def add_timestamp_parser(session):
factory = session.get_component('response_parser_factory')
try:
timestamp_format = session.get_scoped_config().get(
'cli_timestamp_format',
'none')
except ProfileNotFound:
# If a --profile is provided that does not exist, loading
# a value from get_scoped_config will crash the CLI.
# This function can be called as the first handler for
# the session-initialized event, which happens before a
# profile can be created, even if the command would have
# successfully created a profile. Instead of crashing here
# on a ProfileNotFound the CLI should just use 'none'.
timestamp_format = 'none'
if timestamp_format == 'none':
# For backwards compatibility reasons, we replace botocore's timestamp
# parser (which parses to a datetime.datetime object) with the
# identity function which prints the date exactly the same as it comes
# across the wire.
timestamp_parser = identity
elif timestamp_format == 'iso8601':
timestamp_parser = iso_format
else:
raise ValueError('Unknown cli_timestamp_format value: %s, valid values'
' are "none" or "iso8601"' % timestamp_format)
factory.set_parser_defaults(timestamp_parser=timestamp_parser)
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