arrowprops and Dict()

[PaulSoderlind]

You asked us to report issues...so here is another one: annotate/arrowprops requires an explicit conversion via pydict. Not a big deal, but it differs from PyPlot.

figure()
axis([-4,4,0,0.4])
annotate("there",xy=[0,0.0025],xycoords="data",xytext=[-0.45,0.1], #fails
 textcoords="data",ha="center",va="top",
 arrowprops=Dict("facecolor"=>"black","width"=>0.5,"headwidth"=>7.0))
#annotate("there",xy=[0,0.0025],xycoords="data",xytext=[-0.45,0.1], #works
# textcoords="data",ha="center",va="top",
# arrowprops=pydict(Dict("facecolor"=>"black","width"=>0.5,"headwidth"=>7.0)))

[stevengj]

Looks like a fixable PythonCall limitation: their Dict wrapper doesn't implement a copy() method. That causes this arrowprops = arrowprops.copy() line in Matplotlib to fail with

ERROR: Python: AttributeError: Julia: type Dict has no field copy
Python stacktrace:

[stevengj]

Closed by JuliaPy/PythonCall.jl@a577196