Observer, tester et améliorer son code python

Anticiper

• https://www.jetbrains.com/pycharm/help/code-inspection.html

• https://wiki.python.org/moin/PythonSpeed/PerformanceTips

Observer

• https://docs.python.org/3.8/library/profile.html

• https://pypi.org/project/pycallgraph2/

Exemple d’utilisation:

#imports
import cProfile
from pycallgraph2 import PyCallGraph
from pycallgraph2.output import GraphvizOutput

def sonde_temps():
    """
    decorateur
    :param ma_fonction:
    :return:
    """
    def deco(function_orginale):
        def sonder(liste_entier):
            cp = cProfile.Profile()
            cp.enable()
            function_orginale(liste_entier)
            cp.disable()
            cp.print_stats()
        return sonder
    return deco

def carre(a):
    """
    fonction appliquant un carré à la valeur passée en argument
    :param a:
    :return:
    """
    return a**2


@sonde_temps()
def appliquer_carre(alist):
    """
    application du carré
    :param alist:
    :return:
    """
    return list(map(carre,alist))


if __name__ == '__main__':
    print(appliquer_carre(range(0,100000)))
    with PyCallGraph(output=GraphvizOutput(output_file='appliquer_carre.png')):
        appliquer_carre(range(0,100000))

Tester

Via des premiers tests unitaires:

https://docs.python.org/fr/3/library/unittest.html

Exemple d’utilisation:

import unittest

# La fonction à tester
def IsOdd(n):
    return n % 2 == 1

# Un scenario de tests.
class IsOddTests(unittest.TestCase):

    def testUn(self):
        self.assertTrue(IsOdd(1))

    def testDeux(self):
        
        self.assertFalse(IsOdd(2))
    
    def testTrois(self):
        self.assertEqual(IsOdd(2), True)
    

if __name__ == '__main__':
    unittest.main()

A travers un cours complet :

https://realpython.com/python-testing