class_docstr: The container of all `.Spine`\s in an Axes.
  
  The interface is dict-like mapping names (e.g. 'left') to `.Spine` objects.
  Additionally, it implements some pandas.Series-like features like accessing
  elements by attribute::
  
      spines['top'].set_visible(False)
      spines.top.set_visible(False)
  
  Multiple spines can be addressed simultaneously by passing a list::
  
      spines[['top', 'right']].set_visible(False)
  
  Use an open slice to address all spines::
  
      spines[:].set_visible(False)
  
  The latter two indexing methods will return a `SpinesProxy` that broadcasts all
  ``set_*()`` and ``set()`` calls to its members, but cannot be used for any other
  operation.
class_docstr_tok: ["The","container","of","all","`",".Spine","`","\\s","in","an","Axes",".","The","interface","is","dict-like","mapping","names","(","e.g",".","'left","'",")","to","`",".Spine","`","objects",".","Additionally",",","it","implements","some","pandas.Series-like","features","like","accessing","elements","by","attribute",":",":","spines","[","'top","'","]",".set_visible","(","False",")","spines.top.set_visible","(","False",")","Multiple","spines","can","be","addressed","simultaneously","by","passing","a","list",":",":","spines","[","[","'top","'",",","'right","'","]","]",".set_visible","(","False",")","Use","an","open","slice","to","address","all","spines",":",":","spines","[",":","]",".set_visible","(","False",")","The","latter","two","indexing","methods","will","return","a","`","SpinesProxy","`","that","broadcasts","all","``","set_","*","(",")","``","and","``","set","(",")","``","calls","to","its","members",",","but","can","not","be","used","for","any","other","operation","."]
code: def __iter__(self):
      return iter(self._dict)
  
imports: from collections.abc import MutableMapping
  import functools
  import numpy
  import matplotlib
  from matplotlib import _api, _docstring
  from matplotlib.artist import allow_rasterization
  import matplotlib.transforms
  import matplotlib.patches
  import matplotlib.path
label_desc: Use image node_id 9 for calling the Spines obj's underlying member method code with example usage: obj.__iter__() and returns: iter