decorative_secrets.utilities
get_logger
get_logger(
name: str | None = None,
level: int | None = None,
formatter: (
logging.Formatter
| type[logging.Formatter]
| str
| None
) = None,
stream: (
typing.TextIO | pathlib.Path | str | None
) = None,
*,
propagate: bool | None = None
) -> logging.Logger
Get a non-blocking logger.
Parameters:
-
name(str | None, default:None) –Logger name, typically the
__name__of the calling module. -
level(int | None, default:None) –Optional log level to set on the logger and handlers. If not specified, defaults to
logging.INFOif creating a new logger, otherwise uses the existing logger's level. -
formatter(logging.Formatter | type[logging.Formatter] | str | None, default:None) –Optional formatter to use for the logger. Can be an instance of
logging.Formatter, a subclass oflogging.Formatter, or a format string. -
propagate(bool | None, default:None) –Whether the logger should propagate messages to the root logger. If
None(the default), propagation is left unchanged for an existing logger and defaults toTruefor a new one. -
stream(typing.TextIO | pathlib.Path | str | None, default:None) –A file-like object or path to write the log to.
Example
import logging
import sys
from decorative_secrets.utilities import get_logger
log: logging.Logger = get_logger(
__name__,
formatter="%(asctime)s [%(levelname)s] %(message)s",
stream=sys.stdout,
)
Source code in src/decorative_secrets/utilities.py
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iscoroutinefunction
iscoroutinefunction(function: typing.Any) -> bool
An adaptation of asyncio.iscoroutinefunction
Source code in src/decorative_secrets/utilities.py
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as_tuple
as_tuple(
function: collections.abc.Callable[
...,
collections.abc.Iterable[typing.Any]
| collections.abc.Awaitable[
collections.abc.Iterable[typing.Any]
],
],
) -> collections.abc.Callable[..., typing.Any]
This is a decorator which will return an iterable as a tuple.
Examples:
from decorative_secrets.utilities import as_tuple
@as_tuple
def get_numbers() -> Iterable[int]:
yield 1
yield 2
yield 3
assert get_numbers() == (1, 2, 3)
Source code in src/decorative_secrets/utilities.py
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as_str
as_str(
function: None = None, separator: str = ""
) -> collections.abc.Callable[
..., collections.abc.Callable[..., str]
]
as_str(
function: collections.abc.Callable[
..., collections.abc.Iterable[str]
] = ...,
separator: str = "",
) -> collections.abc.Callable[..., str]
as_str(
function: (
collections.abc.Callable[
..., collections.abc.Iterable[str]
]
| collections.abc.Awaitable[
collections.abc.Iterable[typing.Any]
]
| None
) = None,
separator: str = "",
) -> (
collections.abc.Callable[
..., collections.abc.Callable[..., str]
]
| collections.abc.Callable[..., str]
)
This decorator causes a function yielding an iterable of strings to
return a single string with the elements joined by the specified
`separator`.
Parameters:
function: The function to decorate. If `None`, a decorating
function is returned.
separator: The string used to join the iterable elements.
Returns:
A decorator which joins the iterable elements into a single string.
Examples:
```python
from decorative_secrets.utilities import as_str
@as_str(separator=", ")
def get_fruits() -> Iterable[str]:
yield "apple"
yield "banana"
yield "cherry"
assert get_fruits() == "apple, banana, cherry"
```
```python
from decorative_secrets.utilities import as_str
@as_str
def get_fruits() -> Iterable[str]:
yield "apple
" yield "banana " yield "cherry"
assert get_fruits() == "apple
banana cherry" ```
Source code in src/decorative_secrets/utilities.py
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as_dict
as_dict(
function: collections.abc.Callable[
...,
collections.abc.Iterable[
tuple[typing.Any, typing.Any]
]
| collections.abc.Awaitable[
collections.abc.Iterable[
tuple[typing.Any, typing.Any]
]
],
],
) -> collections.abc.Callable[..., typing.Any]
This is a decorator which will return an iterable of key/value pairs as a dictionary.
Examples:
from decorative_secrets.utilities import as_dict
@as_dict
def get_settings() -> Iterable[tuple[str, Any]]:
yield ("host", "localhost")
yield ("port", 8080)
yield ("debug", True)
assert get_settings() == (
{"host": "localhost", "port": 8080, "debug": True}
)
Source code in src/decorative_secrets/utilities.py
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as_iter
as_iter(
function: collections.abc.Callable[
..., collections.abc.Iterable[typing.Any]
],
) -> collections.abc.Callable[..., typing.Any]
This is a decorator which will return an iterator for a function yielding an iterable.
