[Numpy-discussion] Copy netcdf attributes between different files

Jeff Whitaker jswhit@fastmail...
Mon Nov 14 11:07:29 CST 2011


On 11/14/11 10:04 AM, Giovanni Plantageneto wrote:
> Hi everybody,
> I am using netCDF4 library to read and write from netcdf files. I
> would like to copy all the attributes of one file to another one, in a
> way like this:
>
> ---
>
> from netCDF4 import Dataset as ncdf
>
> file1 = ncdf('file1.nc', mode='r', format='NETCDF4_CLASSIC')
> ...
> file2 = ncdf('file1.nc', mode='w', format='NETCDF4_CLASSIC')
> for att in file1.ncattrs():
>     file2.att = file1.getncatt(att)
> ...
> file1.close()
> file2.close()
>
> ---
>
> But this will not work as only one attribute named "att" in file2 will
> be created. How should I do this?
> Thanks.
>
Try this:

for att in file1.ncattrs():
    setattr(file2,att) = getattr(file1,att)

-Jeff


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