[yt-users] error info "TypeError: unhashable type: 'list'" with FLASH check point data

[Ji Suoqing]

Hi all,

I've always been using YT to analyze FLASH data (plot file and check point file), and it works well. 

However, recently I have added magnetic field into FLASH, so the check point file contains more index: MAGX, MAGY, MAGZ, MAGP, etc. And if I use YT to deal with check point file, error will occur. Say:

>>> pf=load('merger_hdf5_chk_0000')
yt : [WARNING  ] 2012-07-08 08:30:20,419 Setting 1.0 in code units to be 1.0 cm
yt : [WARNING  ] 2012-07-08 08:30:20,419 No time units.  Setting 1.0 = 1 second.
yt : [INFO     ] 2012-07-08 08:30:20,419 Parameters: current_time              = 0.0
yt : [INFO     ] 2012-07-08 08:30:20,419 Parameters: domain_dimensions         = [64 64  4]
yt : [INFO     ] 2012-07-08 08:30:20,419 Parameters: domain_left_edge          = [  0.00000000e+00  -6.55360000e+09   0.00000000e+00]
yt : [INFO     ] 2012-07-08 08:30:20,420 Parameters: domain_right_edge         = [  2.62144000e+10   6.55360000e+09   1.74532925e-02]
yt : [INFO     ] 2012-07-08 08:30:20,420 Parameters: cosmological_simulation   = 0.0
yt : [WARNING  ] 2012-07-08 08:30:20,420 Setting 1.0 in code units to be 1.0 cm
yt : [WARNING  ] 2012-07-08 08:30:20,420 No time units.  Setting 1.0 = 1 second.

>>> for field in pf.h.field_list: print field
... 
yt : [INFO     ] 2012-07-08 08:30:35,531 Adding unknown field dens to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field divb to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field eint to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field ener to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field fspd to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field gamc to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field game to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field gpol to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,532 Adding unknown field gpot to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field magp to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field magx to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field magy to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field magz to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field pres to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field temp to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field velx to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field vely to list of fields
yt : [INFO     ] 2012-07-08 08:30:35,533 Adding unknown field velz to list of fields
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/aphelion/jisuoqing/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py", line 172, in hierarchy
    self, data_style=self.data_style)
  File "/aphelion/jisuoqing/yt-x86_64/src/yt-hg/yt/frontends/flash/data_structures.py", line 73, in __init__
    AMRHierarchy.__init__(self,pf,data_style)
  File "/aphelion/jisuoqing/yt-x86_64/src/yt-hg/yt/data_objects/hierarchy.py", line 83, in __init__
    self._setup_unknown_fields()
  File "/aphelion/jisuoqing/yt-x86_64/src/yt-hg/yt/data_objects/hierarchy.py", line 146, in _setup_unknown_fields
    ff = self.parameter_file.field_info.pop(field, None)
TypeError: unhashable type: 'list'

By the way, YT still works fine with plot file in this case.

I sincerely appreciate it if you could provide me with any suggestions on this.

Best wishes,
Suoqing