CODEWITHSUNDEEP
pythonpython-3.xpdfprintinglpr
Hoffmania
Hoffmania

Reputation: 45

Print PDF from web without saving to filesystem first

In Python3.4 I am using the following code to print a PDF from a website using the requests library:

with open(temp_pdf_file, 'wb') as handle:
   response = requests.get(html.unescape(message['body']), stream=True)
   for block in response.iter_content(1024):
       handle.write(block)
cmd = '/usr/bin/lpr -P {} {}'.format(self.printer_name,temp_pdf_file)
print(cmd)
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
stdout, stderr = proc.communicate()
exit_code = proc.wait()

Is there a way to skip the temporary file save and stream directly the printer directly?

Upvotes: 1

Views: 534

Answers (1)

Brecht Machiels
Brecht Machiels

Reputation: 3410

You can have the subprocess read its input from stdin and write to the stdin "file" directly.

import requests
from subprocess import Popen, PIPE

message = ...

cmd = '/usr/bin/lpr -P {}'.format(self.printer_name)
proc = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE, shell=True)
response = requests.get(html.unescape(message['body']), stream=True)
for block in response.iter_content(1024):
    proc.stdin.write(block)
stdout, stderr = proc.communicate()
exit_code = proc.wait()
print exit_code

Upvotes: 2

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