Why does Julia 0.5 keep complaining about method re-definitions?
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Daniel Carrera
Sep 27, 2016, 1:56:27 PM9/27/16
to julia-users
Hello,
I'm not sure when I upgraded, but I am using Julia 0.5 and now it complains every time I redefine a method, which is basically all the time. When I'm developing ideas I usually have a file with a script that I modify and reload all the time:
julia> include("foo.jl");
... see the results, edit file ...
julia> include("foo.jl");
... see the results, edit file ...
julia> include("foo.jl");
... see the results, edit file ...
And so on. This is what I do most of the time. But now every time I `include("foo.jl")` I get warnings for every method that has been redefined (which is all of them):
julia> include("foo.jl");
WARNING: Method definition (::Type{Main.Line})(Float64, Float64) in module Main at /home/daniel/Data/Science/Thesis/SI.jl:4 overwritten at /home/daniel/Data/Science/Thesis/SI.jl:4.
WARNING: Method definition (::Type{Main.Line})(Any, Any) in module Main at /home/daniel/Data/Science/Thesis/SI.jl:4 overwritten at /home/daniel/Data/Science/Thesis/SI.jl:4.
WARNING: Method definition new_line(Any, Any, Any) in module Main at /home/daniel/Data/Science/Thesis/SI.jl:8 overwritten at /home/daniel/Data/Science/Thesis/SI.jl:8.
Is there a way that this can be fixed? How can I recover Julia's earlier behaviour? This is very irritating, and I don't think it makes sense for a functional language like Julia. If I wrote a method as a variable assignment (e.g. "foo = x -> 2*x") Julia wouldn't complain.
Thanks for the help,
Daniel.
Andrew
Sep 27, 2016, 3:13:00 PM9/27/16
to julia-users
It seems like a lot of people are complaining about this. Is there some way to suppress method overwritten warnings for an include() statement? Perhaps a keyword like include("foo.jl", quietly = true)?
Chris Rackauckas
Sep 27, 2016, 3:43:15 PM9/27/16
to julia-users
Or just a standard way to suppress warnings of a given type (say, surpress("MethodDefinition")). For now, Suppressor.jl does well.
Cedric St-Jean
Sep 27, 2016, 3:45:39 PM9/27/16
to julia-users
I wrote a work-around earlier today:
It's fresh off the press, so please file an issue if you encounter a problem. It calls `include` under the hood; there's no magic involved. I just intercept STDERR and remove the redefinition warnings.
Pkg.clone("git://github.com/cstjean/ClobberingReload.jl.git")
using ClobberingReload: sinclude # silent include
sinclude("foo.jl") # no redefinition warnings
It's fresh off the press, so please file an issue if you encounter a problem. It calls `include` under the hood; there's no magic involved. I just intercept STDERR and remove the redefinition warnings.
Cedric St-Jean
Sep 27, 2016, 3:56:05 PM9/27/16
to julia-users
@Chris: I agree; if warnings were typed, we could selectively activate them. I'm using regexes for now:
ClobberingReload.scrub_stderr(r"WARNING\: redefining constant .*\n", r"WARNING\: replacing docs for .*\n", ...) do
...
endDaniel Carrera
Sep 27, 2016, 4:14:29 PM9/27/16
to julia...@googlegroups.com
Thanks! You are a savior!
Here is something odd: when I installed it with Pkg.clone(...) my Julia decided that it also had to update Conda and install Jupyter. Is this some weird quirk of my setup. I notice that you import IJulia, so I guess that has something to do with it. It's not a big deal; I just thought it was weird to see the package manager installing stuff like Qt, fontconfig, SSL, and libxml just to clobber include().
But other than that, it works fabulously. Thank you so much!
Cheers,
Daniel.
Cedric St-Jean
Sep 27, 2016, 4:30:32 PM9/27/16
to julia...@googlegroups.com
Yeah, it's because of IJulia, sorry about that. I need it to support autoreloading. I could split the package in two, but it's small enough already that it doesn't feel like the right call.
One day we'll get conditional imports...
K leo
Sep 28, 2016, 12:53:12 AM9/28/16
to julia-users
This a very heavy install. It's fetching tons of things that I have not used. Not sure what they are, but seems like trashing my system.
