first version

.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+**/node_modules
+# roadhog-api-doc ignore
+/src/utils/request-temp.js
+_roadhog-api-doc
+
+# production
+/dist
+/.vscode
+
+# misc
+.DS_Store
+npm-debug.log*
+yarn-error.log
+
+/coverage
+.idea
+yarn.lock
+package-lock.json
+*bak
+.vscode
+
+# visual studio code
+.history
+*.log
+functions/*
+.temp/**
+
+# umi
+.umi
+.umi-production
+
+# screenshot
+screenshot
+.firebase
+.eslintcache
+
+build

README.MD

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+### 功能描述：
+
+    将深圳市电子发票贴到成公司报销单模板中，并导出为pdf文件。
+
+### 注意事项：
+
+只能运行在windows上，且已经安装了ms office。
+
+### 依赖：
+
+- python 3.7
+- python-pptx 负责操作pptx
+- PyMuPDF 负责操作pdf
+- comtypes 负责调用系统已安装的ppt程序，导出pdf
+- PyPDF2用于合并多个pdf文件
+
+### 安装：
+
+1. 安装python3.7
+
+2. 安装对应的第三方库
+
+```
+pip install -r requirements.txt
+```
+
+### 使用步骤：
+
+1、将电子发票pdf文件放到"inputs"文件夹；
+
+2、运行如下脚本，在"outputs"文件夹生成的pdf票据文件；
+
+```shell
+python .\invoice_converter.py
+```
+
+### 实现思路：
+
+完全按照手动贴票的流程进行：
+
+电子发票pdf------>PNG图片------>插入pptx模板（调整位置、大小）------>导出pdf文件
+

