[Python知识库]py遍历文件夹合并pdf文件

?以前写了一个遍历文件夹下所有文件夹中pdf文件并合并成一个的代码

folder=os.listdir(dir_path)  #遍历文件夹
          
#处理                    
def merge_pdf(name,file_all,target_path):
    total=PdfFileWriter()
    totalPages=0
    dc={}
    target_name=name+'.pdf'
    new=os.path.join(target_path,target_name)
    for pdf_file in file_all:                  
        print(pdf_file)            
        #读取pdf文件
        pic=open(pdf_file,'rb')    
        dc[pdf_file]=pic
        input_pdf=PdfFileReader(pic)
        #获取pdf总页数
        pagecount=input_pdf.getNumPages()
        print(pagecount)
        totalPages+=pagecount
        #遍历每个pdf文件
        for iPage in range(pagecount):
            #将每一页合并过去
            total.addPage(input_pdf.getPage(iPage))
        with open(new,'wb') as outputfile:
            total.write(outputfile)
        pic.close()
        os.remove(pdf_file)     
    print(totalPages,'份pdf文件合并中......')
    
    
    
   

#遍历操作，根据需求不要或更改        
for f in folder:
    a,b=(os.path.splitext(f))
    if not b:                                #找到文件夹
        source_path=(os.path.join(dir_path,f))
        name=a
        if os.listdir(source_path)==[]:        #无甚么大用的判断
            continue
        else:
            file_all=[os.path.join(source_path,filename)\
                     for dirpath,folder,files in os.walk(source_path)\
                     for filename in files if filename[-4:]=='.pdf']         #遍历子级文件夹
            print(file_all)
            merge_pdf(name,file_all,target_path)
#             break

print('合并完毕！')