altitude (km)   pressure (kPa)
  -7.15             1.16
   0.               0.6
  25.               0.03

import numpy as np
import matplotlib.pyplot as plt

hscale    = 10.8  # km
kms, kPas = np.array([-7.15, 0.0, 25.  ]), np.array([ 1.16, 0.6,  0.03])
P0, h0    = kPas[0], kms[0]
alts      = np.arange(-38, 25.)
pressures = P0 * np.exp(-(alts - h0) / hscale)

if True:
    plt.figure()
    for i in range(2):
        plt.subplot(1, 2, i+1)
        plt.plot(kms, kPas, 'ok')
        plt.plot(alts, pressures)
        if i == 0:
            plt.yscale('log')
            plt.ylabel('pressure (kPa)', fontsize=16)
        else:
            plt.title('linear for @Antzi', fontsize=16)
        plt.xlabel('altitude (km)',  fontsize=16)
    plt.show()