K leo
Sep 28, 2016, 12:55:53 AM9/28/16
to julia-users
On Wednesday, September 28, 2016 at 12:53:12 PM UTC+8, K leo wrote:
This a very heavy install. It's fetching tons of things that I have not used. Not sure what they are, but seems like trashing my system.
julia> Pkg.clone("git://github.com/cstjean/ClobberingReload.jl.git")
INFO: Cloning ClobberingReload from git://github.com/cstjean/ClobberingReload.jl.git
INFO: Computing changes...
INFO: Cloning cache of IJulia from https://github.com/JuliaLang/IJulia.jl.git
INFO: Cloning cache of Nettle from https://github.com/staticfloat/Nettle.jl.git
INFO: Cloning cache of ZMQ from https://github.com/JuliaLang/ZMQ.jl.git
INFO: Installing Conda v0.3.2
INFO: Installing IJulia v1.3.2
INFO: Installing Nettle v0.2.4
INFO: Installing ZMQ v0.3.4
INFO: Building Nettle
INFO: Building ZMQ
INFO: Building IJulia
INFO: Installing Jupyter via the Conda package.
INFO: Downloading miniconda installer ...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 25.9M 100 25.9M 0 0 1104k 0 0:00:24 0:00:24 --:--:-- 2297k
INFO: Installing miniconda ...
PREFIX=/home/xxx/.julia/v0.5/Conda/deps/usr
installing: _cache-0.0-py27_x0 ...
installing: python-2.7.11-0 ...
installing: conda-env-2.4.5-py27_0 ...
installing: openssl-1.0.2g-0 ...
installing: pycosat-0.6.1-py27_0 ...
installing: pyyaml-3.11-py27_1 ...
installing: readline-6.2-2 ...
installing: requests-2.9.1-py27_0 ...
installing: sqlite-3.9.2-0 ...
installing: tk-8.5.18-0 ...
installing: yaml-0.1.6-0 ...
installing: zlib-1.2.8-0 ...
installing: conda-4.0.5-py27_0 ...
installing: pycrypto-2.6.1-py27_0 ...
installing: pip-8.1.1-py27_1 ...
installing: wheel-0.29.0-py27_0 ...
installing: setuptools-20.3-py27_0 ...
Python 2.7.11 :: Continuum Analytics, Inc.
creating default environment...
installation finished.
Fetching package metadata: ....
Solving package specifications: .........
Package plan for installation in environment /home/xxx/.julia/v0.5/Conda/deps/usr:
The following packages will be downloaded:
package | build
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conda-env-2.6.0 | 0 502 B
expat-2.1.0 | 0 365 KB
icu-54.1 | 0 11.3 MB
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libffi-3.2.1 | 0 36 KB
libgcc-5.2.0 | 0 1.1 MB
libsodium-1.0.10 | 0 1.2 MB
libxcb-1.12 | 0 1.5 MB
sqlite-3.13.0 | 0 4.0 MB
dbus-1.10.10 | 0 2.4 MB
glib-2.43.0 | 1 5.4 MB
libpng-1.6.22 | 0 214 KB
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python-2.7.12 | 1 12.1 MB
zeromq-4.1.4 | 0 4.1 MB
backports-1.0 | py27_0 1 KB
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decorator-4.0.10 | py27_0 12 KB
enum34-1.1.6 | py27_0 53 KB
freetype-2.5.5 | 1 2.5 MB
functools32-3.2.3.2 | py27_0 15 KB
gstreamer-1.8.0 | 0 2.6 MB
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markupsafe-0.23 | py27_2 31 KB
mistune-0.7.3 | py27_0 560 KB
path.py-8.2.1 | py27_0 45 KB
ptyprocess-0.5.1 | py27_0 19 KB
pygments-2.1.3 | py27_0 1.2 MB
pytz-2016.6.1 | py27_0 178 KB
pyzmq-15.4.0 | py27_0 705 KB
ruamel_yaml-0.11.14 | py27_0 352 KB
simplegeneric-0.8.1 | py27_1 7 KB
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pathlib2-2.1.0 | py27_0 26 KB
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entrypoints-0.2.2 | py27_0 6 KB
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pickleshare-0.7.4 | py27_0 8 KB
qt-5.6.0 | 0 43.9 MB
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terminado-0.6 | py27_0 18 KB
ipykernel-4.5.0 | py27_0 123 KB
nbconvert-4.2.0 | py27_0 310 KB
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nb_anacondacloud-1.2.0 | py27_0 23 KB
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_nb_ext_conf-0.3.0 | py27_0 956 B
nbpresent-3.0.2 | py27_0 463 KB
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Total: 120.4 MB
The following NEW packages will be INSTALLED:
_nb_ext_conf: 0.3.0-py27_0
