[FLASH-USERS] FLASH's python tools

Tue Jun 1 11:08:30 EDT 2021

Hi Jian,

I'd recommend copy pasting the exact command you're using at the command
line, similar to how you've been copy-pasting the Traceback error messages.
I'd also recommend following the instructions in the quickstart guide here:
http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p62/node13.html
(or for the corresponding version of FLASH you're using).

The flmake documentation you linked to is from FLASH4 ***beta*** which I
would guess is around 10+ years old, so it's unsurprising to me that it
doesn't work with FLASH4.6+. The good news is plotting natively with yt is
simple enough, and the yt community is pretty helpful.

Best,
--------
Ryan

On Tue, Jun 1, 2021 at 2:04 AM Jian Fuh Ong <jianfuh.ong at eli-np.ro> wrote:

> Hi Ryan,
>
> I just downloaded FLASH4.6 and *python setup.py install --**user* return
>
>   File "setup.py", line 42
>     print "RELEASE file not found at " + release_path
>                                      ^
> SyntaxError: Missing parentheses in call to 'print'. Did you mean
> print("RELEASE file not found at " + release_path)?
>
> The <> operator still appear in utils.py. I am not sure if this python
> tool also changed to python3. Using python2.7 gives
>
> Traceback (most recent call last):
>   File "setup.py", line 207, in <module>
>     run_setup()
>   File "setup.py", line 199, in run_setup
>     make_bash_completion()
>   File "setup.py", line 118, in make_bash_completion
>     import flash.flmake.__init__
> ImportError: No module named flash.flmake.__init__
>
> I see the flamake lines here.
>
> http://flash.uchicago.edu/site/flashcode/user_support/tools4b/usersguide/output.html#
>
> All I need to do is to extract the data from hdf5 file for plotting, i.e.
>
> from flash import outputimport matplotlib.pyplot as pltx, y, z = output.slice(2, 0.0, 'dens', "<path to chk>")plt.imshow(z)plt.show()
>
>
> Regards,
> Jian Fuh
>
>
>
> On 31 May 2021, at 7:14 PM, Ryan Farber <rjfarber at umich.edu> wrote:
>
> Hi Ong,
>
> Unfortunately, I appear to have deleted my FLASH 4.6.2 installation. I had
> thought it should be fine with python3 but can't confirm at this time.
> However, the user guide suggests python3 compatibility since FLASH 4.6 as I
> had thought so perhaps there is some improper link for the download of
> FLASH 4.6.2 pointing to an older version?
>
> http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p62/node6.html
>
> Regarding the flmake lines in the user guide, where do you see that? I
> haven't used that tool before. I don't see flmake referenced in the
> quickstart guide (just double-checked)
>
> http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p62/node13.html
> .
>
> If you don't require FLASH 4.6.2 you can see if FLASH4.6 setup works with
> your python3 environment (there shouldn't be those diamond operators except
> in older version of FLASH). However, I'm pretty sure python 2.7 will work
> if you don't use flmake since the error you reported had to do with that
> tool.
>
> Best,
> --------
> Ryan
>
>
> On Sun, May 30, 2021 at 11:46 PM Ong Jian Fuh <jianfuh.ong at eli-np.ro>
> wrote:
> Dear Ryan,
>
> Thanks for your reply. I am using FLASH4.6.2 and I believe this is the
> latest version. I still need to replace print msg to print(msg), which is
> still in python2.7. Fixing the symbol with "!=" then many more issues exist
> as you suggested. Such as
>
>  File "/home/ong/.local/lib/python3.8/site-packages/flash/flmake/setup_globals.py", line
> 204, in set
>     if type(value) != types.StringType:
> AttributeError: module 'types' has no attribute 'StringType'
>
> Then I try using python2.7. and return the following error
>
> Writing /home/ong/.local/lib/python2.7/site-packages/flash-0.1.egg-info
> Traceback (most recent call last):
>   File "setup.py", line 207, in <module>
>     run_setup()
>   File "setup.py", line 199, in run_setup
>     make_bash_completion()
>   File "setup.py", line 118, in make_bash_completion
>     import flash.flmake.__init__
> ImportError: No module named flash.flmake.__init__
>
> Is there any update from FLASH's python tools to python3? I am using
> jupyter notebook which run on python3.8.8. Switching from one version to
> another would be quite troublesome.
>
> In addition, I am not clear what the following lines in the user's guide
> do and how it relate to the simulation
>
> $ mkdir temp
> $ cd temp
> $ flmake setup -auto Sedov
> $ flmake build -j 20
> $ flmake run -n 20
>
> Regards,
>
> Dr. Ong Jian Fuh
> Extreme Light Infrastructure - Nuclear Physics
> "Horia Hulubei" National Institute for Physics and Nuclear Engineering
> 30 Reactorului Street, 077125 Magurele (Ilfov), Romania
>
> www.eli-np.ro
> On 28/05/2021 6:06 pm, Ryan Farber wrote:
>
> Hi Ong,
>
> I remember being mystified the first time I encountered that archaic
> "diamond operator."
>
> The easiest solutions are:
> 1. Use the latest FLASH, where they updated the python code to be
> compatible with python3
> 2. Use python2 if you need to use an old version of FLASH (like me :))
>
> Or, you can replace "<>" with "!=", although there will be many more
> issues you'll subsequently need to convert.
>
> Best,
> --------
> Ryan
>
>
> On Fri, May 28, 2021 at 8:33 AM Ong Jian Fuh <jianfuh.ong at eli-np.ro>
> wrote:
> Dear all,
>
> Good afternoon. I am trying to install the FLASH python tools for the
> plotting.
>
> Doing python setup.py install --user
>
> return
>
> running install
> running build
> running build_py
> copying python/metadata.json -> build/lib/flash
> running build_scripts
> running install_lib
> copying build/lib/flash/metadata.json
> -> /home/ong/.local/lib/python3.8/site-packages/flash
> byte-compiling /home/ong/.local/lib/python3.8/site-packages/flash/flmake/utils.py to
> utils.cpython-38.pyc
>
> File "/home/ong/.local/lib/python3.8/site-packages/flash/flmake/utils.py", line
> 423
>     if len(parts) <> 2:
>                          ^
> SyntaxError: invalid syntax
>
> I am using python3.8. What can I do to fix this or use it with new python?
> Thanks.
>
> --
> Regards,
>
> Dr. Ong Jian Fuh
> Extreme Light Infrastructure - Nuclear Physics
> "Horia Hulubei" National Institute for Physics and Nuclear Engineering
> 30 Reactorului Street, 077125 Magurele (Ilfov), Romania
>
> www.eli-np.ro
>
>
>
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