Write columns to a fits file in a table extension.
filename : str
The fits file name
data : list of 1D arrays
A list of 1D arrays to write in the table
hdu : int, optional
The header where to write the data. Default: 1
colnames : list of str
The column names
keys : dict-like
A dictionary with keywords to write in the header
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healpy.fitsfunc.mrdfits
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