anaconda-client: 1.5.1-py27_0
backports: 1.0-py27_0
backports_abc: 0.4-py27_0
clyent: 1.2.2-py27_0
configparser: 3.5.0-py27_0
dbus: 1.10.10-0
decorator: 4.0.10-py27_0
entrypoints: 0.2.2-py27_0
enum34: 1.1.6-py27_0
expat: 2.1.0-0
fontconfig: 2.11.1-6
freetype: 2.5.5-1
functools32: 3.2.3.2-py27_0
get_terminal_size: 1.0.0-py27_0
glib: 2.43.0-1
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ipython: 5.1.0-py27_0
ipython_genutils: 0.1.0-py27_0
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jinja2: 2.8-py27_1
jpeg: 8d-1
jsonschema: 2.5.1-py27_0
jupyter: 1.0.0-py27_3
jupyter_client: 4.4.0-py27_0
jupyter_console: 5.0.0-py27_0
jupyter_core: 4.2.0-py27_0
libffi: 3.2.1-0
libgcc: 5.2.0-0
libpng: 1.6.22-0
libsodium: 1.0.10-0
libxcb: 1.12-0
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markupsafe: 0.23-py27_2
mistune: 0.7.3-py27_0
nb_anacondacloud: 1.2.0-py27_0
nb_conda: 2.0.0-py27_0
nb_conda_kernels: 2.0.0-py27_0
nbconvert: 4.2.0-py27_0
nbformat: 4.1.0-py27_0
nbpresent: 3.0.2-py27_0
notebook: 4.2.3-py27_0
path.py: 8.2.1-py27_0
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pexpect: 4.0.1-py27_0
pickleshare: 0.7.4-py27_0
prompt_toolkit: 1.0.3-py27_0
ptyprocess: 0.5.1-py27_0
pygments: 2.1.3-py27_0
pyqt: 5.6.0-py27_0
python-dateutil: 2.5.3-py27_0
pytz: 2016.6.1-py27_0
pyzmq: 15.4.0-py27_0
qt: 5.6.0-0
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ruamel_yaml: 0.11.14-py27_0
simplegeneric: 0.8.1-py27_1
singledispatch: 3.4.0.3-py27_0
sip: 4.18-py27_0
six: 1.10.0-py27_0
ssl_match_hostname: 3.4.0.2-py27_1
terminado: 0.6-py27_0
tornado: 4.4.1-py27_0
traitlets: 4.3.0-py27_0
wcwidth: 0.1.7-py27_0
widgetsnbextension: 1.2.6-py27_0
zeromq: 4.1.4-0
The following packages will be UPDATED:
conda: 4.0.5-py27_0 --> 4.2.9-py27_0
conda-env: 2.4.5-py27_0 --> 2.6.0-0
python: 2.7.11-0 --> 2.7.12-1
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julia>
Chris Rackauckas
Sep 28, 2016, 1:36:01 AM9/28/16
to julia-users
You could've just used Suppressor.jl...
Daniel Carrera
Sep 28, 2016, 3:56:04 AM9/28/16
to julia...@googlegroups.com
Suppressor.jl would suppress everything, right?
So the idea is that one would use `@suppress import("foo.jl")` ?
As heavy as ClobberingReload.jl is, I appreciate that it only suppresses *one* error -- the annoying "you redefined a method" error that IMO should never have existed in the first place. If there are other errors, like syntax errors, in my script, I do want to hear about those. Or have I misunderstood how Suppressor.jl works?
Cheers,
Daniel.
Ismael Venegas Castelló
Sep 28, 2016, 4:16:01 AM9/28/16
to julia-users
Daniel indeed Suppressor provides the following macros: @suppress (will suppress both STDERR and STDOUT), @suppress_out (just STDOUT) and @suppress_err (just STDERR), notice that STDERR suppresses warnings but not errors! This can be easily understood reading code in the README:
So in order to ignore the error you would have to explicitly wrap it in a try and explicitly silence it. Also notice that:
is a syntax error, you're supposed to do:
instead. If you find a bug please file an issue, thanks!
julia> using Suppressor
julia> @suppress begin
println("This string doesn't get printed!")
warn("This warning is ignored.")
end
julia> @suppress_out begin
println("This string doesn't get printed!")
warn("This warning is important")
end
WARNING: This warning is important
julia> @suppress_err begin
println("This string gets printed!")
warn("This warning is unimportant")
end
This string gets printed!
julia> @suppress begin
println("This string doesn't get printed!")
warn("This warning is ignored.")
error("Remember that errors are still printed!")
end
------------------------------------------------------------------------------------------
ErrorException Stacktrace (most recent call last)
[#2] — anonymous
⌙ at <missing>:?
