left_axis.tick_params

Left_axis.tick_params is a method used to modify the appearance of the ticks and tick labels on the y-axis (left side) of a matplotlib plot. This method takes several arguments to customize the tick parameters, such as:

- axis: specify which axis to modify (e.g. 'y' for the y-axis)
- which: specify which ticks to modify (e.g. 'both' for both major and minor ticks)
- direction: specify the direction of the ticks ('in', 'out', or 'inout')
- length: specify the length of the ticks in points
- width: specify the width of the ticks in points
- color: specify the color of the ticks
- labelsize: specify the font size of the tick labels

For example, to make the y-axis ticks longer and thicker with red color and larger tick labels, we can use the following code:

import matplotlib.pyplot as plt

fig, ax = plt.subplots()
left_axis = ax.yaxis

left_axis.tick_params(axis='y', length=10, width=2, color='red', labelsize=12)

This will modify the appearance of the ticks and tick labels on the y-axis of the plot.