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embed.h Python 3.11 config.use_environment=1 + PYTHONPATH test #4119

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Merged
rwgk merged 10 commits into from
Aug 21, 2022
Merged

embed.h Python 3.11 config.use_environment=1 + PYTHONPATH test #4119

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198c9c2
Add debug fprintf to test_interpreter.cpp
rwgk Aug 5, 2022
25ababa
Update `sys.path` from `PYTHONPATH` in Python >= 3.11 branch of `init…
rwgk Aug 5, 2022
a8e0534
Merge branch 'master' into py311_related
rwgk Aug 15, 2022
65aa526
Use `config.isolated = 0; config.use_environment = 1;`
rwgk Aug 18, 2022
379da55
Add `TEST_CASE("PYTHONPATH is used to update sys.path")`
rwgk Aug 19, 2022
eea4e26
Fix clang-tidy error.
rwgk Aug 20, 2022
5e08ab3
Use `_putenv_s()` under Windows.
rwgk Aug 20, 2022
bfbf4b3
Fix clang-tidy error: argument name ... in comment does not match par…
rwgk Aug 20, 2022
e4340b4
Remove slash from PYTHONPATH addition, to work around Windows slash-v…
rwgk Aug 20, 2022
086609c
Use `py::str(...)` instead of `.attr("__str__")` as suggested by @sky…
rwgk Aug 20, 2022
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2 changes: 2 additions & 0 deletions include/pybind11/embed.h
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,8 @@ inline void initialize_interpreter(bool init_signal_handlers = true,
#else
PyConfig config;
PyConfig_InitIsolatedConfig(&config);
config.isolated = 0;
config.use_environment = 1;
config.install_signal_handlers = init_signal_handlers ? 1 : 0;

PyStatus status = PyConfig_SetBytesArgv(&config, argc, const_cast<char *const *>(argv));
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12 changes: 12 additions & 0 deletions tests/test_embed/test_interpreter.cpp
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Expand Up @@ -173,6 +173,18 @@ bool has_pybind11_internals_static() {

TEST_CASE("Restart the interpreter") {
// Verify pre-restart state.
fprintf(stdout,
"\nLOOOK PYTHONPATH %s\n",
py::module_::import("os")

@Skylion007 Skylion007 Aug 19, 2022

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Wouldn't it be cleaner to just use the py::print API here?

@rwgk rwgk Aug 19, 2022

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This is/was just for debugging, I'll remove this before taking this PR out of draft mode, after adding a unit test for PYTHONPATH processing.

I think py::print could do indirections. For debugging I generally try to go straight down to the bare metal.

.attr("environ")
.attr("get")("PYTHONPATH")
.attr("__str__")()
.cast<std::string>()
.c_str());
fflush(stdout);
auto sys_path = py::module_::import("sys").attr("path").attr("__str__")().cast<std::string>();
fprintf(stdout, "\nLOOOK sys.path %s\n", sys_path.c_str());
fflush(stdout);
REQUIRE(py::module_::import("widget_module").attr("add")(1, 2).cast<int>() == 3);
REQUIRE(has_pybind11_internals_builtin());
REQUIRE(has_pybind11_internals_static());
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