Python Coding challenge - Day 504| What is the output of the following Python Code?

 

Code Explanation:

1. Import the Matplotlib Library

import matplotlib.pyplot as plt

Imports the pyplot module from matplotlib, commonly used for plotting in Python.

This module provides a MATLAB-like interface for creating plots and figures.

2. Create a Single Subplot

ax = plt.subplot()

Creates a single axes (subplot) and assigns it to the variable ax.

Equivalent to fig, ax = plt.subplots() but shorter when you only need one plot.

This is the area where the plot will be drawn.

3. Plot a Line on the Axes

ax.plot([1, 2, 3], [4, 5, 6], label='Line')

Plots a line using x-values [1, 2, 3] and y-values [4, 5, 6].

The label='Line' is used for legend identification.

4. Add a Legend with Custom Position

ax.legend(loc='upper center', bbox_to_anchor=(0.5, -0.1))

Adds a legend to the plot to label the plotted line.

loc='upper center': anchor point inside the legend box.

bbox_to_anchor=(0.5, -0.1):

Positions the legend outside the plot area, horizontally centered (x=0.5), slightly below the axes (y=-0.1).

5. Save the Plot to a File

plt.savefig('plot.png')

Saves the entire figure (not just the plot) to a file named plot.png.

Useful for exporting plots in scripts or automated reports.

6. Access and Print the Legend’s X-Coordinate

print(ax.get_legend().get_bbox_to_anchor()._bbox.x0)

ax.get_legend() retrieves the legend object.

.get_bbox_to_anchor() gets the bounding box anchor object.

._bbox.x0 accesses the x-coordinate (left side) of the bounding box — in this case: 0.5.

Final Output

0.5

This is the x-coordinate of the anchor point of the legend relative to the axes' bounding box.