Matplotlib backend not specified by default in Windows machines [Python: Julia: UndefVarError: Core not defined in PythonCall.Compat] #676

julia> using PythonCall

julia> plt=pyimport("matplotlib.pyplot")
Python: <module 'matplotlib.pyplot' from 'C:\\Users\\xxx\\.julia\\environments\\v1.11\\.CondaPkg\\.pixi\\envs\\default\\Lib\\site-packages\\matplotlib\\pyplot.py'>

julia> plt.get_backend()
ERROR: Python: Julia: UndefVarError: `Core` not defined in `PythonCall.Compat`
Hint: It looks like two or more modules export different bindings with this name, resulting in ambiguity. Try explicitly importing it from a particular module, or qualifying the name with the module it should come from.
Hint: a global variable of this name also exists in Core.
Stacktrace:
  [1] (::PythonCall.Compat.var"#1#2")()
    @ PythonCall.Compat C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Compat\gui.jl:162
  [2] pyjlany_call(self::PythonCall.Compat.var"#1#2", args_::Py, kwargs_::Py)
    @ PythonCall.JlWrap C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\JlWrap\any.jl:49 
  [3] _pyjl_callmethod(f::Any, self_::Ptr{PythonCall.C.PyObject}, args_::Ptr{PythonCall.C.PyObject}, nargs::Int64)
    @ PythonCall.JlWrap C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\JlWrap\base.jl:71
  [4] _pyjl_callmethod(o::Ptr{PythonCall.C.PyObject}, args::Ptr{PythonCall.C.PyObject})      
    @ PythonCall.JlWrap.Cjl C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\JlWrap\C.jl:63
  [5] PyObject_CallObject
    @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\C\pointers.jl:300 [inlined]        
  [6] macro expansion
    @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\Py.jl:118 [inlined]
  [7] pycallargs(f::Py)
    @ PythonCall.Core C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:193
  [8] #pycall#21
    @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:217 [inlined]     
  [9] pycall
    @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:203 [inlined]     
 [10] (::Py)()
    @ PythonCall.Core C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\Py.jl:334     
 [11] top-level scope
    @ REPL[3]:1
 [12] eval
    @ .\boot.jl:430 [inlined]
 [13] eval
    @ .\Base.jl:130 [inlined]
 [14] repleval(m::Module, code::Expr, ::String)
    @ VSCodeServer c:\Users\xxx\.vscode\extensions\julialang.language-julia-1.149.2\scripts\packages\VSCodeServer\src\repl.jl:229
 [15] #112
    @ c:\Users\xxx\.vscode\extensions\julialang.language-julia-1.149.2\scripts\packages\VSCodeServer\src\repl.jl:192 [inlined]
 [16] with_logstate(f::VSCodeServer.var"#112#114"{…}, logstate::Base.CoreLogging.LogState)   
    @ Base.CoreLogging .\logging\logging.jl:524
 [17] with_logger
    @ .\logging\logging.jl:635 [inlined]
 [18] (::VSCodeServer.var"#111#113"{Module, Expr, REPL.LineEditREPL, REPL.LineEdit.Prompt})()
    @ VSCodeServer c:\Users\xxx\.vscode\extensions\julialang.language-julia-1.149.2\scripts\packages\VSCodeServer\src\repl.jl:193
 [19] #invokelatest#2
    @ .\essentials.jl:1055 [inlined]
 [20] invokelatest(::Any)
    @ Base .\essentials.jl:1052
 [21] (::VSCodeServer.var"#64#65")()
    @ VSCodeServer c:\Users\xxx\.vscode\extensions\julialang.language-julia-1.149.2\scripts\packages\VSCodeServer\src\eval.jl:34
Python stacktrace:
 [1] __call__
   @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\JlWrap\any.jl:262
 [2] find_module
   @ <string>:9
 [3] _find_spec_legacy
   @ <frozen importlib._bootstrap>:1050
 [4] _find_spec
   @ <frozen importlib._bootstrap>:1076
 [5] _find_and_load_unlocked
   @ <frozen importlib._bootstrap>:1140
 [6] _find_and_load
   @ <frozen importlib._bootstrap>:1178
 [7] _setup_pyqt5plus
   @ C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\backends\qt_compat.py:79
 [8] <module>
   @ C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\backends\qt_compat.py:125
 [9] <module>
   @ C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\backends\backend_qtagg.py:9
 [10] _call_with_frames_removed
   @ <frozen importlib._bootstrap>:241
 [11] exec_module
   @ <frozen importlib._bootstrap_external>:940
 [12] _load_unlocked
   @ <frozen importlib._bootstrap>:690
 [13] _find_and_load_unlocked
   @ <frozen importlib._bootstrap>:1149
 [14] _find_and_load
   @ <frozen importlib._bootstrap>:1178
 [15] _gcd_import
   @ <frozen importlib._bootstrap>:1206
 [16] import_module
   @ importlib C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\importlib\__init__.py:126
 [17] load_backend_module
   @ matplotlib.backends.registry C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\backends\registry.py:323
 [18] switch_backend
   @ matplotlib.pyplot C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\pyplot.py:415
 [19] switch_backend
   @ matplotlib.pyplot C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\pyplot.py:400
 [20] __getitem__
   @ matplotlib C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\__init__.py:764
 [21] get_backend
   @ matplotlib C:\Users\xxx\.julia\environments\v1.11\.CondaPkg\.pixi\envs\default\Lib\site-packages\matplotlib\__init__.py:1281
Stacktrace:
 [1] pythrow()
   @ PythonCall.Core C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\err.jl:77      
 [2] errcheck
   @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\err.jl:10 [inlined]
 [3] pycallargs(f::Py)
   @ PythonCall.Core C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:193
 [4] #pycall#21
   @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:217 [inlined]      
 [5] pycall
   @ C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\builtins.jl:203 [inlined]      
 [6] (::Py)()
   @ PythonCall.Core C:\Users\xxx\.julia\packages\PythonCall\mkWc2\src\Core\Py.jl:334      
 [7] top-level scope
   @ REPL[3]:1
Some type information was truncated. Use `show(err)` to see complete types.