docstr: Sets the default sequential colorscale for positive values.
  Note that `autocolorscale` must be true for this attribute to
  work.
  
  The 'sequential' property is a colorscale and may be
  specified as:
    - A list of colors that will be spaced evenly to create the colorscale.
      Many predefined colorscale lists are included in the sequential, diverging,
      and cyclical modules in the plotly.colors package.
    - A list of 2-element lists where the first element is the
      normalized color level value (starting at 0 and ending at 1),
      and the second item is a valid color string.
      (e.g. [[0, 'green'], [0.5, 'red'], [1.0, 'rgb(0, 0, 255)']])
    - One of the following named colorscales:
          ['aggrnyl', 'agsunset', 'algae', 'amp', 'armyrose', 'balance',
           'blackbody', 'bluered', 'blues', 'blugrn', 'bluyl', 'brbg',
           'brwnyl', 'bugn', 'bupu', 'burg', 'burgyl', 'cividis', 'curl',
           'darkmint', 'deep', 'delta', 'dense', 'earth', 'edge', 'electric',
           'emrld', 'fall', 'geyser', 'gnbu', 'gray', 'greens', 'greys',
           'haline', 'hot', 'hsv', 'ice', 'icefire', 'inferno', 'jet',
           'magenta', 'magma', 'matter', 'mint', 'mrybm', 'mygbm', 'oranges',
           'orrd', 'oryel', 'oxy', 'peach', 'phase', 'picnic', 'pinkyl',
           'piyg', 'plasma', 'plotly3', 'portland', 'prgn', 'pubu', 'pubugn',
           'puor', 'purd', 'purp', 'purples', 'purpor', 'rainbow', 'rdbu',
           'rdgy', 'rdpu', 'rdylbu', 'rdylgn', 'redor', 'reds', 'solar',
           'spectral', 'speed', 'sunset', 'sunsetdark', 'teal', 'tealgrn',
           'tealrose', 'tempo', 'temps', 'thermal', 'tropic', 'turbid',
           'turbo', 'twilight', 'viridis', 'ylgn', 'ylgnbu', 'ylorbr',
           'ylorrd'].
      Appending '_r' to a named colorscale reverses it.
  
  Returns
  -------
  str
code: def sequential(self):
      """
      Sets the default sequential colorscale for positive values.
      Note that `autocolorscale` must be true for this attribute to
      work.
  
      The 'sequential' property is a colorscale and may be
      specified as:
        - A list of colors that will be spaced evenly to create the colorscale.
          Many predefined colorscale lists are included in the sequential, diverging,
          and cyclical modules in the plotly.colors package.
        - A list of 2-element lists where the first element is the
          normalized color level value (starting at 0 and ending at 1),
          and the second item is a valid color string.
          (e.g. [[0, 'green'], [0.5, 'red'], [1.0, 'rgb(0, 0, 255)']])
        - One of the following named colorscales:
              ['aggrnyl', 'agsunset', 'algae', 'amp', 'armyrose', 'balance',
               'blackbody', 'bluered', 'blues', 'blugrn', 'bluyl', 'brbg',
               'brwnyl', 'bugn', 'bupu', 'burg', 'burgyl', 'cividis', 'curl',
               'darkmint', 'deep', 'delta', 'dense', 'earth', 'edge', 'electric',
               'emrld', 'fall', 'geyser', 'gnbu', 'gray', 'greens', 'greys',
               'haline', 'hot', 'hsv', 'ice', 'icefire', 'inferno', 'jet',
               'magenta', 'magma', 'matter', 'mint', 'mrybm', 'mygbm', 'oranges',
               'orrd', 'oryel', 'oxy', 'peach', 'phase', 'picnic', 'pinkyl',
               'piyg', 'plasma', 'plotly3', 'portland', 'prgn', 'pubu', 'pubugn',
               'puor', 'purd', 'purp', 'purples', 'purpor', 'rainbow', 'rdbu',
               'rdgy', 'rdpu', 'rdylbu', 'rdylgn', 'redor', 'reds', 'solar',
               'spectral', 'speed', 'sunset', 'sunsetdark', 'teal', 'tealgrn',
               'tealrose', 'tempo', 'temps', 'thermal', 'tropic', 'turbid',
               'turbo', 'twilight', 'viridis', 'ylgn', 'ylgnbu', 'ylorbr',
               'ylorrd'].
          Appending '_r' to a named colorscale reverses it.
  
      Returns
      -------
      str
      """
      return self["sequential"]
  
file_path: plotly.py/packages/python/plotly/plotly/graph_objs/layout/_colorscale.py
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 3 for calling the Colorscale obj's underlying member method code with example usage: obj.sequential() and returns: self