julia> using SymbolicControlSystems
[ Info: Precompiling SymbolicControlSystems [886cb795-8fd3-4b11-92f6-8071e46f71c5]
[ Info: Skipping precompilation since __precompile__(false). Importing SymbolicControlSystems [886cb795-8fd3-4b11-92f6-8071e46f71c5].
ERROR: LoadError: InitError: KeyError: key :pi not found
Stacktrace:
[1] __getproperty
@ ~/.julia/packages/PyCall/ilqDX/src/PyCall.jl:313 [inlined]
[2] getproperty
@ ~/.julia/packages/PyCall/ilqDX/src/PyCall.jl:318 [inlined]
[3] __init__()
@ SymPy ~/.julia/packages/SymPy/vpIrQ/src/SymPy.jl:131
[4] register_restored_modules(sv::Core.SimpleVector, pkg::Base.PkgId, path::String)
@ Base ./loading.jl:1115
[5] _include_from_serialized(pkg::Base.PkgId, path::String, ocachepath::String, depmods::Vector{Any})
@ Base ./loading.jl:1061
[6] _require_search_from_serialized(pkg::Base.PkgId, sourcepath::String, build_id::UInt128)
@ Base ./loading.jl:1506
[7] _require(pkg::Base.PkgId, env::String)
@ Base ./loading.jl:1783
[8] _require_prelocked(uuidkey::Base.PkgId, env::String)
@ Base ./loading.jl:1660
[9] macro expansion
@ ./loading.jl:1648 [inlined]
[10] macro expansion
@ ./lock.jl:267 [inlined]
[11] require(into::Module, mod::Symbol)
@ Base ./loading.jl:1611
[12] include
@ ./Base.jl:457 [inlined]
[13] _require(pkg::Base.PkgId, env::String)
@ Base ./loading.jl:1840
[14] _require_prelocked(uuidkey::Base.PkgId, env::String)
@ Base ./loading.jl:1660
[15] macro expansion
@ ./loading.jl:1648 [inlined]
[16] macro expansion
@ ./lock.jl:267 [inlined]
[17] require(into::Module, mod::Symbol)
@ Base ./loading.jl:1611
during initialization of module SymPy
in expression starting at /home/ufechner/.julia/packages/SymbolicControlSystems/wPScY/src/SymbolicControlSystems.jl:2
