关于input获取文件名的疑问

from PyPDF2 import PdfReader, PdfWrite
def remove_pdf_any_pages(path):
m = input("输入空白页：").split()
pdfReader = PdfReader(open(path, 'rb'))
writer = PdfWriter()
pages = len(pdfReader.pages)
for i in range(pages):
page = pdfReader.pages[i]
if str(i+1) not in m:
writer.add_page(page)
writer.write(open(path, 'wb')
the_floder=input("填写完全文件名："
remove_pdf_any_pages(the_floder)