Python initialisieren Sie die Liste Länge n
Creating an empty list:
>>> l = [None] * 10
>>> l
[None, None, None, None, None, None, None, None, None, None]
Dentedghost
Creating an empty list:
>>> l = [None] * 10
>>> l
[None, None, None, None, None, None, None, None, None, None]# 2.X only. Use list(range(10)) in 3.X.
>>> l = range(10)
>>> l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]list2 = filter(None, list1)empty_lists = [ [] for _ in range(n) ]li = [None] * 5 # [None, None, None, None, None]
li = [0] * 5 # [0, 0, 0, 0, 0]>>> num = []
>>> len(num)
0