graph.py

import matplotlib.pyplot as plt
import numpy as np


def plot(points, label):
    dates = [p[0] for p in points]
    y = 100
    values = []
    for _, augment in points:
        y *= 1 + augment / 100
        values.append(y)

    plt.plot(dates, values, label=label)


# https://twitter.com/StanGuerini/status/1541695171158593536
points = [
    (1990, 2.5),
    (1991, 1.9),
    (1992, 2.6),
    (1993, 2.7),
    (1994, 1.4),
    (1995, 2.3),
    (1996, 0),
    (1997, 0.5),
    (1998, 1.1),
    (1999, 1),
    (2000, 0.9),
    (2001, 0.9),
    (2002, 1.3),
    (2003, 0.6),
    (2004, 0.5),
    (2006, 1.2),
    (2007, 1),
    (2008, 0.5),
    (2009, 0),
    (2010, 0.7),
    (2011, 0.3),
    (2012, 0),
    (2013, 0),
    (2014, 0),
    (2015, 0),
    (2016, 0.3),
    (2017, 0.9),
    (2018, 0),
    (2019, 0),
    (2020, 0),
    (2021, 3.5),
]
# https://www.insee.fr/fr/statistiques/2854085
inflation = [
    (1990, 3.4),
    (1991, 3.9),
    (1992, 3.5),
    (1993, 2.4),
    (1994, 1.4),
    (1995, 1.1),
    (1996, 0.9),
    (1997, 0.7),
    (1998, 0.7),
    (1999, 0.7),
    (2000, 1.1),
    (2001, 1.6),
    (2002, 2.1),
    (2003, 1.7),
    (2004, 1.6),
    (2005, 1),
    (2006, 1.1),
    (2007, 1.5),
    (2008, 2),
    (2009, 1.8),
    (2010, 1.1),
    (2011, 1.1),
    (2012, 1.3),
    (2013, 0.6),
    (2014, 0.2),
    (2015, 0.5),
    (2016, 0.6),
]

plot(points, "point d'indice")
plot(inflation, "inflation")

plt.legend(loc="upper left")
plt.show()