Différence entre la méthode append () et extension () dans Python
Difference between List append() and List extend() method
a =[1,2]
b= [3,4]
# append() method
a.append(b)
print("Using append() method", a)
x =[1,2]
y= [3,4]
# extend() method
x.extend(y)
print("Using extend() method", x)
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