AttributeError: 'NoneType' object has no attribute 'f_locals'

[albertomercurio]

MWE:

using PythonCall

sym = pyimport("sympy")

a = sym.Symbol("a", positive=true)
sym.lambdify(a, a)

Python: AttributeError: 'NoneType' object has no attribute 'f_locals'

Stacktrace:
 [1] pythrow()
   @ PythonCall.Core [~/.julia/packages/PythonCall/bb3ax/src/Core/err.jl:92](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/err.jl:92)
 [2] errcheck
   @ [~/.julia/packages/PythonCall/bb3ax/src/Core/err.jl:10](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/err.jl:10) [inlined]
 [3] pycallargs(f::Py, args::Py)
   @ PythonCall.Core [~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:212](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:212)
 [4] pycall(::Py, ::Py, ::Vararg{Py}; kwargs::@Kwargs{})
   @ PythonCall.Core [~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:230](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:230)
 [5] pycall(::Py, ::Py, ::Vararg{Py})
   @ PythonCall.Core [~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:220](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/builtins.jl:220)
 [6] (::Py)(::Py, ::Vararg{Py}; kwargs::@Kwargs{})
   @ PythonCall.Core [~/.julia/packages/PythonCall/bb3ax/src/Core/Py.jl:339](https://file+.vscode-resource.vscode-cdn.net/home/alberto/GitHub/PhD-Thesis-Notebooks/~/.julia/packages/PythonCall/bb3ax/src/Core/Py.jl:339)
 [7] top-level scope
   @ In[8]:5

[albertomercurio]

Sorry, wrong repository.