intial version

.gitignore

@@ -99,3 +99,7 @@ ENV/
 
 # mypy
 .mypy_cache/
+
+# pydev
+.project
+.pydevproject

common_helper_process/__init__.py

+from .fail_safe_subprocess import execute_shell_command
+
+__all__ = [
+    'execute_shell_command',
+]

common_helper_process/fail_safe_subprocess.py

+from subprocess import Popen, PIPE, STDOUT
+
+
+def execute_shell_command(shell_command):
+    """
+    Execute a shell command and return STDOUT and STDERR in one combined result string.
+    This function shall not raise any errors
+
+    :param shell_command: command to execute
+    :type shell_command: str
+    :return: str
+    """
+    output = ""
+    with Popen(shell_command, shell=True, stdout=PIPE, stderr=STDOUT) as pl:
+        output = pl.communicate()[0].decode('utf-8', errors='replace')
+    return output

setup.py

+from setuptools import setup, find_packages
+
+VERSION = 0.1
+
+setup(
+    name="common_helper_process",
+    version=VERSION,
+    packages=find_packages(),
+    description="Helper functions for handling processes.",
+    author="Fraunhofer FKIE",
+    author_email="peter.weidenbach@fkie.fraunhofer.de",
+    url="http://www.fkie.fraunhofer.de",
+    license="GPL-3.0"
+)

test/test_fail_safe_subprocess.py

+import unittest
+
+from common_helper_process import execute_shell_command
+
+
+class Test(unittest.TestCase):
+
+    def test_execute_shell_command(self):
+        result = execute_shell_command("echo 'test 123'")
+        self.assertEqual(result, 'test 123\n', 'result not correct')
+
+    def test_execute_shell_command_error(self):
+        result = execute_shell_command("echo 'test 123' 1>&2 && exit 2")
+        self.assertEqual(result, 'test 123\n', 'result not correct')