>>> a= [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1]>>> for n, i in enumerate(a):... if i == 1:... a[n] = 10...>>> a[10, 2, 3, 4, 5, 10, 2, 3, 4, 5, 10]
>>> a= [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1]>>> for n, i in enumerate(a):... if i == 1:... a[n] = 10...>>> a[10, 2, 3, 4, 5, 10, 2, 3, 4, 5, 10]
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