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#!/usr/bin/env python3
# Copyright 2022- ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
#
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
# This example shows how to read key attributes.
#
# Usage: attributes.py input.bufr
# flake8: noqa: F403
# flake8: noqa: F405
import sys
from eccodes import *
from eccodes.highlevel import *
ATTRIBUTES = ["code", "units", "scale", "reference", "width"] # See BUFR Code Table B
def run_example(input, output=sys.stdout):
# Loop over the messages in the file
for number, bufr in enumerate(FileReader(input, CODES_PRODUCT_BUFR), start=1):
print(f"messageNumber: {number}", file=output)
# Loop over all keys in the message
for name in bufr.keys():
# Print element's attributes. Attributes themselves are keys.
for attribute in ATTRIBUTES:
try:
key = f"{name}->{attribute}"
value = bufr[key]
print(f"{key}: {value}", file=output)
except eccodes.KeyValueNotFoundError:
pass
if __name__ == "__main__":
run_example(sys.argv[1])
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