eccodes_grib_file_reader_with_key_value_extraction.py

1import traceback
2import sys
3from eccodes import *
4
5INPUT = '../../data/reduced_latlon_surface.grib1'
6VERBOSE = 1  # verbose error reporting
7
8def example():
9    f = open(INPUT, 'rb')
10
11    while 1:
12        gid = codes_grib_new_from_file(f)
13        if gid is None:
14            break
15
16        keys = [
17            'edition',
18            'date',
19            'centre',
20        ]
21
22        for key in keys:
23            try:
24                print('  %s: %s' % (key, codes_get(gid, key)))
25            except CodesInternalError as err:
26                print('Error with key "%s" : %s' % (key, err.msg))
27
28        codes_release(gid)
29
30    f.close()
31
32def main():
33    try:
34        example()
35    except CodesInternalError as err:
36        if VERBOSE:
37            traceback.print_exc(file=sys.stderr)
38        else:
39            sys.stderr.write(err.msg + '\n')
40
41        return 1
42
43if __name__ == "__main__":
44    sys.exit(main())