在 python 中打印后如何关闭 pdf 文件？

Question

I am wondering how to close a pdf file once it has printed. I am using subprocess.popen to print the file but I need to physically close the acrobat application before it can go to the next file (as i believe the subprocess doesn't recognise that the process has already completed and is waiting for the user to close the application). I am running through a loop calling main when a file is found. See below.

def main(pdffile, printer_name):

# Set the command prompt code
cmd = '"{}" /N /T "{}" "{}"'.format(acrobat, pdffile, printer_name)
# print(cmd)

# Printing the pdf and waiting for process to finish before continuing with the rest of the script
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
proc.communicate('None')[0]
        
# Get File Name
filename = (os.path.basename(pdffile))
destination_folder = f'{destination_labels}' + filename
# print(destination_folder)

# Move file once printed
shutil.move(pdffile,destination_folder)

Any help is appreciated.

Answer 1

Rather than using subprocess , I would recommend you to use the default open() and close() functions. Here's a sample code:

from PyPDF2 import PDFFileReader
with open('document_path.PDF','rb') as file: #Automatically closes file when exited.
    pdf_file = PDFFileReader(file)
    first_page = pdf_file.getPage(0) # Get Page 1
    print(first_page.extractText())

To install PyPDF2 simply run pip install pypdf2 in cmd .

Answer 2

For anyone wondering, the loop hole I used was os.startfile(acrobat) , which pre launched the adobe application. This meant that when I opened a new instance of adobe using subprocess.popen , once the file printed it would recognise the file as be completed and carry on with the rest of the script.