Python 快速合并PDF表格转换输出CSV文件

import sys,os
import datetime as dt
import PyPDF2,pdfplumber
import easygui as eg
def 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 += tt
    return text
def 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.close
        print("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:
                pass
            if 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")