reno.components.Operation

class reno.components.Operation(*operands)

Bases: EquationPart

Parent class to represent a mathematical operation in an equation.

Pretty useless by itself, look in reno/ops.py, we use a parent class to make it easier to distinguish/find parts of an equation that are operations.

Methods

__init__(*operands)	Create an operation node involving the passed sub equation parts.
astype(dtype)	Returns a symbolic operation to convert the output of this equation to the specified type.
clip(min, max)	Returns a symbolic operation for enforcing the output is between the passed min and max.
equal(obj)	Returns a symbolic operation for checking equality with passed object.
eval([t, save, force])	'wrap' all operation eval functions so we get better error handling.
find_parts_of_type(search_type[, ...])	Recursively search for all EquationParts in the tree of the specified type.
get_shape()	Get the size of the additional "data" dimension.
get_type()	Get the type of the target output of this equation expression.
is_static()	Convenience shortcut for reno.utils.is_static() - True if this equation doesn't rely on any dynamic values (thus constant), False if it does.
latex(**kwargs)	Get a string of latex representing this op.
mean([axis])	Returns a symbolic operation to find the series-wise mean of the array.
not_equal(obj)	Returns a symbolic operation for checking inequality with passed object.
op_eval(**kwargs)	Any new operations should implement this method.
op_latex(**kwargs)	Output the latex string for this operation.
op_repr()	Get a string representation for the op name/label.
op_types()	Get a list of all defined operations/Operation subclasses.
pt(**refs)	Get a pytensor graph representing this piece of an equation.
pt_str(**refs)	Construct a string containing relevant pytensor code for this piece of the equation.
seek_refs([include_ref_types])	Recursively find a list of all References immediately underneath this part.
series_max()	Returns a symbolic operation to find the series-wise maximum of the array.
series_min()	Returns a symbolic operation to find the series-wise minimum of the array.
sum([axis])	Returns a symbolic operation to find the series-wise sum of the array.

Attributes

OP_REPR	If defined, this is what gets printed as the 'label' for the operation in the repr, and is what's used during parsing.
dtype	The type of each underlying value.
shape	The size of the data dimension, 1 by default.
timeseries	Returns symbolic operation for getting a timeseries view of the data.
non_repr_part_indices	Use this to "hide" a sub_equation_part in the string repr, e.g. if it's important for computation but isn't part of parsing.

Parameters:

operands (list[EquationPart])

OP_REPR = None

If defined, this is what gets printed as the ‘label’ for the operation in the repr, and is what’s used during parsing. Otherwise, just uses class name.

__annotations__ = {}

__module__ = 'reno.components'

__repr__()

Return repr(self).

Return type:

str

eval(t=0, save=False, force=False, **kwargs)

‘wrap’ all operation eval functions so we get better error handling.

Parameters:

• t (int)

• save (bool)

• force (bool)

• kwargs (dict)

Return type:

int | float | ndarray

get_shape()

Get the size of the additional “data” dimension.

Prefer using shape property over directly calling this function.

“Broadcasts” any size 1 dims to a larger dim node if present.

Return type:

int

get_type()

Get the type of the target output of this equation expression.

Prefer using dtype property over directly calling this function.

Return type:

type

latex(**kwargs)

Get a string of latex representing this op.

Wrapper around op_latex, subclasses should override that function as opposed to this one.

Parameters:

kwargs (dict)

Return type:

str

non_repr_part_indices

Use this to “hide” a sub_equation_part in the string repr, e.g. if it’s important for computation but isn’t part of parsing.

op_eval(**kwargs)

Any new operations should implement this method.

Put all evaluation logic in here, as opposed to overriding eval.

Parameters:

kwargs (dict)

Return type:

int | float | ndarray

op_latex(**kwargs)

Output the latex string for this operation. Override this in subclasses.

Parameters:

kwargs (dict)

Return type:

str

classmethod op_repr()

Get a string representation for the op name/label.

Used for printing and parsing.

Return type:

str

static op_types()

Get a list of all defined operations/Operation subclasses.

Return type:

list[type]