action='extend'

gprofiler/gprofiler_types.py

@@ -89,12 +89,12 @@ def nonnegative_integer(value_str: str) -> int:
 
 def integers_list(value_str: str) -> List[int]:
     try:
-        pids = [int(pid) for pid in value_str.split(",")]
+        values = [int(value) for value in value_str.split(",")]
     except ValueError:
         raise configargparse.ArgumentTypeError(
             "Integer list should be a single integer, or comma separated list of integers f.e. 13,452,2388"
         )
-    return pids
+    return values
 
 
 def integer_range(min_range: int, max_range: int) -> Callable[[str], int]:

gprofiler/profilers/python.py

@@ -21,6 +21,7 @@
 from subprocess import CompletedProcess
 from typing import Any, Dict, List, Match, Optional, cast
 
+from gprofiler_types import integers_list
 from granulate_utils.linux.elf import get_elf_id
 from granulate_utils.linux.ns import get_process_nspid, run_in_ns
 from granulate_utils.linux.process import (
@@ -345,8 +346,9 @@ def _should_skip_process(self, process: Process) -> bool:
         ProfilerArgument(
             name="--python-pyspy-processes",
             dest="python_pyspy_processes",
-            nargs="+",
-            type=int,
+            action="extend",
+            default=[],
+            type=integers_list,
             help="List of processes (by PID) to profile with py-spy."
             " This option forces gProfiler to profile given processes with py-spy, even if"
             " they are not recognized by gProfiler as Python processes."