Parameter

inspect

class (source)

Parameter(name, kind, *, default=Parameter.empty, annotation=Parameter.empty)

Represents a parameter in a function signature.

Has the following public attributes:

* name : str
    The name of the parameter as a string.
* default : object
    The default value for the parameter if specified.  If the
    parameter has no default value, this attribute is set to
    `Parameter.empty`.
* annotation
    The annotation for the parameter if specified.  If the
    parameter has no annotation, this attribute is set to
    `Parameter.empty`.
* kind
    Describes how argument values are bound to the parameter.
    Possible values: `Parameter.POSITIONAL_ONLY`,
    `Parameter.POSITIONAL_OR_KEYWORD`, `Parameter.VAR_POSITIONAL`,
    `Parameter.KEYWORD_ONLY`, `Parameter.VAR_KEYWORD`.
    Every value has a `description` attribute describing meaning.

Changed in 3.4, 3.5

3.4: In Python 3.3 Parameter objects were allowed to have name set to None if their kind was set to POSITIONAL_ONLY. This is no longer permitted.
3.5: Parameter objects are now picklable and hashable.

Members of Parameter

a

annotation: The annotation for the parameter.

d

default: The default value for the parameter.

e

empty: Marker object for Signature.empty and Parameter.empty.

k

kind: Describes how argument values are bound to the parameter.

n

name: The name of the parameter as a string.

r

replace: Creates a customized copy of the Parameter.

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Parameter

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Members of Parameter

a

d

e

k

n

r

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