Python 快速合并PDF表格转换输出CSV文件-编程知识

单位的刷脸考勤机后台系统做得比较差，只能导出每个部门的出勤统计表pdf，格式如下：

近期领导要看所有部门的考勤数据，于是动手快速写了个合并pdf并输出csv文件的脚本。

安装模块

pypdf2，pdfplumber，前者用于合并，后者用于读表格。

C:\>pip install pypdf2
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting pypdf2
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/8e/5e/c86a5643653825d3c913719e788e41386bee415c2b87b4f955432f2de6b2/pypdf2-3.0.1-py3-none-any.whl (232 kB)
Installing collected packages: pypdf2
Successfully installed pypdf2-3.0.1

C:\>pip install pdfplumber
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting pdfplumber
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/f8/d3/f58c2d5d86a585e438c6708f568eca79e7c4e6ee3d5210cf8b31d38cb021/pdfplumber-0.10.3-py3-none-any.whl (48 kB)
Requirement already satisfied: pdfminer.six==20221105 in d:\program files\python\lib\site-packages (from pdfplumber) (20221105)
Requirement already satisfied: Pillow>=9.1 in d:\program files\python\lib\site-packages (from pdfplumber) (10.2.0)
Requirement already satisfied: pypdfium2>=4.18.0 in d:\program files\python\lib\site-packages (from pdfplumber) (4.25.0)
Requirement already satisfied: charset-normalizer>=2.0.0 in d:\program files\python\lib\site-packages (from pdfminer.six==20221105->pdfplumber) (3.3.2)
Requirement already satisfied: cryptography>=36.0.0 in d:\program files\python\lib\site-packages (from pdfminer.six==20221105->pdfplumber) (41.0.7)
Requirement already satisfied: cffi>=1.12 in d:\program files\python\lib\site-packages (from cryptography>=36.0.0->pdfminer.six==20221105->pdfplumber) (1.16.0)
Requirement already satisfied: pycparser in d:\program files\python\lib\site-packages (from cffi>=1.12->cryptography>=36.0.0->pdfminer.six==20221105->pdfplumber) (2.21)
Installing collected packages: pdfplumber
Successfully installed pdfplumber-0.10.3

读取、合并文件

PyPDF2

读取和合并pdf文件正好以前写过，主要代码如下：

with codecs.open(file_path, 'rb', encoding='utf-16') as file:
pdf_reader = PyPDF2.PdfReader(file)
text = ''
for page_num in range(len(pdf_reader.pages)):
tt = pdf_reader.pages[page_num].extract_text()
print(tt)
text += tt
......

pdfMerge = PyPDF2.PdfMerger()
try:
for pdf in pdfLists:
pdfMerge.append(pdf, import_outline=False)
pdfMerge.write(pdfFileN)
pdfMerge.close
print("PDF files merged successfully!")

......

表格读取

pdfplumber

读取代码如下：

pdf = pdfplumber.open(pdfFileN)
for page in pdf.pages:
tables = page.extract_tables(table_settings = {})
for table in tables:
print(table)

遍历得到的是一个个二维列表，可以根据需要自己清洗数据。

程序界面

easygui

就用这个库，弄2个对话框简单了事：

更多easygui内容请见：

Python 简易图形界面库easygui 对话框大全-CSDN博客文章浏览阅读4.2k次，点赞117次，收藏96次。提供了“继续”和“取消”选项，并返回True（表示继续）或False（表示取消）。", title="结束", ok_button="干得好！easygui.ccbox(msg, title, choices=('退出[E]','取消[C]'))选择“Chocolate”后点OK就把所选择的项赋值给变量choice，点Cancel则返回None。如果选择了第一个按钮，则返回“True”。提供了Yes和No的选择，并返回“True”或“False”。在列表框中提供了可供选择的由元组或列表指定的选项列表。https://blog.csdn.net/boysoft2002/article/details/135179267Python 简易图形界面库easygui 对话框大全(续)-CSDN博客文章浏览阅读1.2k次，点赞67次，收藏58次。Python 简易图形界面库easygui 对话框大全-CSDN博客提供了“继续”和“取消”选项，并返回True（表示继续）或False（表示取消）。", title="结束", ok_button="干得好！easygui.ccbox(msg, title, choices=('退出[E]','取消[C]'))选择“Chocolate”后点OK就把所选择的项赋值给变量choice，点Cancel则返回None。如果选择了第一个按钮，则返回“True”。https://blog.csdn.net/boysoft2002/article/details/135297373几样拼凑在一起，完成合并和转换pdf表格，完整代码如下：