Examples:
from decorative_secrets.utilities import as_iter
from collections.abc import Iterator
@as_iter
def get_settings() -> Iterable[tuple[str, Any]]:
yield ("host", "localhost")
yield ("port", 8080)
yield ("debug", True)
assert issubclass(get_settings(), Iterator)
Source code in src/decorative_secrets/utilities.py
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warn_retry_hook
warn_retry_hook(
error: Exception,
attempt_number: int,
*args: typing.Any,
**kwargs: typing.Any
) -> bool
This is a retry hook which will issue a warning and retry number whenever an error occurs.
Source code in src/decorative_secrets/utilities.py
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create_log_warning_retry_hook
create_log_warning_retry_hook(
logger: (
logging.Logger
| collections.abc.Callable[[], logging.Logger]
),
) -> decorative_secrets.utilities.RetryHook
This factory creates a retry hook which logs warning using the provided logger.
Parameters:
-
logger(logging.Logger | collections.abc.Callable[[], logging.Logger]) –The logger to use for logging warnings, or a callable which
Source code in src/decorative_secrets/utilities.py
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create_async_log_warning_retry_hook
create_async_log_warning_retry_hook(
logger: logging.Logger,
) -> decorative_secrets.utilities.AsyncRetryHook
This factory creates an async retry hook which logs warning using the provided logger.
!!! Note Please make sure to use a non-blocking logger .
Parameters:
-
logger(logging.Logger) –The logger to use for logging warnings.
Source code in src/decorative_secrets/utilities.py
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retry
retry(
errors: tuple[type[Exception], ...],
retry_hook: (
decorative_secrets.utilities.RetryHook
| decorative_secrets.utilities.AsyncRetryHook
) = decorative_secrets.utilities._default_retry_hook,
number_of_attempts: int = 2,
) -> collections.abc.Callable
This is a decorator which will retry a function a specified number of times, with exponential backoff, if it raises one of the specified errors types.
Parameters:
-
errors(tuple[type[Exception], ...]) –A tuple of exception types which should trigger a retry.
-
retry_hook(decorative_secrets.utilities.RetryHook | decorative_secrets.utilities.AsyncRetryHook, default:decorative_secrets.utilities._default_retry_hook) –A function which is called with the exception instance (optionally) and an attempt number when an error occurs. If this function returns
False, the exception is re-raised and no further retries are attempted. -
number_of_attempts(int, default:2) –The total number of attempts to make, including the initial attempt.
Source code in src/decorative_secrets/utilities.py
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timeout
timeout(
seconds: float, *, use_signals: bool | None = None
) -> collections.abc.Callable[
[collections.abc.Callable], collections.abc.Callable
]
This is a decorator which enforces a maximum execution time on the
decorated function. If the function does not return within seconds,
a TimeoutError is raised.
This works for both synchronous and asynchronous functions:
- Asynchronous functions are bounded using
asyncio.wait, which cancels the coroutine on timeout.asyncio.waitis used in preference toasyncio.wait_forso the timeout does not rely oncurrent_task(), which is unavailable once a running loop has been patched bynest_asyncio. - Synchronous functions are bounded using
signal.SIGALRMwhen it is available, the call originates from the main thread, and no othertimeoutis already active, which interrupts the function in place. - Otherwise (for example on Windows, when called from a non-main
thread, or when nested inside another
timeout), synchronous functions are run in a daemon thread. The daemon thread cannot be killed, so it continues running to completion after theTimeoutErroris raised; if it subsequently raises, that exception is logged rather than silently discarded. A daemon thread is used so that such a call cannot block interpreter shutdown.
Parameters:
-
seconds(float) –The maximum number of seconds to allow. Must be greater than zero.
-
use_signals(bool | None, default:None) –If
False, theSIGALRMstrategy is passed over in favor of the daemon-thread strategy even whenSIGALRMis available. IfTrueorNone, theSIGALRMstrategy is used when available, and the daemon-thread strategy is used otherwise.
Examples:
from time import sleep
from decorative_secrets.utilities import timeout
@timeout(0.1)
def slow() -> str:
sleep(1)
return "done"
try:
slow()
except TimeoutError:
print("timed out")
Source code in src/decorative_secrets/utilities.py
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get_exception_text
get_exception_text() -> str
When called within an exception, this function returns a text
representation of the error matching what is found in
traceback.print_exception, but is returned as a string value rather than
printing.
Source code in src/decorative_secrets/utilities.py
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