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Backport PR #5351 on branch yt-4.4.x (Fix trailing whitespace in RAMSES sink particle field name)" #5559

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Merged
chrishavlin merged 1 commit into from
Oct 6, 2026
Merged

Backport PR #5351 on branch yt-4.4.x (Fix trailing whitespace in RAMSES sink particle field name)" #5559

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8 changes: 5 additions & 3 deletions yt/frontends/ramses/io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -144,7 +144,8 @@ def _ramses_particle_csv_file_handler(particle_handler, subset, fields, count):
# read only selected fields
dat = pd.read_csv(
fname,
delimiter=",",
delimiter=r"\s*,\s*",
engine="python",
usecols=[ind for _field, ind in list_field_ind],
skiprows=2,
header=None,
Expand Down Expand Up @@ -360,7 +361,7 @@ def _read_part_csv_file_descriptor(fname: Union[str, "os.PathLike[str]"]):

# Fields name from the default csv RAMSES sink algorithm in the yt default convention
mapping = {
" # id": "particle_identifier",
"# id": "particle_identifier",
"msink": "particle_mass",
"x": "particle_position_x",
"y": "particle_position_y",
Expand All @@ -386,11 +387,12 @@ def _read_part_csv_file_descriptor(fname: Union[str, "os.PathLike[str]"]):
}

# read the all file to get the number of particle
dat = pd.read_csv(fname, delimiter=",")
dat = pd.read_csv(fname, delimiter=r"\s*,\s*", engine="python")
fields = []
local_particle_count = len(dat)

for varname in dat.columns:
varname = varname.strip()
if varname in mapping:
varname = mapping[varname]
else:
Expand Down
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