profila occasionally fails with message that is none

README.md

@@ -89,6 +89,7 @@ for i in range(100):
 ```
 
 ### Command-line profiling
+
 If you usually run your script like this:
 
 ```bash
@@ -101,6 +102,18 @@ Instead run it like this:
 $ python -m profila annotate -- yourscript.py --arg1=200
 ```
 
+If you usually run your script like this, with `-m`:
+
+```bash
+$ python -m yourpackage --arg1=200
+```
+
+Instead run it like this:
+
+```bash
+$ python -m profila annotate -- -m yourpackage --arg1=200
+```
+
 **Sampling is done every 10 milliseconds, so you need to make sure your Numba code runs for a sufficiently long time.**
 For example, you can run your function in a loop until a number of seconds has passed:
 
@@ -148,6 +161,7 @@ Instruction-level parallelism, branch mispredictions, SIMD, and the CPU memory c
 Bug fixes:
 
 * Work on newer versions of Linux, like Ubuntu 24.04 and RHEL 9, in the face of issues with newer gdb.
+* Fixed occasional error `TypeError: argument of type 'NoneType' is not iterable`.
 
 ### v0.2.1
 

scripts_for_tests/simple.py

@@ -1,10 +1,10 @@
 import numpy as np
-from numba import njit
+from numba import jit
 
 DATA = np.random.random((1_000_000,))
 
 
-@njit
+@jit
 def simple(timeseries):
     result = np.empty_like(timeseries)
     for i in range(len(timeseries)):

src/profila/_gdb.py

@@ -52,7 +52,7 @@ async def _sample(process: Process) -> AsyncIterable[Optional[list[Frame]]]:
 
         process.stdin.write(b"-stack-list-frames --no-frame-filters 0 10\n")
         message = await _read_until_done(process)
-        if "stack" not in message["payload"]:  # type: ignore
+        if message["payload"] is None or "stack" not in message["payload"]:  # type: ignore
             # Bad read of some sort:
             yield None
         else: