【发布时间】:2019-02-15 09:26:43
【问题描述】:
我有一个很长的序列列表(假设每个长度为 16),由 0 和 1 组成。例如
s = ['0100100000010111', '1100100010010101', '1100100000010000', '0111100011110111', '1111100011010111']
现在我想将每个位视为一个特征,因此我需要将其转换为 numpy 数组或 pandas 数据帧。为了做到这一点,我需要用逗号分隔序列中存在的所有位,这对于大数据集来说是不可能的。
所以我尝试的是生成字符串中的所有位置:
slices = []
for j in range(len(s[0])):
slices.append((j,j+1))
print(slices)
[(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7), (7, 8), (8, 9), (9, 10), (10, 11), (11, 12), (12, 13), (13, 14), (14, 15), (15, 16)]
new = []
for i in range(len(s)):
seq = s[i]
for j in range(len(s[i])):
## I have tried both of these LOC but couldn't figure out
## how it could be done
new.append([s[slice(*slc)] for slc in slices])
new.append(s[j:j+1])
print(new)
预期 o/p:
new = [[0,1,0,0,1,0,0,0,0,0,0,1,0,1,1,1], [1,1,0,0,1,0,0,0,1,0,0,1,0,1,0,1], [1,1,0,0,1,0,0,0,0,0,0,1,0,0,0,0], [0,1,1,1,1,0,0,0,1,1,1,1,0,1,1,1], [1,1,1,1,1,0,0,0,1,1,0,1,0,1,1,1]]
提前致谢!!
【问题讨论】:
标签: python string python-3.x pandas numpy