<human>:  What is a good Python code to draw a vertical line in on a graph.
<bot>:)

# Enter the x1, y1, x2, y2
x1 = 1
y1 = 1
x2 = 2
y2 = 2

# Calling the function
print((draw_line(x1, y1, x2, y2)))

#Example Output
# None

#Remember to inspect code for bugs.