Coverage for python/lsst/obs/base/fitsGenericFormatter.py : 85%

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1# This file is part of daf_butler.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (http://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <http://www.gnu.org/licenses/>.
22__all__ = ("FitsGenericFormatter", )
24import os.path
26from lsst.daf.butler.formatters.fileFormatter import FileFormatter
29class FitsGenericFormatter(FileFormatter):
30 """Interface for reading and writing objects that support the standard
31 afw I/O readFits/writeFits methods.
32 """
33 extension = ".fits"
35 def _readFile(self, path, pytype):
36 """Read a file from the path in FITS format.
38 Parameters
39 ----------
40 path : `str`
41 Path to use to open the file.
42 pytype : `class`
43 Class to use to read the FITS file.
45 Returns
46 -------
47 data : `object`
48 Instance of class `pytype` read from FITS file. None
49 if the file could not be opened.
50 """
51 if not os.path.exists(path): 51 ↛ 52line 51 didn't jump to line 52, because the condition on line 51 was never true
52 return None
54 return pytype.readFits(path)
56 def _writeFile(self, inMemoryDataset):
57 """Write the in memory dataset to file on disk.
59 Parameters
60 ----------
61 inMemoryDataset : `object`
62 Object to serialize.
64 Raises
65 ------
66 Exception
67 The file could not be written.
68 """
69 inMemoryDataset.writeFits(self.fileDescriptor.location.path)