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google.appengine.api.datastore.RunInReadOnlyTransactionOptions
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Runs a function inside a read-only datastore transaction.
google . appengine . api . datastore . RunInReadOnlyTransactionOptions (
options , function , * args , ** kwargs
)
A read-only transaction cannot perform writes, but may be able to execute
more efficiently.
Like RunInTransactionOptions
, but with a read-only transaction.
Args
options
TransactionOptions
specifying options (number of retries, etc)
for this transaction
function
a function to be run inside the transaction on all remaining
arguments
*args: positional arguments for function.
**kwargs: keyword arguments for function.
Returns
the function's return value, if any
Raises
TransactionFailedError
, if the transaction could not be committed.
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Last updated 2022-09-30 UTC.
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{"lastModified": "Last updated 2022-09-30 UTC."}
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