ax = sns.boxplot(x="platform", y="total_sales", data=since2012)
plt.ylabel('Суммарные продажи')
plt.xlabel('Платформа')
ax = sns.boxplot(y= 'y')
ax.set_ylim([5, 5])


---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-70-822c47e0a7bf> in <module>
      2 plt.ylabel('Суммарные продажи')
      3 plt.xlabel('Платформа')
----> 4 ax = sns.boxplot(y= 'y')
      5 ax.set_ylim([5, 5])

/opt/conda/lib/python3.7/site-packages/seaborn/categorical.py in boxplot(x, y, hue, data, order, hue_order, orient, color, palette, saturation, width, dodge, fliersize, linewidth, whis, notch, ax, **kwargs)
   2229     plotter = _BoxPlotter(x, y, hue, data, order, hue_order,
   2230                           orient, color, palette, saturation,
-> 2231                           width, dodge, fliersize, linewidth)
   2232
   2233     if ax is None:

/opt/conda/lib/python3.7/site-packages/seaborn/categorical.py in __init__(self, x, y, hue, data, order, hue_order, orient, color, palette, saturation, width, dodge, fliersize, linewidth)
    444                  width, dodge, fliersize, linewidth):
    445
--> 446         self.establish_variables(x, y, hue, data, orient, order, hue_order)
    447         self.establish_colors(color, palette, saturation)
    448

/opt/conda/lib/python3.7/site-packages/seaborn/categorical.py in establish_variables(self, x, y, hue, data, orient, order, hue_order, units)
    153                 if isinstance(input, string_types):
    154                     err = "Could not interpret input '{}'".format(input)
--> 155                     raise ValueError(err)
    156
    157             # Figure out the plotting orientation

ValueError: Could not interpret input 'y'