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9 changes: 6 additions & 3 deletions apitools/base/py/credentials_lib.py
Original file line number Diff line number Diff line change
Expand Up @@ -250,7 +250,9 @@ def __init__(self, scopes=None, service_account_name='default', **kwds):
# identified these scopes in the same execution. However, the
# available scopes don't change once an instance is created,
# so there is no reason to perform more than one query.
self.__service_account_name = service_account_name
self.__service_account_name = six.ensure_text(
service_account_name,
encoding='utf-8',)
cached_scopes = None
cache_filename = kwds.get('cache_filename')
if cache_filename:
Expand Down Expand Up @@ -317,7 +319,8 @@ def _WriteCacheFile(self, cache_filename, scopes):
scopes: Scopes for the desired credentials.
"""
# Credentials metadata dict.
creds = {'scopes': sorted(list(scopes)),
scopes = sorted([six.ensure_text(scope) for scope in scopes])
creds = {'scopes': scopes,
'svc_acct_name': self.__service_account_name}
creds_str = json.dumps(creds)
cache_file = _MultiProcessCacheFile(cache_filename)
Expand Down Expand Up @@ -352,7 +355,7 @@ def _ScopesFromMetadataServer(self, scopes):
def GetServiceAccount(self, account):
relative_url = 'instance/service-accounts'
response = _GceMetadataRequest(relative_url)
response_lines = [line.rstrip('/\n\r')
response_lines = [six.ensure_text(line).rstrip(u'/\n\r')
for line in response.readlines()]
return account in response_lines

Expand Down