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"""For transformating the type of authroity."""
from users_text_manager import AUTHORITY
_mappings = [
(AUTHORITY.READONLY, 'RO'),
(AUTHORITY.READWRITE, 'RW'),
]
class Error(Exception):
"""Error raised by AuthorityStringTransformer."""
pass
def to_string(authority):
"""Transform number authority value to string value.
Args:
authority: Authority in number format.
Return:
Corrosponding authority in string format.
"""
for item in _mappings:
if item[0] == authority:
return item[1]
raise Error('Invalid number.')
def to_number(string):
"""Transform string authority value to number value.
Args:
authority: Authority in string format.
Return:
Corrosponding authority in number format.
"""
for item in _mappings:
if item[1] == string:
return item[0]
raise Error('Invalid string.')
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