class_docstr: The base class for a first order solver. It defines methods for
  setting a model (giving first order information) and a proximal
  operator
  
  In only deals with verbosing information, and setting parameters
  
  Parameters
  ----------
  step : `float` default=None
      Step-size of the algorithm
  
  tol : `float`, default=0
      The tolerance of the solver (iterations stop when the stopping
      criterion is below it). By default the solver does ``max_iter``
      iterations
  
  max_iter : `int`
      Maximum number of iterations of the solver
  
  verbose : `bool`, default=True
      If `True`, we verbose things, otherwise the solver does not
      print anything (but records information in history anyway)
  
  print_every : `int`, default = 10
      Print history information every time the iteration number is a
      multiple of ``print_every``
  
  record_every : `int`, default = 1
      Information along iteration is recorded in history each time the
      iteration number of a multiple of ``record_every``
  
  Attributes
  ----------
  model : `Model`
      The model to solve
  
  prox : `Prox`
      Proximal operator to solve
  
  dtype : `{'float64', 'float32'}`, default='float64'
      Type of the arrays used. This value is set from model and prox dtypes.
  
  Notes
  -----
  This class should not be used by end-users
docstr: Set proximal operator in the solver
  
  Parameters
  ----------
  prox : `Prox`
      The proximal operator of the penalization function
  
  Returns
  -------
  output : `Solver`
      The solver with given prox
  
  Notes
  -----
  In some solvers, ``set_model`` must be called before
  ``set_prox``, otherwise and error might be raised
docstr_tok: ["Set","proximal","operator","in","the","solver","Parameters","--","--","--","--","--","prox",":","`","Prox","`","The","proximal","operator","of","the","penalization","function","Returns","--","--","--","-","output",":","`","Solver","`","The","solver","with","given","prox","Notes","--","--","-","In","some","solvers",",","``","set_model","``","must","be","called","before","``","set_prox","``",",","otherwise","and","error","might","be","raised"]
code: def set_prox(self, prox: Prox):
      """Set proximal operator in the solver
  
      Parameters
      ----------
      prox : `Prox`
          The proximal operator of the penalization function
  
      Returns
      -------
      output : `Solver`
          The solver with given prox
  
      Notes
      -----
      In some solvers, ``set_model`` must be called before
      ``set_prox``, otherwise and error might be raised
      """
      if not isinstance(prox, Prox):
          raise ValueError(
              "Passed object of class %s is not a "
              "Prox class" % prox.name
          )
      if self.dtype is None or self.model is None:
          raise ValueError("Solver must call set_model before set_prox")
      if prox.dtype != self.dtype:
          prox = prox.astype(self.dtype)
      self._set("prox", prox)
      return self
  
file_path: tick/tick/solver/base/first_order.py
imports: import numpy
  from .None import Solver
  from tick.base_model import Model
  from tick.prox.base import Prox
label_desc: Use image node_id 5 for calling the SolverFirstOrder obj's underlying member method code with example usage: obj.set_prox(prox) and returns: self