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pipda.operator

module

pipda.operator

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Provide operators

Classes
Functions
class

pipda.operator.OperatorCall(op_func, op_name, *operands)

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Bases
pipda.expression.Expression

The operator call

Parameters
  • op_func — The function to handle the call
  • op_name (str) — The name of the operator
Methods
  • __array_ufunc__(ufunc, method, *inputs, **kwargs) (FunctionCall) — Allow numpy ufunc to work on Expression objects</>
  • __getattr__(name) (ReferenceAttr) — Whenever expr.attr is encountered,return a ReferenceAttr object </>
  • __getitem__(item) (ReferenceItem) — Whenever expr[item] is encountered,return a ReferenceAttr object </>
  • __hash__() (int) — Make it hashable</>
  • __index__() — Allow Expression object to work as index or part of slice</>
  • __iter__() — Forbiden iterating on Expression objects</>
  • __str__() — String representation of the operator call</>
method

__array_ufunc__(ufunc, method, *inputs, **kwargs) → FunctionCall

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Allow numpy ufunc to work on Expression objects

method

__hash__() → int

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Make it hashable

method

__getattr__(name) → ReferenceAttr

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Whenever expr.attr is encountered,return a ReferenceAttr object

method

__getitem__(item) → ReferenceItem

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Whenever expr[item] is encountered,return a ReferenceAttr object

method

__index__()

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Allow Expression object to work as index or part of slice

method

__iter__()

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Forbiden iterating on Expression objects

If it is happening, probably wrong usage of functions/verbs

method

__str__()

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String representation of the operator call

class

pipda.operator.Operator()

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Defines the operators

By default, it inherits the operator from the builtin operator library

You can define you own operators by subclass this class and decorated it using register_operator.

Examples 
>>> @register_operator>>> class MyOperator(Operator):
>>>     def add(self, x, y):
>>>         return x * y
function

pipda.operator.register_operator(opclass)

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Register a operator class

Can be worked as a decorator 

>>> @register_operator
>>> class MyOperator(Operator):
>>>     ...

Parameters
  • opclass — A subclass
Returns

The opclass