matplotlib plot multiple lines code example

Example 1: matplotlib line plot

from matplotlib import pyplot as plt

# Median Developer Salaries by Age
dev_x = [25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35]

dev_y = [38496, 42000, 46752, 49320, 53200,
         56000, 62316, 64928, 67317, 68748, 73752]

plt.plot(dev_x, dev_y)
plt.xlabel('Ages')
plt.ylabel('Median Salary (USD)')
plt.title('Median Salary (USD) by Age')
plt.show()

#Basic line graph using python module matplotlib

Example 2: python plot multiple lines in same figure

# Short answer:
Call plt.plot() as many times as needed to add additional lines to plot.

# Example usage:
import matplotlib.pylot as plt
x_coordinates = [1, 2, 3]

y1_coordinates = [1, 2, 3]
y2_coordinates = [3, 4, 5]

plt.plot(x_coordinates, y1_coordinates) # plot first line
plt.plot(x_coordinates, y2_coordinates) # plot second line

Example 3: plot using matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3, 4])
plt.ylabel('some numbers')
plt.show()