eccodes/examples/python/keys_iterator.py

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2013-03-25 12:04:10 +00:00
import traceback
import sys
from gribapi import *
INPUT='../../data/reduced_latlon_surface.grib1'
VERBOSE=1 # verbose error reporting
def example():
f = open(INPUT)
while 1:
gid = grib_new_from_file(f)
if gid is None: break
iterid = grib_keys_iterator_new(gid,'ls')
# Different types of keys can be skipped
# grib_skip_computed(iterid)
# grib_skip_coded(iterid)
# grib_skip_edition_specific(iterid)
# grib_skip_duplicates(iterid)
# grib_skip_read_only(iterid)
# grib_skip_function(iterid)
while grib_keys_iterator_next(iterid):
keyname = grib_keys_iterator_get_name(iterid)
keyval = grib_get_string(iterid,keyname)
print "%s = %s" % (keyname,keyval)
grib_keys_iterator_delete(iterid)
grib_release(gid)
f.close()
def main():
try:
example()
except GribInternalError,err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
print >>sys.stderr,err.msg
return 1
if __name__ == "__main__":
sys.exit(main())