不刪除的作法
x = [list(range(i)) for i in range(10, 0, -1)]
del x[3]
del x[6]
for i,d in enumerate(x):
print(d)
#
rst = []
for i in range(len(x[0])):
r = []
for j in range(len(x)):
try:
r.append(x[j][i])
except IndexError:
break
rst.append(r)
print('

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