pip install mpldatacursor

try:  # Again, older versions of mpl  return formatter.pprint_val(x)except AttributeError:  # 3.3.0 or later  return formatter.format_data_short(x)

python setup.py install

mpldatacursor   convenience.py   datacursor.py   pick_info.py   __init__.py

def datacursor(artists=None, axes=None, **kwargs):  """  Create an interactive data cursor for the specified artists or specified  axes. The data cursor displays information about a selected artist in a  "popup" annotation box.  If a specific sequence of artists is given, only the specified artists will  be interactively selectable. Otherwise, all manually-plotted artists in  *axes* will be used (*axes* defaults to all axes in all figures).  Parameters  -----------  artists : a matplotlib artist or sequence of artists, optional    The artists to make selectable and display information for. If this is    not specified, then all manually plotted artists in `axes` will be    used.  axes : a matplotlib axes of sequence of axes, optional    The axes to selected artists from if a sequence of artists is not    specified. If `axes` is not specified, then all available axes in all    figures will be used.  tolerance : number, optional    The radius (in points) that the mouse click must be within to select    the artist. Default: 5 points.  formatter : callable, optional    A function that accepts arbitrary kwargs and returns a string that will    be displayed with annotate. Often, it is convienent to pass in the    format method of a template string, e.g.    ``formatter="{label}".format``.    Keyword arguments passed in to the `formatter` function:      `x`, `y` : floats        The x and y data coordinates of the clicked point      `event` : a matplotlib ``PickEvent``        The pick event that was fired (note that the selected        artist can be accessed through ``event.artist``).      `label` : string or None        The legend label of the selected artist.      `ind` : list of ints or None        If the artist has "subitems" (e.g. points in a scatter or        line plot), this will be a list of the item(s) that were        clicked on. If the artist does not have "subitems", this        will be None. Note that this is always a list, even when        a single item is selected.    Some selected artists may supply additional keyword arguments that    are not always present, for example:      `z` : number        The "z" (usually color or array) value, if present. For an        ``AxesImage`` (as created by ``imshow``), this will be the        uninterpolated array value at the point clicked. For a        ``PathCollection`` (as created by ``scatter``) this will be the        "c" value if an array was passed to "c".      `i`, `j` : ints        The row, column indicies of the selected point for an        ``AxesImage`` (as created by ``imshow``)      `s` : number        The size of the selected item in a ``PathCollection`` if a size        array is specified.      `c` : number        The array value displayed as color for a ``PathCollection``        if a "c" array is specified (identical to "z").      `point_label` : list        If `point_labels` is given when the data cursor is initialized        and the artist has "subitems", this will be a list of the items        of `point_labels` that correspond to the selected artists.        Note that this is always a list, even when a single artist is        selected.      `width`, `height`, `top`, `bottom` : numbers        The parameters for ``Rectangle`` artists (e.g. bar plots).  point_labels : sequence or dict, optional    For artists with "subitems" (e.g. Line2D's), the item(s) of    `point_labels` corresponding to the selected "subitems" of the artist    will be passed into the formatter function as the "point_label" kwarg.    If a single sequence is given, it will be used for all artists with    "subitems". Alternatively, a dict of artist:sequence pairs may be given    to match an artist to the correct series of point labels.  display : {"one-per-axes", "single", "multiple"}, optional    Controls whether more than one annotation box will be shown.    Default: "one-per-axes"  draggable : boolean, optional    Controls whether or not the annotation box will be interactively    draggable to a new location after being displayed. Defaults to False.  hover : boolean, optional    If True, the datacursor will "pop up" when the mouse hovers over an    artist. Defaults to False. Enabling hover also sets    `display="single"` and `draggable=False`.  props_override : function, optional    If specified, this function customizes the parameters passed into the    formatter function and the x, y location that the datacursor "pop up"    "points" to. This is often useful to make the annotation "point" to a    specific side or corner of an artist, regardless of the position    clicked. The function is passed the same kwargs as the `formatter`    function and is expected to return a dict with at least the keys "x"    and "y" (and probably several others).    Expected call signature: `props_dict = props_override(**kwargs)`  keybindings : boolean or dict, optional    By default, the keys "d" and "t" will be bound to deleting/hiding all    annotation boxes and toggling interactivity for datacursors,    respectively. If keybindings is False, the ability to hide/toggle    datacursors interactively will be disabled. Alternatively, a dict of    the form {'hide':'somekey', 'toggle':'somekey'} may specified to    customize the keyboard shortcuts.  date_format : string, optional    The strftime-style formatting string for dates. Used only if the x or y    axes have been set to display dates. Defaults to "%x %X".  display_button: int, optional    The mouse button that will triggers displaying an annotation box.    Defaults to 1, for left-clicking. (Common options are 1:left-click,    2:middle-click, 3:right-click)  hide_button: int or None, optional    The mouse button that triggers hiding the selected annotation box.    Defaults to 3, for right-clicking. (Common options are 1:left-click,    2:middle-click, 3:right-click, None:hiding disabled)  keep_inside : boolean, optional    Whether or not to adjust the x,y offset to keep the text box inside the    figure. This option has no effect on draggable datacursors. Defaults to    True. Note: Currently disabled on OSX and NbAgg/notebook backends.  **kwargs : additional keyword arguments, optional    Additional keyword arguments are passed on to annotate.  Returns  -------  dc : A ``mpldatacursor.DataCursor`` instance  """

import matplotlib.pyplot as pltimport numpy as npfrom mpldatacursor import datacursordata = np.outer(range(10), range(1, 5))fig, ax = plt.subplots()lines = ax.plot(data)ax.set_title('Click somewhere on a line')datacursor()plt.show()

import matplotlib.pyplot as pltimport numpy as npfrom mpldatacursor import datacursorfig, ax = plt.subplots()line1 = ax.plot([1,3])line2 = ax.plot([1,2])ax.set_title('Click somewhere on a line')datacursor(line1)plt.show()