InputFile: Fix proper naming of file when reading from subprocess.PIPE (#1079)

telegram/files/inputfile.py

@@ -70,7 +70,9 @@ class InputFile(object):
             self.input_file_content = self.input_file.read()
             if 'filename' in data:
                 self.filename = self.data.pop('filename')
-            elif hasattr(self.input_file, 'name'):
+            elif (hasattr(self.input_file, 'name') and
+                  not isinstance(self.input_file.name, int) and  # py3
+                  self.input_file.name != '<fdopen>'):  # py2
                 # on py2.7, pylint fails to understand this properly
                 # pylint: disable=E1101
                 self.filename = os.path.basename(self.input_file.name)

tests/test_inputfile.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# A library that provides a Python interface to the Telegram Bot API
+# Copyright (C) 2015-2018
+# Leandro Toledo de Souza <devs@python-telegram-bot.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser Public License for more details.
+#
+# You should have received a copy of the GNU Lesser Public License
+# along with this program.  If not, see [http://www.gnu.org/licenses/].
+import os
+import subprocess
+import sys
+
+from telegram import InputFile
+
+
+class TestInputFile(object):
+    png = os.path.join('tests', 'data', 'game.png')
+
+    def test_subprocess_pipe(self):
+        if sys.platform == 'win32':
+            cmd = ['type', self.png]
+        else:
+            cmd = ['cat', self.png]
+
+        proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=(sys.platform == 'win32'))
+        in_file = InputFile({'photo': proc.stdout})
+
+        assert in_file.input_file_content == open(self.png, 'rb').read()
+        assert in_file.mimetype == 'image/png'
+        assert in_file.filename == 'image.png'
+
+        proc.kill()