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updating customizations/utils #9817

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updating customizations/utils #9817

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9071e49
updating customizations/utils
varungovinda Oct 27, 2025
4971af5
refactor
varungovinda Oct 31, 2025
6d05f5b
Add changelog entry
AndrewAsseily Nov 4, 2025
637de17
Remove unnecessary blank line in utils.py
AndrewAsseily Nov 6, 2025
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19 changes: 12 additions & 7 deletions awscli/customizations/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,9 @@
import sys
import xml

from botocore.exceptions import ClientError
from botocore.exceptions import ClientError, UnknownRegionError
from botocore.loaders import Loader
from botocore.regions import EndpointResolver

from awscli.customizations.exceptions import ParamValidationError

Expand Down Expand Up @@ -208,12 +210,15 @@ def uni_print(statement, out_file=None):
def get_policy_arn_suffix(region):
"""Method to return region value as expected by policy arn"""
region_string = region.lower()
if region_string.startswith("cn-"):
return "aws-cn"
elif region_string.startswith("us-gov"):
return "aws-us-gov"
else:
return "aws"
loader = Loader()
endpoints_data = loader.load_data('endpoints')
resolver = EndpointResolver(endpoints_data)

try:
return resolver.get_partition_for_region(region_string)
except UnknownRegionError:
# Fallback to 'aws' if region is not found
return 'aws'


def get_shape_doc_overview(shape):
Expand Down
1 change: 1 addition & 0 deletions tests/unit/customizations/test_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,7 @@ def test_get_policy_arn_suffix(self):
self.assertEqual("aws", utils.get_policy_arn_suffix("us-east-1"))
self.assertEqual("aws", utils.get_policy_arn_suffix("sa-east-1"))
self.assertEqual("aws", utils.get_policy_arn_suffix("ap-south-1"))
self.assertEqual("aws-eusc", utils.get_policy_arn_suffix("eusc-de-east-1"))


class TestGetShapeDocOverview(unittest.TestCase):
Expand Down
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