%feature("docstring") OT::Poisson
"Poisson distribution.

Available constructors:
    Poisson(*lambda=1.0*)

Parameters
----------
lambda : float, :math:`\lambda > 0`
    Mean and variance value.

Notes
-----
Its probability density function is defined as:

.. math::

    \Prob{X = k} = \frac{\lambda^k}{k!}\;e^{-\lambda}, \,  k \in \Nset

Its first moments are:

.. math::
    :nowrap:

    \begin{eqnarray*}
        \Expect{X} & = & \lambda \\
        \Var{X} & = & sqrt{\lambda}
    \end{eqnarray*}

Examples
--------
Create a distribution:

>>> import openturns as ot
>>> distribution = ot.Poisson(10.0)

Draw a sample:

>>> sample = distribution.getSample(5)"

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%feature("docstring") OT::Poisson::getLambda
"Accessor to the distribution's mean and variance value.

Returns
-------
lambda : float
    Distribution's mean and variance value."

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%feature("docstring") OT::Poisson::setLambda
"Accessor to the distribution's mean and variance value.

Parameters
----------
lambda : float
    Distribution's mean and variance value."
