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@@ -476,6 +476,142 @@ class MonObject: |
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\center \huge QCM |
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# |
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```python |
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def dire_bonjour(): |
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return "Bonjour" |
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dire_bonjour() |
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``` |
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1. Erreur |
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2. Affiche "Bonjour" |
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3. N'affiche rien |
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\pause |
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Réponse: 3: la fonction retourne quelque chose, |
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mais on n'en fait rien |
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# |
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```python |
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def différencernce(x, y): |
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return x - y |
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z = différence(y=4, x=5) |
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``` |
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Que vaut `z`? |
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1. `1` |
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2. `-1` |
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3. Erreur |
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\pause |
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Réponse: 1 Quand on nomme les arguments, on les mets dans l'ordre qu'on veut. |
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# |
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```python |
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class MonObject: |
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def ma_méthode(): |
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print("Bonjour") |
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mon_objet = MonObject() |
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mon_objet.ma_méthode() |
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``` |
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1. Erreur |
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2. Affiche 'Bonjour' |
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\pause |
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Réponse 1: les méthodes prennent `self` en premier argument |
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# |
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```python |
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class MonObject: |
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def ma_méthode(): |
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print("mon attribut est", self.mon_attribut) |
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mon_attribut = 42 |
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mon_objet = MonObject() |
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mon_objet.ma_méthode() |
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``` |
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1. Affiche "mon attribut est 42' |
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2. Erreur |
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\pause |
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Réponse 2: Les attributs doivent exister quand ils sont utilisés comme valeur |
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# |
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```python |
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class MonObject: |
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def ma_méthode(self): |
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print(self.mon_attribut) |
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mon_objet = MonObject() |
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mon_objet.mon_attribut = 42 |
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mon_objet.ma_méthode() |
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``` |
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1. Erreur |
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2. Affiche '42' |
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\pause |
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Réponse 2: On peut créer des attributs avec des assignations |
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# |
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```python |
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class MonObject: |
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def ma_méthode(self): |
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self.mon_attribut = 42 |
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print("mon attribut est", self.mon_attribut) |
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mon_objet = MonObject() |
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mon_objet.ma_méthode() |
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``` |
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1. Affiche "mon attribut est 42' |
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2. Erreur |
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\pause |
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Réponse 1: On peut créer des attributs dans |
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des méthodes grâce à `self`. |
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# |
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```python |
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class MonObject: |
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def __init__(self, valeur): |
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self.mon_attribut = valeur |
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mon_objet = MonObject() |
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valeur = mon_objet.mon_attribut |
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print(valeur) |
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``` |
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1. Erreur |
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2. Affiche '42' |
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\pause |
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Réponse 2: `__init__` est une méthode magique appelée automatiquement. |
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# |
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\center \huge Atelier |
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\center \huge Atelier |
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# Consignes |
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# Consignes |
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