/usr/share/doc/libeccodes-dev/examples/python/grib_get_message_offset.py is in libeccodes-dev 2.6.0-2.
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# Copyright 2005-2017 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.
#
# Python implementation: get_message_offset
#
# Description: how to get the message offset
#
from __future__ import print_function
import traceback
import sys
from eccodes import *
VERBOSE = 1 # verbose error reporting
def example():
if len(sys.argv) < 2:
print('Usage: ', sys.argv[0], ' file', file=sys.stderr)
sys.exit(1)
f = open(sys.argv[1])
while 1:
ident = codes_grib_new_from_file(f)
if ident is None:
break
print(codes_get_message_offset(ident))
codes_release(ident)
f.close()
def main():
try:
example()
except CodesInternalError as err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
sys.stderr.write(err.msg + '\n')
return 1
if __name__ == "__main__":
sys.exit(main())
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