Add command execution using subprocess

src/util/command.py

@@ -0,0 +1,27 @@
+import subprocess
+
+
+def execute(command) -> None:
+    """Execute bash `command`, return the returncode (int)"""
+    command = command.split(' ')
+    subprocess.call(command)
+
+
+def get_output(command) -> str:
+    """Get standard output of `command`"""
+    command = command.split(' ')
+    return subprocess.run(
+        command,
+        stderr=subprocess.STDOUT,
+        stdout=subprocess.PIPE
+    ).stdout.decode('utf-8')
+
+
+def get_return_code(command) -> int:
+    """get return code of `command` (int)"""
+    command = command.split(' ')
+    return subprocess.run(
+        command,
+        stderr=subprocess.STDOUT,
+        stdout=subprocess.PIPE
+    ).returncode