[#1] — macro expansion;
⌙ at Suppressor.jl:16 [inlined]
Remember that errors are still printed!
julia>
import("foo.jl")
@suppress include("foo.jl")instead. If you find a bug please file an issue, thanks!
Cedric St-Jean
Sep 28, 2016, 8:25:37 AM9/28/16
to julia-users
I just removed the IJulia dependency from ClobberingReload.jl (made it optional - autoreload still works for IJulia users). Thank you for the feedback. If you `Pkg.checkout("ClobberingReload")`, it should automatically remove IJulia and its dependencies.
BTW, if you haven't tried IJulia/Jupyter notebooks, I would strongly recommend giving it a shot. It's the #2 most popular Julia package for a reason.
Cédric
K leo
Sep 28, 2016, 8:45:37 AM9/28/16
to julia-users
julia> Pkg.checkout("ClobberingReload")
ERROR: ClobberingReload is not a git repo
in checkout(::String, ::String, ::Bool, ::Bool) at ./pkg/entry.jl:225
in (::Base.Pkg.Dir.##2#3{Array{Any,1},Base.Pkg.Entry.#checkout,Tuple{String,String,Bool,Bool}})() at ./pkg/dir.jl:31
in cd(::Base.Pkg.Dir.##2#3{Array{Any,1},Base.Pkg.Entry.#checkout,Tuple{String,String,Bool,Bool}}, ::String) at ./file.jl:59
in #cd#1(::Array{Any,1}, ::Function, ::Function, ::String, ::Vararg{Any,N}) at ./pkg/dir.jl:31
in checkout(::String) at ./pkg/pkg.jl:170
Thanks for the tip on IJulia/Jupyter. Will try them.
Cedric St-Jean
Sep 28, 2016, 9:04:22 AM9/28/16
to julia...@googlegroups.com
That's weird, I'm pretty sure that I've had the same issue when I tried it just now, but I can't seem to reproduce it. ClobberingReload is still installed on your system, right? How about this?
Pkg.checkout("ClobberingReload", "master")
If you want to try IJulia, you should Pkg.add("IJulia") before doing this, because otherwise it'll get uninstalled by the Pkg.checkout, and it's the package that dragged all of the dependencies you listed above.
J Luis
Sep 28, 2016, 9:15:38 AM9/28/16
to julia-users
This a very heavy install. It's fetching tons of things that I have not used. Not sure what they are, but seems like trashing my system.
Yes, unfortunately Conda is an unbearably big dependency (over 1.xxx Gb) that sneaks in via un-suspicious packages. A dependency this big should never install without a strict user consent. Docs explain how to avoid it but don't find the explanation clear. I had to declare this
ENV["JUPYTER"]="C:/programs/WinPython-3.5.2.2_64/python-3.5.2.amd64/Scripts/jupyter"
to really prevent a Conda installation
Daniel Carrera
Sep 29, 2016, 8:07:20 AM9/29/16
to julia...@googlegroups.com
Hi everyone,
I created a new issue asking the Julia developers to please restore the earlier behaviour. I would be immensely grateful if you could write on this issue and let the Julia developers know that I am not the only person who would be happier without the sea of warnings.
Cheers,
Daniel.
Tom Breloff
Oct 12, 2016, 1:22:21 PM10/12/16
to julia-users
I just immediately found a bug thanks to the redefinition warning:
julia> using Plots; plotlyjs()
INFO: Recompiling stale cache file /home/tom/.julia/lib/v0.5/Plots.ji for module Plots.
WARNING: Method definition apply_recipe(Base.Dict{Symbol, Any}, Type{Base.Dates.Date}, Base.Dates.Date) in module Plots at /home/tom/.julia/v0.5/RecipesBase/src/RecipesBase.jl:232 overwritten at /home/tom/.julia/v0.5/RecipesBase/src/RecipesBase.jl:232.
So... thanks. :)
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