Hi everyone,
I am getting some cryptic errors when I try to load PyPlot. It seems to be
a problem on the Python end, but I'm not sure. I tried to use the "Conda"
package so that Julia would have its own (hopefully not-broken) copy of
Python, but that didn't help as PyPlot is still looking at the system-wide
install of Python. Here are the messages in full (and some comments after
ward). I decided to start from a completely clean install of Julia 0.5 (no
packages) to make sure that there was no problem there:
-----------------------------------
$ mv ~/.julia/v0.5 ~/.julia/old-v0.5
$ julia
_
_ _ _(_)_ | A fresh approach to technical computing
(_) | (_) (_) | Documentation: http://docs.julialang.org
_ _ _| |_ __ _ | Type "?help" for help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 0.5.0 (2016-09-19 18:14 UTC)
_/ |\__'_|_|_|\__'_| | Official http://julialang.org/ release
|__/ | x86_64-pc-linux-gnu
julia> Pkg.add("Conda")
INFO: Initializing package repository /home/daniel/.julia/v0.5
INFO: Cloning METADATA from https://github.com/JuliaLang/METADATA.jl
INFO: Installing BinDeps v0.4.5
INFO: Installing Compat v0.9.3
INFO: Installing Conda v0.3.2
INFO: Installing JSON v0.8.0
INFO: Installing SHA v0.2.1
INFO: Installing URIParser v0.1.6
INFO: Package database updated
julia> Pkg.add("PyPlot")
INFO: Installing ColorTypes v0.2.12
INFO: Installing Colors v0.6.9
INFO: Installing FixedPointNumbers v0.2.1
INFO: Installing LaTeXStrings v0.2.0
INFO: Installing MacroTools v0.3.2
INFO: Installing PyCall v1.7.2
INFO: Installing PyPlot v2.2.4
INFO: Installing Reexport v0.0.3
INFO: Building PyCall
INFO: PyCall is using python (Python 2.7.12) at /usr/bin/python, libpython
= libpython2.7
INFO: Package database updated
julia> using PyPlot
INFO: Recompiling stale cache file /home/daniel/.julia/lib/v0.5/PyPlot.ji
for module PyPlot.
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
/usr/lib/python2.7/dist-packages/matplotlib/__init__.py:1352: UserWarning:
This call to matplotlib.use() has no effect
because the backend has already been chosen;
matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.
warnings.warn(_use_error_msg)
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
WARNING: No working GUI backend found for matplotlib.
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py:273:
UserWarning: Matplotlib is building the font cache using fc-list. This may
take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This
may take a moment.')
ERROR: InitError: PyError (:PyImport_ImportModule) <type
'exceptions.IOError'>
IOError(13, 'Permission denied')
File "/usr/lib/python2.7/dist-packages/matplotlib/pyplot.py", line 29, in
<module>
import matplotlib.colorbar
File "/usr/lib/python2.7/dist-packages/matplotlib/colorbar.py", line 34,
in <module>
import matplotlib.collections as collections
File "/usr/lib/python2.7/dist-packages/matplotlib/collections.py", line
27, in <module>
import matplotlib.backend_bases as backend_bases
File "/usr/lib/python2.7/dist-packages/matplotlib/backend_bases.py", line
62, in <module>
import matplotlib.textpath as textpath
File "/usr/lib/python2.7/dist-packages/matplotlib/textpath.py", line 15,
in <module>
import matplotlib.font_manager as font_manager
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1421, in <module>
_rebuild()
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1406, in _rebuild
fontManager = FontManager()
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1059, in __init__
self.ttflist = createFontList(self.ttffiles)
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
581, in createFontList
font = ft2font.FT2Font(fpath)
in pyerr_check at /home/daniel/.julia/v0.5/PyCall/src/exception.jl:56
[inlined]
in pyerr_check at /home/daniel/.julia/v0.5/PyCall/src/exception.jl:61
[inlined]
in macro expansion at /home/daniel/.julia/v0.5/PyCall/src/exception.jl:81
[inlined]
in pyimport(::String) at /home/daniel/.julia/v0.5/PyCall/src/PyCall.jl:387
in __init__() at /home/daniel/.julia/v0.5/PyPlot/src/PyPlot.jl:235
in _include_from_serialized(::String) at ./loading.jl:150
in _require_from_serialized(::Int64, ::Symbol, ::String, ::Bool) at
./loading.jl:187
in require(::Symbol) at ./loading.jl:394
during initialization of module PyPlot
-----------------------------------
Ok. So first of all, PyPlot is grabbing the system-wide installation of
Python. I don't know how to tell PyPlot to look at the one that was
installed with the Conda package. Second, the errors are saying something
about fonts, but I can't figure out what they are saying. I am also
confused by the "permission denied" error:
ERROR: InitError: PyError (:PyImport_ImportModule) <type
'exceptions.IOError'>
IOError(13, 'Permission denied')
All the files seem to be present and have sensible permissions:
$ ls -l /usr/lib/python2.7/dist-packages/matplotlib/pyplot.py
-rw-r--r-- 1 root root 123661 Mar 21 2016
/usr/lib/python2.7/dist-packages/matplotlib/pyplot.py
$ ls -l /usr/lib/python2.7/dist-packages/matplotlib/font_manager.py
-rw-r--r-- 1 root root 47824 Jan 10 2016
/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py
So... I'm stuck. I would appreciate any help you might offer.
Cheers,
Daniel.
