XL_TICK_LABEL_POSITION

Specifies the position of tick-mark labels on a chart axis.

Example:

from pptx.enum.chart import XL_TICK_LABEL_POSITION

category_axis = chart.category_axis
category_axis.tick_label_position = XL_TICK_LABEL_POSITION.LOW

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HIGH

Top or right side of the chart.

LOW

Bottom or left side of the chart.

NEXT_TO_AXIS

Next to axis (where axis is not at either side of the chart).

NONE

No tick labels.