import sys,os
import datetime as dt
import PyPDF2,pdfplumber
import easygui as egdef get_pdf_text(file_path):with codecs.open(file_path, 'rb', encoding='utf-16') as file:pdf_reader = PyPDF2.PdfReader(file)text = ''for page_num in range(len(pdf_reader.pages)):tt = pdf_reader.pages[page_num].extract_text()print(tt)text += ttreturn textdef strDateTime(diff=0):now = dt.datetime.now()future_time = now + dt.timedelta(days=diff)    return f'{future_time.year:04}{future_time.month:02}{future_time.day:02}_{future_time.hour:02}{future_time.minute:02}{future_time.second:02}'txtStart = "PDFmerged_"
try:Dir = eg.diropenbox(msg=None, title=None, default='./')pdfLists = [f for f in os.listdir(Dir) if f.endswith('.pdf') and not f.startswith(txtStart)]pdfFileN = Dir + '\\' + txtStart + strDateTime() + ".pdf"
except:print('取消退出！')sys.exit(0)if len(pdfLists)==0:eg.msgbox("此文件夹没有Pdf文件！", title="结束", ok_button="Fail")sys.exit(0)
else:pdfMerge = PyPDF2.PdfMerger()try:for pdf in pdfLists:pdfMerge.append(pdf, import_outline=False)pdfMerge.write(pdfFileN)pdfMerge.closeprint("PDF files merged successfully!")except:eg.msgbox("合并pdf失败！", title="结束", ok_button="Fail")sys.exit(0)pdf =  pdfplumber.open(pdfFileN)
dct = dict()
for page in pdf.pages:tables = page.extract_tables(table_settings = {})for table in tables:for lst in table:tmp = lst[1:]tmp = [tmp[0]]+tmp[3:8]+[tmp[-1]]try:tmp[0] = tmp[0].replace('\n','')tmp[0] = tmp[0].split('/')tmp[0] = tmp[0][-1]except:passif lst[0]=='时间':dct[lst[0]] = tmp[0]else:dct[','.join([lst[0],tmp[0] if tmp[0] else ''])] = ','.join(tmp[1:]) if all(tmp[1:]) else ''
pdf.close()
try:os.remove(pdfFileN)
except:pass
try:fn = "考勤表(" + dct['时间'] + ")"+strDateTime()+".csv"
except:fn = "考勤表"+strDateTime()+".csv"
try:with open(fn, 'w') as f:for k,v in dct.items():print(','.join([k,v]), file=f)eg.msgbox(f"考勤表保存成功！\n\n\n\t文件名：{fn}", title="结束", ok_button="Good！")print(f"CSV file written successfully! by HannYang {strDateTime()}")
except:eg.msgbox("保存csv文件失败！", title="结束", ok_button="Fail")

后话

如要直接输出Excel表格，则另要安装和导入xlwt模块。大致代码如下：

myxl = xlwt.Workbook()
style = xlwt.easyxf('align: wrap yes; align: horiz center; font: bold yes;borders:top thin; borders:bottom thin; borders:left thin; borders:right thin;')
sheet = myxl.add_sheet('考勤表')
wcol = [20,40,50,75,40,75]
for i in range(6):
sheet.col(i).width = wcol[i]*80
sheet.write_merge(0,0,0,8,'出勤统计报表',style)
style = xlwt.easyxf('borders:top thin; borders:bottom thin; borders:left thin; borders:right thin;')
sheet.write_merge(1,1,0,1,'单位（盖章）：',style)
sheet.write_merge(2,2,0,1,'*经办人：',style)
sheet.write(1,3,'填表日期：',style)
sheet.write_merge(1,1,4,8,strToday(),style)
sheet.write(2,3,'*联系电话：',style)
sheet.write(2,2,adminName,style)
sheet.write_merge(2,2,4,8,adminMobil,style)
for i,t in enumerate(head.strip().split(',')):
sheet.write(3,i,t,style)
with open('考勤表.csv', 'r') as f:
for i,row in enumerate(csv.reader(f)):
if i==0:continue
for j,col in enumerate(row):
sheet.write(3+i,j,col,style)
excelfile = 'Output_'+strDateTime()+'('+defaultValue+').xls'
myxl.save(excelfile)

另外不赶时间的话，可以用PySimpleGUI库写个带漂亮gui界面的程序，具体参见：

探索PySimpleGUI：一款简洁易用的图形用户界面库-CSDN博客文章浏览阅读1.9k次，点赞105次，收藏88次。PySimpleGUI是一个基于Tkinter、WxPython、Qt等底层库构建的图形界面框架，其设计目标是使Python GUI编程变得更加简单直观，大大降低了入门门槛。无论是初学者还是经验丰富的开发者，都可以快速上手并高效地创建出功能丰富、外观现代的桌面应用程序。PySimpleGUI的核心优势在于其高度抽象化的API设计，它提供了包括按钮、输入框、列表框、滑块等各种常见的GUI元素。除了基本的布局和样式设置，PySimpleGUI还支持事件驱动的编程模型。https://blog.csdn.net/boysoft2002/article/details/135315323

完。