()
    return content
def save_to_file(file_name, contents):#可以存储为相应的格式的文档，单纯以文字的pdf转换
    fh = open(file_name, 'w',encoding='utf-8')#若没有encoding='utf-8'则会爆出gbk编码错误。写入txt，csv需要转换格式utf-8
    fh.write(contents)
    fh.close()
 
# save_to_file('mobiles.txt', 'your contents str')
 
 
def main():
    #当某个目录下面寻找pdf文档文件并把它移动到某个路径下面
    #进行txt或则csv的转换
 
    walk=os.walk(r"C:\Users\ALFIEL\Desktop\pdfdocement")
    for root, dirs,files in walk:
        for name in files:
             if len(re.findall('(\w)\.pdf',name))>=1:#添加条件对pdf文件进行筛选
                    
                    pdfFile = open("{}".format(os.path.join(root,name)),'rb')
                    outputString = readPDF(pdfFile)
                    save_to_file('c.csv',outputString)
        
 
def save_to_doxc(file_name,path):
    #以二进制读取打开文件
    fn = open(file_name,'rb')
    #用文件对象创建pdf文档分析器
    parser = PDFParser(fn)
    #创建一个pdf文档
    doc = PDFDocument()
    #连接分析器与文档对象
    parser.set_document(doc)
    doc.set_parser(parser)
    # 提供初始化密码
    # 如果没有密码 就创建一个空的字符串
    doc.initialize()
    # 检测文档是否提供txt转换，不提供就忽略
    if not doc.is_extractable:
        
        raise PDFTextExtractionNotAllowed
    else:
        resource = PDFResourceManager()
        laparams = LAParams()
        device = PDFPageAggregator(resource,laparams=laparams)
        # 创建一个PDF解释器对象
        interpreter = PDFPageInterpreter(resource,device)
        num_page, num_image, num_curve, num_figure, num_TextBoxHorizontal = 0, 0, 0, 0, 0
        for i in doc.get_pages():#循环遍历列表，每次处理一个page的内容
            num_page += 1 
            interpreter.process_page(i)
            layout = device.get_result()
            print(layout)
            for x in layout:
                
                if isinstance(x,LTImage):
                     num_image += 1
                if isinstance(x,LTCurve): 
                    num_curve += 1
                if isinstance(x,LTFigure):  # figure对象
                    num_figure += 1
                if isinstance(x, LTTextBoxHorizontal):#判断变量时水平文本框对象
                    
                    num_TextBoxHorizontal += 1
                    
                # 水平文本框对象增一
                # 保存文本内容
 
                    if hasattr(x,"get_text"):#判断x对象是否有get_text方法
                        with open(r'{}'.format(path), 'a',encoding='utf-8') as f:    #生成doc文件的文件名及路径
                            results = x.get_text()
                            print(results)
                            f.write(results)
                            f.write('\n')
                        # 获取文本内容
                        
 
        print('对象数量：\n','页面数：%s\n'%num_page,'图片数：%s\n'%num_image,'曲线数：%s\n'%num_curve,'水平文本框：%s\n'
              %num_TextBoxHorizontal)
        print ('处理完成')
            
def main2():
    walk=os.walk(r"C:\Users\ALFIEL\Desktop\pdfdocement")
    for root, dirs,files in walk:
        for name in files:
             if len(re.findall('(\w)\.pdf',name))>=1:#添加条件对pdf文件进行筛选
 
                    pdfFile = os.open(r"{}".format(os.path.join(root,name)),os.O_RDWR)
                    save_to_doxc(pdfFile,path=os.path.join(root,name).replace('.pdf','.doc'))
 
if __name__ == '__main__':
    main2()

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注意：当写入txt，csv文件时，需要吧编码模式encoding为utf-8

doc转pdf或其他

还有通过调用win32接口进行doc的转换

from win32com.client import Dispatch, constants
 
def doc2pdf(input1, output):
    w = Dispatch('Word.Application')
    try:
        doc = w.Documents.Open(input1, ReadOnly=1)
        doc.SaveAs(output, 17)
        return True
    except Exception as e:
        print(e)
        return False
    finally:
        doc.Close()
def main():
    input1 = r'C:\Users\ALFIEL\Desktop\pdfdocement\1.doc'
    output = r'C:\Users\ALFIEL\Desktop\pdfdocement\6.pdf'
    rc = doc2html(input1, output)
    if rc:
        print('转换成功')
    else:
        print('转换失败')
    
if __name__ == '__main__':
    main()

```其中SaveAs(output,wdformat)

wdfomat参数如下：

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wdFormatDocument = 0
wdFormatDocument97= 0
wdFormatDocumentDefault = 16
wdFormatDOSText = 4
wdFormatDOSTextLineBreaks = 5
wdFormatEncodedText = 7
wdFormatFilteredHTML = 10
wdFormatFlatXML = 19
wdFormatFlatXMLMacroEnabled = 20
wdFormatFlatXMLTemplate = 21
wdFormatFlatXMLTemplateMacroEnabled = 22
wdFormatHTML = 8
wdFormatPDF = 17
wdFormatRTF = 6
wdFormatTemplate = 1
wdFormatTemplate97 = 1
wdFormatText = 2
wdFormatTextLineBreaks = 3
wdFormatUnicodeText = 7
wdFormatWebArchive = 9
wdFormatXML = 11
wdFormatXMLDocument = 12
wdFormatXMLDocumentMacroEnabled = 13
wdFormatXMLTemplate = 14
wdFormatXMLTemplateMacroEnabled = 15
wdFormatXPS = 18

照着字面意思应该能对应到相应的文件格式，如果你是office 2003可能支持不了这么多格式。word文件转html有两种格式可选wdFormatHTML、wdFormatFilteredHTML（对应数字8、10），区别是如果是wdFormatHTML格式的话，word文件里面的公式等ole对象将会存储成wmf格式，而选用wdFormatFilteredHTML的话公式图片将存储为gif格式，而且目测可以看出用wdFormatFilteredHTML生成的HTML明显比wdFormatHTML要干净许多。

原文链接：https://blog.csdn.net/weixin_41341221/article/details/100204128