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# BELLYNCK Manon
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# GUILLAUMIN-TORRES Ambre
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# COVIN Clara
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class Expression :
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def __init__ (valeur_racine, fils_gauche, fils_droit):
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self.valeur = valeur_racine
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self.gauche = fils_gauche
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self.droit = fils_droit
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def évalue (self):
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if self.valeur == '*':
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return multiplication(fils_gauche, fils_droit)
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if self.valeur == '+':
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return addition(fils_gauche, fils_droit)
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else :
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pass
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def __str__ : #affichage en dfs infixe
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