text: from plotly.basedatatypes import BaseLayoutHierarchyType as _BaseLayoutHierarchyType
  import copy as _copy
  
  
  class Title(_BaseLayoutHierarchyType):
  
      # class properties
      # --------------------
      _parent_path_str = "layout.xaxis"
      _path_str = "layout.xaxis.title"
      _valid_props = {"font", "standoff", "text"}
  
      # font
      # ----
      @property
      def font(self):
          """
          Sets this axis' title font. Note that the title's font used to
          be customized by the now deprecated `titlefont` attribute.
  
          The 'font' property is an instance of Font
          that may be specified as:
            - An instance of :class:`plotly.graph_objs.layout.xaxis.title.Font`
            - A dict of string/value properties that will be passed
              to the Font constructor
  
              Supported dict properties:
  
                  color
  
                  family
                      HTML font family - the typeface that will be
                      applied by the web browser. The web browser
                      will only be able to apply a font if it is
                      available on the system which it operates.
                      Provide multiple font families, separated by
                      commas, to indicate the preference in which to
                      apply fonts if they aren't available on the
                      system. The Chart Studio Cloud (at
                      https://chart-studio.plotly.com or on-premise)
                      generates images on a server, where only a
                      select number of fonts are installed and
                      supported. These include "Arial", "Balto",
                      "Courier New", "Droid Sans",, "Droid Serif",
                      "Droid Sans Mono", "Gravitas One", "Old
                      Standard TT", "Open Sans", "Overpass", "PT Sans
                      Narrow", "Raleway", "Times New Roman".
                  size
  
          Returns
          -------
          plotly.graph_objs.layout.xaxis.title.Font
          """
          return self["font"]
  
      @font.setter
      def font(self, val):
          self["font"] = val
  
      # standoff
      # --------
      @property
      def standoff(self):
          """
          Sets the standoff distance (in px) between the axis labels and
          the title text The default value is a function of the axis tick
          labels, the title `font.size` and the axis `linewidth`. Note
          that the axis title position is always constrained within the
          margins, so the actual standoff distance is always less than
          the set or default value. By setting `standoff` and turning on
          `automargin`, plotly.js will push the margins to fit the axis
          title at given standoff distance.
  
          The 'standoff' property is a number and may be specified as:
            - An int or float in the interval [0, inf]
  
          Returns
          -------
          int|float
          """
          return self["standoff"]
  
      @standoff.setter
      def standoff(self, val):
          self["standoff"] = val
  
      # text
      # ----
      @property
      def text(self):
          """
          Sets the title of this axis. Note that before the existence of
          `title.text`, the title's contents used to be defined as the
          `title` attribute itself. This behavior has been deprecated.
  
          The 'text' property is a string and must be specified as:
            - A string
            - A number that will be converted to a string
  
          Returns
          -------
          str
          """
          return self["text"]
  
      @text.setter
      def text(self, val):
          self["text"] = val
  
      # Self properties description
      # ---------------------------
      @property
      def _prop_descriptions(self):
          return """\
          font
              Sets this axis' title font. Note that the title's font
              used to be customized by the now deprecated `titlefont`
              attribute.
          standoff
              Sets the standoff distance (in px) between the axis
              labels and the title text The default value is a
              function of the axis tick labels, the title `font.size`
              and the axis `linewidth`. Note that the axis title
              position is always constrained within the margins, so
              the actual standoff distance is always less than the
              set or default value. By setting `standoff` and turning
              on `automargin`, plotly.js will push the margins to fit
              the axis title at given standoff distance.
          text
              Sets the title of this axis. Note that before the
              existence of `title.text`, the title's contents used to
              be defined as the `title` attribute itself. This
              behavior has been deprecated.
          """
  
      def __init__(self, arg=None, font=None, standoff=None, text=None, **kwargs):
          """
          Construct a new Title object
  
          Parameters
          ----------
          arg
              dict of properties compatible with this constructor or
              an instance of
              :class:`plotly.graph_objs.layout.xaxis.Title`
          font
              Sets this axis' title font. Note that the title's font
              used to be customized by the now deprecated `titlefont`
              attribute.
          standoff
              Sets the standoff distance (in px) between the axis
              labels and the title text The default value is a
              function of the axis tick labels, the title `font.size`
              and the axis `linewidth`. Note that the axis title
              position is always constrained within the margins, so
              the actual standoff distance is always less than the
              set or default value. By setting `standoff` and turning
              on `automargin`, plotly.js will push the margins to fit
              the axis title at given standoff distance.
          text
              Sets the title of this axis. Note that before the
              existence of `title.text`, the title's contents used to
              be defined as the `title` attribute itself. This
              behavior has been deprecated.
  
          Returns
          -------
          Title
          """
          super(Title, self).__init__("title")
  
          if "_parent" in kwargs:
              self._parent = kwargs["_parent"]
              return
  
          # Validate arg
          # ------------
          if arg is None:
              arg = {}
          elif isinstance(arg, self.__class__):
              arg = arg.to_plotly_json()
          elif isinstance(arg, dict):
              arg = _copy.copy(arg)
          else:
              raise ValueError(
                  """\
  The first argument to the plotly.graph_objs.layout.xaxis.Title 
  constructor must be a dict or 
  an instance of :class:`plotly.graph_objs.layout.xaxis.Title`"""
              )
  
          # Handle skip_invalid
          # -------------------
          self._skip_invalid = kwargs.pop("skip_invalid", False)
          self._validate = kwargs.pop("_validate", True)
  
          # Populate data dict with properties
          # ----------------------------------
          _v = arg.pop("font", None)
          _v = font if font is not None else _v
          if _v is not None:
              self["font"] = _v
          _v = arg.pop("standoff", None)
          _v = standoff if standoff is not None else _v
          if _v is not None:
              self["standoff"] = _v
          _v = arg.pop("text", None)
          _v = text if text is not None else _v
          if _v is not None:
              self["text"] = _v
  
          # Process unknown kwargs
          # ----------------------
          self._process_kwargs(**dict(arg, **kwargs))
  
          # Reset skip_invalid
          # ------------------
          self._skip_invalid = False
  