Dear Tony and Steven: Thank you for your replies and suggestions/advice.
Tony asked about Pkg.status() julia> Pkg.status() 12 required packages: - Atom 0.4.2 - Calculus 0.1.14 - DataFrames 0.7.2 - Distributions 0.8.10 - FastAnonymous 0.3.2 - ForwardDiff 0.1.8 - Jewel 1.0.8 - KernelDensity 0.1.2 - MATLAB 0.2.4 - ProfileView 0.1.2 - PyPlot 2.1.1 - StatsFuns 0.2.1 54 additional packages: - ArrayViews 0.6.4 - BinDeps 0.3.21 - Blink 0.3.4 - Cairo 0.2.31 - CodeTools 0.3.0 - Codecs 0.1.5 - ColorTypes 0.2.2 - Colors 0.6.4 - Compat 0.7.18 - Compose 0.4.2 - Conda 0.2.0 - DataArrays 0.3.0 - DataStructures 0.4.4 - Debug 0.1.6 - Docile 0.5.23 - DualNumbers 0.2.2 - FactCheck 0.4.2 - FileIO 0.0.6 - FixedPointNumbers 0.1.3 - GZip 0.2.18 - Graphics 0.1.3 - Grid 0.4.0 - Gtk 0.9.3 - GtkUtilities 0.0.9 - Hiccup 0.0.2 - HttpCommon 0.2.4 - HttpParser 0.1.1 - HttpServer 0.1.5 - Iterators 0.1.9 - JSON 0.5.0 - JuliaParser 0.6.4 - LNR 0.0.2 - LaTeXStrings 0.1.6 - Lazy 0.10.1 - MacroTools 0.3.0 - MbedTLS 0.2.2 - Measures 0.0.2 - Media 0.1.2 - Mustache 0.0.15 - Mux 0.2.0 - NaNMath 0.2.1 - Nettle 0.2.3 - Optim 0.4.5 - PDMats 0.4.1 - PositiveFactorizations 0.0.1 - PyCall 1.6.1 - Reexport 0.0.3 - Requires 0.2.2 - SHA 0.1.2 - SortingAlgorithms 0.0.6 - StatsBase 0.8.1 - URIParser 0.1.3 - WebSockets 0.1.2 - WoodburyMatrices 0.1.5 Similar to Steven pointing out that "the developers haven't been able to reproduce the problem yet", it caught me by surprise when this problem occurred yesterday. The problem is with julia running on my laptop (the os is xubuntu 14.40). However earlier yesterday, after updating julia on a desktop/workstation (the os is ubuntu 14.04), using PyCall and using PyPlot generated no error responses from julia. Best, Jim On Wednesday, May 18, 2016 at 8:30:03 AM UTC-4, Steven G. Johnson wrote: > > https://github.com/stevengj/PyCall.jl/issues/270 > > A couple of people have seen this; unfortunately, the developers haven't > been able to reproduce the problem yet. >
