Issues

• Silently writing attributes with native endianess without conversion

  Unidata/netcdf4-python#1502 · Filter by author kmuehlbauer opened on Sep 29, 2026

• nc3tonc4, nc4tonc3 and ncinfo exit 0 on unknown options and missing arguments; nc4tonc3 ignores --chunk

  Unidata/netcdf4-python#1500 · Filter by author Santoshkumarpuppala opened on Sep 27, 2026

• Reported python support is wrong in 1.7.4 release

  Unidata/netcdf4-python#1491 · Filter by author ckutlu opened on Aug 4, 2026
  2

• Allow mode flag to be passed to nc_open() to support additional dispatch layers

  Unidata/netcdf4-python#1490 · Filter by author captainkirk99 opened on Aug 2, 2026
  1

• Potential Bug Accessing Masked Data

  Unidata/netcdf4-python#1487 · Filter by author nmiles2718 opened on Jul 18, 2026
  1

• PermissionError on Windows when a directory in the path contains non-ASCII characters (netCDF4 1.7.4 / libnetcdf 4.9.3)

  Unidata/netcdf4-python#1482 · Filter by author FBumann opened on Jun 18, 2026
  3

• Impossible to set a dimension with size=0

  Unidata/netcdf4-python#1480 · Filter by author davide-f opened on Apr 23, 2026
  4

• Save number attribute as scalar and not as array?

  Unidata/netcdf4-python#1445 · Filter by author paugier opened on Nov 6, 2025
  6

• Segmentation fault when opening already open dataset

  Unidata/netcdf4-python#1444 · Filter by author g2knizn opened on Nov 3, 2025
  4

• Coverage reports "No source for code: '..src/netCDF4/_netCDF4.pyx';" with 1.7.3

  Unidata/netcdf4-python#1439 · Filter by author pjonsson opened on Oct 21, 2025
  1

• HDF5 error with netcdf4 1.7.3 and h5py on linux with pypi

  Unidata/netcdf4-python#1438 · Filter by author shumpohl opened on Oct 15, 2025
  17

• NetCDF4 file growing 50% in size with MPI enabled.

  Unidata/netcdf4-python#1430 · Filter by author leuchthelp opened on Sep 29, 2025
  3

• Dataset() with mode="w" truncates file despite PermissionError

  Unidata/netcdf4-python#1423 · Filter by author GiusCappelli opened on Sep 5, 2025
  15

• Undefined symbol : pfnc_inq_vardimid during import netCDF4

  Unidata/netcdf4-python#1417 · Filter by author fparadiss opened on Aug 4, 2025
  5

• Writing a file with auto_complex=True fails when using a dimension for the complex components

  Unidata/netcdf4-python#1404 · Filter by author ZedThree opened on Apr 16, 2025
  1

• Writing a dataset to the same file twice results in OSError

  Unidata/netcdf4-python#1394 · Filter by author alessandraquig opened on Jan 7, 2025
  1

• Severe performance degradation with bundled netcdf library in wheel packages (Linux)

  Unidata/netcdf4-python#1393 · Filter by author xavierabellan opened on Dec 2, 2024
  6

• add ability to set plugin search path programatically

  Unidata/netcdf4-python#1392 · Filter by author jswhit opened on Nov 27, 2024

• Allow explicitly building without mpi4py?

  Unidata/netcdf4-python#1389 · Filter by author AlexanderRichert-NOAA opened on Nov 19, 2024
  11

• In Memory netcdf subdatasets do not persist order when buffer is closed

  Unidata/netcdf4-python#1388 · Filter by author lagamura opened on Nov 17, 2024
  8

• Possible to release wheel for python 3.13/macos 13/arm?

  Unidata/netcdf4-python#1385 · Filter by author jameswilburlewis opened on Nov 12, 2024
  7

• NFC normalize strings?

  Unidata/netcdf4-python#1379 · Filter by author ChrisBarker-NOAA opened on Oct 28, 2024
  4

• 2D string variable update causes HDF Error when rereading file

  Unidata/netcdf4-python#1366 · Filter by author robin-cls opened on Sep 25, 2024
  6

• Compiling with GCC 14

  Unidata/netcdf4-python#1360 · Filter by author papoteur-mga opened on Aug 21, 2024
  2

• Error in renameDimension

  Unidata/netcdf4-python#1357 · Filter by author veenstrajelmer opened on Aug 7, 2024
  7