Blackrock ns6 OverflowError: Python integer out of bounds for uint32

[luiztauffer]

import neo

base_path = ".../H0.2_openField_PPX_062723001"
r6 = neo.rawio.BlackrockRawIO(filename=base_path, nsx_to_load=[6], load_nev=False)
r6.parse_header()
r6.header

---------------------------------------------------------------------------
OverflowError                             Traceback (most recent call last)
Cell In[13], line 2
      1 r6 = neo.rawio.BlackrockRawIO(filename=base_path, nsx_to_load=[6], load_nev=False)
----> 2 r6.parse_header()
      3 r6.header

File ~/anaconda3/envs/env_nelson/lib/python3.13/site-packages/neo/rawio/baserawio.py:211, in BaseRawIO.parse_header(self)
    197 """
    198 Parses the header of the file(s) to allow for faster computations
    199 for all other functions
    200 
    201 """
    202 # this must create
    203 # self.header['nb_block']
    204 # self.header['nb_segment']
   (...)    208 # self.header['spike_channels']
    209 # self.header['event_channels']
--> 211 self._parse_header()
    212 self._check_stream_signal_channel_characteristics()
    213 self.is_header_parsed = True

File ~/anaconda3/envs/env_nelson/lib/python3.13/site-packages/neo/rawio/blackrockrawio.py:394, in BlackrockRawIO._parse_header(self)
    392 else:
    393     _data_reader_fun = self.__nsx_data_reader[spec]
--> 394 self.nsx_datas[nsx_nb] = _data_reader_fun(nsx_nb)
    396 sr = float(self.main_sampling_rate / self.__nsx_basic_header[nsx_nb]["period"])
    397 self.sig_sampling_rates[nsx_nb] = sr

File ~/anaconda3/envs/env_nelson/lib/python3.13/site-packages/neo/rawio/blackrockrawio.py:1061, in BlackrockRawIO.__read_nsx_data_variant_a(self, nsx_nb)
   1058 filename = ".".join([self._filenames["nsx"], f"ns{nsx_nb}"])
   1060 # get shape of data
-> 1061 shape = (self.__nsx_params["2.1"](nsx_nb)["nb_data_points"], self.__nsx_basic_header[nsx_nb]["channel_count"])
   1062 offset = self.__nsx_params["2.1"](nsx_nb)["bytes_in_headers"]
   1064 # read nsx data
   1065 # store as dict for compatibility with higher file specs

File ~/anaconda3/envs/env_nelson/lib/python3.13/site-packages/neo/rawio/blackrockrawio.py:2010, in BlackrockRawIO.__get_nsx_param_variant_a(self, nsx_nb)
   2005 else:
   2006     units = "uV"
   2008 nsx_parameters = {
   2009     "nb_data_points": int(
-> 2010         (self.__get_file_size(filename) - bytes_in_headers)
   2011         / (2 * self.__nsx_basic_header[nsx_nb]["channel_count"])
   2012         - 1
   2013     ),
   2014     "labels": labels,
   2015     "units": np.array([units] * self.__nsx_basic_header[nsx_nb]["channel_count"]),
   2016     "min_analog_val": -1 * np.array(dig_factor, dtype="float"),
   2017     "max_analog_val": np.array(dig_factor, dtype="float"),
   2018     "min_digital_val": np.array([-1000] * self.__nsx_basic_header[nsx_nb]["channel_count"]),
   2019     "max_digital_val": np.array([1000] * self.__nsx_basic_header[nsx_nb]["channel_count"]),
   2020     "timestamp_resolution": 30000,
   2021     "bytes_in_headers": bytes_in_headers,
   2022     "sampling_rate": 30000 / self.__nsx_basic_header[nsx_nb]["period"] * pq.Hz,
   2023     "time_unit": pq.CompoundUnit(f"1.0/{30000 / self.__nsx_basic_header[nsx_nb]['period']}*s"),
   2024 }
   2026 # Returns complete dictionary because then it does not need to be called so often
   2027 return nsx_parameters

OverflowError: Python integer 45999298976 out of bounds for uint32

Environment:

• OS: Linux
• Python 3.13.2
• Neo 0.15.0.dev0 (master branch)
• NumPy 2.2.4