invoice_converter.py

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+#!/usr/bin/env Python
+# coding=utf-8
+
+import sys, datetime, fitz, os, codecs
+from pptx import Presentation
+from pptx.util import Cm
+import comtypes.client
+from PyPDF2 import PdfFileReader, PdfFileWriter, PdfFileMerger
+
+invoicePath = './inputs'
+tempImagePath = './temp/images'
+tempPptxPath = './temp/pptx'
+templatePptxPath = './凭证粘贴模板.pptx'
+outPath = './outputs'
+
+def pyMuPDF_fitz(pdfPath, imagePath):
+    # startTime_pdf2img = datetime.datetime.now()#开始时间
+
+    # print("imagePath="+imagePath)
+    baseName = os.path.basename(pdfPath)
+    pdfName = os.path.splitext(baseName)[0]
+    pdfDoc = fitz.open(pdfPath)
+
+    page = pdfDoc[0]
+    rotate = int(0)
+    # 每个尺寸的缩放系数为1.3，这将为我们生成分辨率提高2.6的图像。
+    # 此处若是不做设置，默认图片大小为：792X612, dpi=96
+    zoom_x = 2.5 #(1.33333333-->1056x816)   (2-->1584x1224)
+    zoom_y = 2.5
+    mat = fitz.Matrix(zoom_x, zoom_y).preRotate(rotate)
+    pix = page.getPixmap(matrix=mat, alpha=False)
+
+    if not os.path.exists(imagePath):#判断存放图片的文件夹是否存在
+        os.makedirs(imagePath) # 若图片文件夹不存在就创建
+
+    pix.writePNG('%s/%s.png' % (imagePath, pdfName))#将图片写入指定的文件夹内
+
+    # for pg in range(pdfDoc.pageCount):
+    #     page = pdfDoc[pg]
+    #     rotate = int(0)
+    #     # 每个尺寸的缩放系数为1.3，这将为我们生成分辨率提高2.6的图像。
+    #     # 此处若是不做设置，默认图片大小为：792X612, dpi=96
+    #     zoom_x = 2.2 #(1.33333333-->1056x816)   (2-->1584x1224)
+    #     zoom_y = 2.2
+    #     mat = fitz.Matrix(zoom_x, zoom_y).preRotate(rotate)
+    #     pix = page.getPixmap(matrix=mat, alpha=False)
+
+    #     if not os.path.exists(imagePath):#判断存放图片的文件夹是否存在
+    #         os.makedirs(imagePath) # 若图片文件夹不存在就创建
+
+    #     # pix.writePNG(imagePath+'/'+'images_%s.png' % pg)#将图片写入指定的文件夹内
+    #     pix.writePNG(imagePath+'/'+'%s_%s.png' % (pdfName, pg))#将图片写入指定的文件夹内
+
+    # endTime_pdf2img = datetime.datetime.now()#结束时间
+    # print('pdf2img时间=',(endTime_pdf2img - startTime_pdf2img).seconds)
+
+def batchPdf2Png(invoicePath, outPngPath):
+    files = os.listdir(invoicePath)
+    pdfFiles = [f for f in files if f.endswith((".pdf"))]
+    for pdfFile in pdfFiles:
+        fullpath = os.path.join(invoicePath, pdfFile)
+        pyMuPDF_fitz(fullpath, outPngPath)
+
+def insertPngInSlide(path_to_presentation, img_path):
+    prs = Presentation(path_to_presentation)
+
+    slide = prs.slides[0]
+    left, top, width, height= Cm(4.28), Cm(2.79), Cm(25.58), Cm(16.59)
+    pic = slide.shapes.add_picture(img_path, left, top, height=height, width=width)
+    prs.save('test.pptx')
+
+def batchInsertPngInSlide(path_to_tmpl_presentation, imgsPath):
+    left, top, width, height= Cm(4.28), Cm(2.79), Cm(25.58), Cm(16.59)
+
+    files = os.listdir(imgsPath)
+    pngfiles = [f for f in files if f.endswith((".png"))]
+    for pngfile in pngfiles:
+        fullpath = os.path.join(imgsPath, pngfile)
+
+        prs = Presentation(path_to_tmpl_presentation)
+        slide = prs.slides[0]        
+        pic = slide.shapes.add_picture(fullpath, left, top, height=height, width=width)
+        pptxPath = os.path.join(tempPptxPath, os.path.splitext(pngfile)[0]+'.pptx')
+        prs.save(pptxPath)
+
+def init_powerpoint():
+    powerpoint = comtypes.client.CreateObject("Powerpoint.Application")
+    powerpoint.Visible = 1
+    return powerpoint
+
+def ppt_to_pdf(powerpoint, inputFileName, outputFileName, formatType = 32):
+    if outputFileName[-3:] != 'pdf':
+        outputFileName = outputFileName.replace(".pptx","").replace(".ppt","") + ".pdf"
+    # print(inputFileName)
+    deck = powerpoint.Presentations.Open(inputFileName)
+    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
+    deck.Close()
+    # print('转换%s文件完成'%outputFileName)
+
+def convert_files_in_folder(powerpoint, folder, outPath):
+    files = os.listdir(folder)
+    pptfiles = [f for f in files if f.endswith((".ppt", ".pptx"))]
+    for pptfile in pptfiles:
+        fullpath = os.path.join(folder, pptfile)
+        pdfpath = os.path.join(outPath, os.path.splitext(pptfile)[0]+'.pdf')
+        ppt_to_pdf(powerpoint, fullpath, pdfpath)
+
+def del_file(path_data):
+    for i in os.listdir(path_data) :# os.listdir(path_data)#返回一个列表，里面是当前目录下面的所有东西的相对路径
+        file_data = path_data + "\\" + i#当前文件夹的下面的所有东西的绝对路径
+        if os.path.isfile(file_data) == True:#os.path.isfile判断是否为文件,如果是文件,就删除.如果是文件夹.递归给del_file.
+            os.remove(file_data)
+        else:
+            del_file(file_data)
+
+def getfilenames(filepath='',filelist_out=[],file_ext='all'):
+    # 遍历filepath下的所有文件，包括子目录下的文件
+    for fpath, dirs, fs in os.walk(filepath):
+        for f in fs:
+            fi_d = os.path.join(fpath, f)
+            if  file_ext == 'all':
+                filelist_out.append(fi_d)
+            elif os.path.splitext(fi_d)[1] == file_ext:
+                filelist_out.append(fi_d)
+            else:
+                pass
+    return filelist_out
+
+def mergefiles(path, output_filename, import_bookmarks=False):
+    # 遍历目录下的所有pdf将其合并输出到一个pdf文件中，输出的pdf文件默认带书签，书签名为之前的文件名
+    # 默认情况下原始文件的书签不会导入，使用import_bookmarks=True可以将原文件所带的书签也导入到输出的pdf文件中
+    merger = PdfFileMerger()
+    filelist = getfilenames(filepath=path, file_ext='.pdf')
+    if len(filelist) == 0:
+        print("当前目录及子目录下不存在pdf文件")
+        sys.exit()
+    for filename in filelist:
+        f = codecs.open(filename, 'rb')
+        file_rd = PdfFileReader(f)
+        short_filename = os.path.basename(os.path.splitext(filename)[0])
+        if file_rd.isEncrypted == True:
+            print('不支持的加密文件：%s'%(filename))
+            continue
+        merger.append(file_rd, bookmark=short_filename, import_bookmarks=import_bookmarks)
+        print('合并文件：%s'%(filename))
+        f.close()
+    out_filename=os.path.join(os.path.abspath(path), output_filename)
+    merger.write(out_filename)
+    print('合并后的输出文件：%s'%(out_filename))
+    merger.close()
+
+def excetue():
+    # pdf转图片
+    batchPdf2Png(invoicePath, tempImagePath)
+    # 图片插入pptx模板
+    batchInsertPngInSlide(templatePptxPath, tempImagePath)
+    # pptx导出pdf
+    powerpoint = init_powerpoint()
+    absPptxPath = os.path.abspath(tempPptxPath)
+    absOutPath = os.path.abspath(outPath)
+    convert_files_in_folder(powerpoint, absPptxPath, absOutPath)
+    powerpoint.Quit()
+    # 清理临时文件
+    del_file(tempImagePath)
+    del_file(tempPptxPath)
+    # 合并pdf文件
+    mergefiles(outPath, 'All.pdf')
+if __name__ == '__main__':
+    excetue()

requirements.txt

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+python-pptx == 0.6.18
+PyMuPDF == 1.17.0
+comtypes == 1.1.7
+PyPDF2 == 1.26.0