PyCall.PyError

Hello, I try to use PyCall but I have the same error every times. I use Julia 1.4 with Atom (Juno). Here one of the code I try to use :

`ENV["PYTHON"] = ""
#Pkg.update()
#Pkg.build("PyCall")
using LaTeXStrings
using PyPlot
using DelimitedFiles

rc("text",usetex="True")
rc("font",family="serif",size=20)

npoints = 100;
x = range(0; stop=2*pi, length=npoints)
function f(x)
return sin(3 * x^0.5) / (2 + cos(2 * x))
end

y = f.(x);

cd("/Users/adrienwafflard/Documents/ULg/OQ/julia")
open("out.txt", "w") do io
writedlm(io, [x y])
end

figure(figsize=(8,6));

plot(x, y, color="red", linewidth=2.0, linestyle="--")

xlabel(L"$x$")
ylabel(L"$y(x)$")
title(L"Graph of $y(x)=\sin\left(\frac{3\sqrt{x}}{2+\cos(2x)}\right)$")

text(0.9, 0.32, "Max")
tight_layout()
cd("/mydir")
savefig("./plot.pdf")
close()

rc("font",family="serif",size=12)

figarr, axarr = subplots(2, 2)
figarr.suptitle("Many plots")
figarr.subplots_adjust(hspace=0.5, wspace=0.5)
axarr[1, 1].plot(x, y)
# preserve aspect ratio for linear-linear plots
axarr[1, 1].axis("equal")
axarr[1, 1].set(title="Plot [1,1]", xlabel=L"$x$")
axarr[1, 2].scatter(x, y)
axarr[1, 2].set_title("Plot [1,2]")
axarr[1, 2].set(ylabel=L"$y$")
axarr[2, 1].plot(x, y, color="#663300")
axarr[2, 1].set_title("Plot [2,1]")
# Hide x labels and tick labels
axarr[2, 1].label_outer()
axarr[2, 2].scatter(x, y, color="#663300", alpha=0.2)
axarr[2, 2].set_title("Plot [2,2]")

tight_layout()
savefig("./panels.pdf")
close("all")`

and the error:

`LoadError: PyCall.PyError("\$(Expr(:escape, :(ccall(#= /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:43 =# @pysym(:PyObject_Call), PyPtr, (Py
Ptr, PyPtr, PyPtr), o, pyargsptr, kw))))", PyCall.PyObject(Ptr{PyCall.PyObject_struct} @0x00000001481b6408), PyCall.PyObject(Ptr{PyCall.PyObject_struct} @0x000000015f2b5cb0), PyCall.PyObject(Ptr{PyCall.PyObject_struct} @0x000000015f2eb9b0))
Stacktrace:
[1] pyerr_check at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/exception.jl:60 [inlined]
[2] pyerr_check at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/exception.jl:64 [inlined]
[3] _handle_error(::String) at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/exception.jl:81
[4] macro expansion at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/exception.jl:95 [inlined]
[5] #110 at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:43 [inlined]
[6] disable_sigint at ./c.jl:446 [inlined]
[7] __pycall! at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:42 [inlined]
[8] _pycall!(::PyCall.PyObject, ::PyCall.PyObject, ::Tuple{}, ::Int64, ::Ptr{Nothing}) at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:29
[9] _pycall! at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:11 [inlined]
[10] #pycall#116 at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:83 [inlined]
[11] pycall at /Users/adrienwafflard/.julia/packages/PyCall/zqDXB/src/pyfncall.jl:83 [inlined]
[12] tight_layout(; kws::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at /Users/adrienwafflard/.julia/packages/PyPlot/4wzW1/src/PyPlot.jl:177
[13] tight_layout() at /Users/adrienwafflard/.julia/packages/PyPlot/4wzW1/src/PyPlot.jl:174
[14] top-level scope at /Users/adrienwafflard/Downloads/Plot_scripts_example.jl:33
in expression starting at /Users/adrienwafflard/Downloads/Plot_scripts_example.jl:33`

I tried other examples but I have the same error.

I also have Python 3.3.7. I use macOS X 15.4 but I have the same problem on my PC (windows 10). Finally I have those packages installed :
`(@v1.4) pkg> status
Status `~/.julia/environments/v1.4/Project.toml`
[c52e3926] Atom v0.12.10
[8f4d0f93] Conda v1.4.1
[e5e0dc1b] Juno v0.8.1
[b964fa9f] LaTeXStrings v1.1.0
[91a5bcdd] Plots v0.29.9
[438e738f] PyCall v1.91.4
[d330b81b] PyPlot v2.8.2
[6e0679c1] QuantumOptics v0.7.1
[8bb1440f] DelimitedFiles`

Thank you for your help.