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Config

pynapple.core.config

This module controls the pynapple configurations.

Backend configuration

By default, pynapple core functions are compiled with Numba. It is possible to change the backend to Jax through the pynajax package.

While numba core functions runs on CPU, the jax backend allows pynapple to use GPU accelerated core functions. For some core functions, the jax backend offers speed gains (provided that Jax runs on the GPU).

See the example below to update the backend. Don't forget to install pynajax.

import pynapple as nap
import numpy as np
nap.nap_config.set_backend("jax") # Default option is 'numba'.

You can view the current backend with 

>>> print(nap.nap_config.backend)
'jax'

Warnings configuration

pynapple gives warnings that can be helpful to debug. For example when passing time indexes that are not sorted:

>>> import pynapple as nap
>>> t = [0, 2, 1]
>>> nap.Ts(t)
UserWarning: timestamps are not sorted
  warn("timestamps are not sorted", UserWarning)
Time (s)
0.0
1.0
2.0
shape: 3

pynapple's warnings can be suppressed :

>>> nap.nap_config.suppress_time_index_sorting_warnings = True
>>> nap.Ts(t=t)
Time (s)
0.0
1.0
2.0
shape: 3

PynappleConfig

A class to hold configuration settings for pynapple.

This class includes all configuration settings that control the behavior of pynapple. It offers a structured way to access and modify settings.

Attributes:

Name Type Description
backend str

Current pynapple backend. Options are ('numba' [default], 'jax')
suppress_conversion_warnings boolean

Determines whether to suppress warnings when automatically converting non-NumPy array-like objects to NumPy arrays. This is useful for users who frequently work with array-like objects from other libraries (e.g., JAX, TensorFlow) and prefer not to receive warnings for automatic conversions. Defaults to False, which means warnings will be shown.
suppress_time_index_sorting_warnings boolean

Control the warning raised when passing a non-sorted array for time index. It can be useful to catch data where timestamps are not properly sorted before using pynapple.
time_index_precision int

Number of decimal places to round time index. Pynapple's precision is set by default to 9.
Source code in pynapple/core/config.py 
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class PynappleConfig:
    """
    A class to hold configuration settings for pynapple.

    This class includes all configuration settings that control the behavior of
    pynapple. It offers a structured way to access and modify settings.

    Attributes
    ----------
    backend : str
        Current pynapple backend. Options are ('numba' [default], 'jax')
    suppress_conversion_warnings : boolean
        Determines whether to suppress warnings when automatically converting non-NumPy
        array-like objects to NumPy arrays. This is useful for users who frequently work with array-like objects from other
        libraries (e.g., JAX, TensorFlow) and prefer not to receive warnings for automatic
        conversions. Defaults to False, which means warnings will be shown.
    suppress_time_index_sorting_warnings : boolean
        Control the warning raised when passing a non-sorted array for time index.
        It can be useful to catch data where timestamps are not properly sorted before using pynapple.
    time_index_precision : int
        Number of decimal places to round time index. Pynapple's precision is set by default to 9.
    """

    def __init__(self):
        self.suppress_conversion_warnings = False
        self.suppress_time_index_sorting_warnings = False
        self.backend = "numba"

    @property
    def backend(self):
        """
        Pynapple backend. Can be "jax" or "numpy".
        """
        return self._backend

    @backend.setter
    def backend(self, backend):
        self.set_backend(backend)

    def set_backend(self, backend):
        assert backend in ["numba", "jax"], "Options for backend are 'jax' or 'numba'"

        # Try to import pynajax
        if backend == "jax":
            spec = importlib.util.find_spec("pynajax")
            if spec is None:
                warnings.warn(
                    "Package pynajax is not found. Falling back to numba backend. To use the jax backend for pynapple, please install pynajax",
                    stacklevel=2,
                )
                self._backend = "numba"
            else:
                self._backend = "jax"
        else:
            self._backend = "numba"

    @property
    def time_index_precision(self):
        """Precision for the time index

        Returns
        -------
        Int
            Parameter for the `numpy.around` function when rounding time index
        """
        return 9

    @property
    def suppress_conversion_warnings(self):
        """
        Gets or sets the suppression state for conversion warnings. When set to True,
        warnings for automatic conversions of non-NumPy array-like objects or pynapple objects to NumPy arrays
        are suppressed. Ensures that only boolean values are assigned.
        """
        return self._suppress_conversion_warnings

    @suppress_conversion_warnings.setter
    def suppress_conversion_warnings(self, value):
        if not isinstance(value, bool):
            raise ValueError("suppress_conversion_warnings must be a boolean value.")
        self._suppress_conversion_warnings = value

    @property
    def suppress_time_index_sorting_warnings(self):
        """
        Gets or sets the suppression state for sorting time index. When set to True,
        warnings for sorting are suppressed. Ensures that only boolean values are assigned.
        """
        return self._suppress_time_index_sorting_warnings

    @suppress_time_index_sorting_warnings.setter
    def suppress_time_index_sorting_warnings(self, value):
        if not isinstance(value, bool):
            raise ValueError(
                "suppress_time_index_sorting_warnings must be a boolean value."
            )
        self._suppress_time_index_sorting_warnings = value

    def restore_defaults(self):
        """
        Set all configuration settings to their default values.

        This method can be used to easily set/reset the configuration state of pynapple
        to its initial, default configuration.
        """
        self.suppress_conversion_warnings = False
        self.suppress_time_index_sorting_warnings = False

backend property writable 

backend

Pynapple backend. Can be "jax" or "numpy".

time_index_precision property 

time_index_precision

Precision for the time index

Returns:

Type Description
Int

Parameter for the numpy.around function when rounding time index

suppress_conversion_warnings property writable 

suppress_conversion_warnings

Gets or sets the suppression state for conversion warnings. When set to True, warnings for automatic conversions of non-NumPy array-like objects or pynapple objects to NumPy arrays are suppressed. Ensures that only boolean values are assigned.

suppress_time_index_sorting_warnings property writable 

suppress_time_index_sorting_warnings

Gets or sets the suppression state for sorting time index. When set to True, warnings for sorting are suppressed. Ensures that only boolean values are assigned.

restore_defaults 

restore_defaults()

Set all configuration settings to their default values.

This method can be used to easily set/reset the configuration state of pynapple to its initial, default configuration.

Source code in pynapple/core/config.py 
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def restore_defaults(self):
    """
    Set all configuration settings to their default values.

    This method can be used to easily set/reset the configuration state of pynapple
    to its initial, default configuration.
    """
    self.suppress_conversion_warnings = False
    self.suppress_time_index_sorting_warnings = False