import matplotlib.pyplot as plt
import numpy as np

# Data to be plotted:

x = ['Alfa', 'Beta', 'Gamma']
y = np.array([10, 20, 30])

# Plotting:
    
plt.close('all')
plt.figure(1, figsize=(12, 9))

plt.bar(x, y, width=0.9, color=('green', 'blue', 'red'))

# Plots text on top of each bar using plt.txt():

offset_y = 0.5

for k in range(0, len(x)):
    plt.text(x[k], y[k]+offset_y, str(y[k]))

plt.title('Gjeldsoversikt')
plt.xlabel('Bankens navn')
plt.ylabel('Gjeld [MNOK]')

plt.savefig('stolpediagram.pdf')
plt.show()