Seems like UCS-2 strings are in use by some (maybe all?) pre-built Python binaries (tested on mcr.microsoft.com/devcontainers/rust:1-1-bullseye Dev Container, our company's CentOS environment, as well as my local environment with Python 3.7 and 3.11 versions installed using pyenv).
If there's a function with a UCS-2 encoded name on the first recorded stack trace, py-spy just fails.
Example
```py
import time
def кириллица(seconds):
time.sleep(seconds)
if __name__ == "__main__":
кириллица(10)
```
Outputs (`profile.svg` will not be created in this case):
```sh
$ py-spy record -o profile.svg -- python3 tests/scripts/cyrillic.py
Error: Failed to find a python interpreter in the .data section
```
If py-spy successfully started the recorder, we'll get a flamegraph built without stack traces with UCS-2 strings, so final data/graph will look strange or even misleading.
Example
```py
import time
def function1(seconds):
time.sleep(seconds)
def кириллица(seconds):
time.sleep(seconds)
if __name__ == "__main__":
function1(10)
кириллица(10)
```
Outputs (`profile.svg` will be created):
```sh
$ py-spy record -o profile.svg -- python3 tests/scripts/cyrillic.py
py-spy> Sampling process 100 times a second. Press Control-C to exit.
py-spy> Stopped sampling because process exited
py-spy> Wrote flamegraph data to 'profile.svg'. Samples: 12 Errors: 1025
```
Trying to fix an issue, when py-spy would not parse a stack trace containing functions with cyrillic names.
https://github.com/benfred/py-spy/blob/4a11c44849aa2146634ceef8ee8eb43bc1e969ad/src/python_data_access.rs#L26-L31
Seems like UCS-2 strings are in use by some (maybe all?) pre-built Python binaries (tested on
mcr.microsoft.com/devcontainers/rust:1-1-bullseyeDev Container, our company's CentOS environment, as well as my local environment with Python 3.7 and 3.11 versions installed using pyenv).If there's a function with a UCS-2 encoded name on the first recorded stack trace, py-spy just fails.
Example
```py import time def кириллица(seconds): time.sleep(seconds) if __name__ == "__main__": кириллица(10) ``` Outputs (`profile.svg` will not be created in this case): ```sh $ py-spy record -o profile.svg -- python3 tests/scripts/cyrillic.py Error: Failed to find a python interpreter in the .data section ```If py-spy successfully started the recorder, we'll get a flamegraph built without stack traces with UCS-2 strings, so final data/graph will look strange or even misleading.
Example
```py import time def function1(seconds): time.sleep(seconds) def кириллица(seconds): time.sleep(seconds) if __name__ == "__main__": function1(10) кириллица(10) ``` Outputs (`profile.svg` will be created): ```sh $ py-spy record -o profile.svg -- python3 tests/scripts/cyrillic.py py-spy> Sampling process 100 times a second. Press Control-C to exit. py-spy> Stopped sampling because process exited py-spy> Wrote flamegraph data to 'profile.svg'. Samples: 12 Errors: 1025 ```