Help to use a local package that contains a Julia function that uses a Python package

[martinmestre]

Hello, I use PythonCall a lot. Thanks! Recently I started building my first package but bumped into this problem . Could you tell me if I am interpreting something wrongly? Below I give a MWE. Thanks.

module Cats

    using PythonCall

    @py import astropy.constants as cons

    export myfoo

    function myfoo()
        g = cons.G
        return g
    end

end

Below the REPL log:

(@v1.9) pkg> activate .
  Activating project at `~/.julia/dev/Cats`

julia> using Cats
[ Info: Precompiling Cats [3f873cc4-696d-4df5-850d-2788ce7dad7b]

julia> myfoo
myfoo (generic function with 1 method)

julia> myfoo()

[941469] signal (11.1): Segmentation fault
in expression starting at REPL[4]:1
PyObject_GetAttr at /usr/local/src/conda/python-3.10.8/Objects/object.c:922
PyObject_GetAttr at /home/mmestre/.julia/packages/PythonCall/dsECZ/src/cpython/pointers.jl:299 [inlined]
macro expansion at /home/mmestre/.julia/packages/PythonCall/dsECZ/src/Py.jl:131 [inlined]
pygetattr at /home/mmestre/.julia/packages/PythonCall/dsECZ/src/abstract/object.jl:60
getproperty at /home/mmestre/.julia/packages/PythonCall/dsECZ/src/Py.jl:272
unknown function (ip: 0x7f205c9be5c6)
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
myfoo at /home/mmestre/.julia/dev/Cats/src/Cats.jl:10
unknown function (ip: 0x7f205c9be51f)
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
jl_apply at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/julia.h:1879 [inlined]
do_call at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/interpreter.c:126
eval_value at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/interpreter.c:226
eval_stmt_value at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/interpreter.c:177 [inlined]
eval_body at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/interpreter.c:624
jl_interpret_toplevel_thunk at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/interpreter.c:762
jl_toplevel_eval_flex at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/toplevel.c:912
jl_toplevel_eval_flex at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/toplevel.c:856
jl_toplevel_eval_flex at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/toplevel.c:856
jl_toplevel_eval_flex at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/toplevel.c:856
ijl_toplevel_eval_in at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/toplevel.c:971
eval at ./boot.jl:370 [inlined]
eval_user_input at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:153
repl_backend_loop at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:249
#start_repl_backend#46 at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:234
start_repl_backend at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:231
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
#run_repl#59 at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:379
run_repl at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:365
jfptr_run_repl_60276.clone_1 at /home/mmestre/.julia/juliaup/julia-1.9.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
#1017 at ./client.jl:421
jfptr_YY.1017_32248.clone_1 at /home/mmestre/.julia/juliaup/julia-1.9.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
jl_apply at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/julia.h:1879 [inlined]
jl_f__call_latest at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/builtins.c:774
#invokelatest#2 at ./essentials.jl:816 [inlined]
invokelatest at ./essentials.jl:813 [inlined]
run_main_repl at ./client.jl:405
exec_options at ./client.jl:322
_start at ./client.jl:522
jfptr__start_37386.clone_1 at /home/mmestre/.julia/juliaup/julia-1.9.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2758 [inlined]
ijl_apply_generic at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/gf.c:2940
jl_apply at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/julia.h:1879 [inlined]
true_main at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/jlapi.c:573
jl_repl_entrypoint at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/src/jlapi.c:717
main at /cache/build/default-amdci4-0/julialang/julia-release-1-dot-9/cli/loader_exe.c:59
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x401098)
Allocations: 1902754 (Pool: 1899088; Big: 3666); GC: 3
Segmentation fault

The same happens if I use another Python packages, like numpy instead of astropy. Thanks

[cjdoris]

See https://cjdoris.github.io/PythonCall.jl/stable/pythoncall/#Writing-packages-which-depend-on-PythonCall

[github-actions[bot]]

This issue has been marked as stale because it has been open for 60 days with no activity. If the issue is still relevant then please leave a comment, or else it will be closed in 7 days.

[martinmestre]

Thanks, it worked, problem solved!