numpy.genfromtxt:delimiter =','无法拆分字符串

Question

我不明白为什么numpy.genfromtxt不能正确分割下面的字符串,delimiter=","而它适用于我的块中的大多数其他字符串.

chunk[12968]
Out[143]: '2901869281,3279442095,2012-12-15T23:00:00.003Z,Sacramento,CA,R#3817874,United States,38.583,-121.498,11, 8, 6, 5, 1, 0, 2, 3, 3, 5, 3, 3, 2, 2, 6, 6, 1, 2, 3, 0, 1, 1, 0, 0, 2, 2, 2, 2, 1, 0, 0, 2, 1, 0, 1, 1, 2, 0, 3, 1, 1, 1, 1, 0, 0, 4, 0, 0, 0, 1, 3, 1, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 9, 0, 0, 0, 2, 3, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,130\n'

我期待一个形状的数组(110,),但得到以下

genfromtxt([chunk[12968]],delimiter=",",dtype=np.int64)
Out[142]: 
array([2901869281, 3279442095,         -1,         -1,         -1,
               -1], dtype=int64)

请注意,我使用izip_longestfrom itertools以这种方式读取大块*csv:

with open('events.csv','r') as:
    for chunk in izip_longest(*[f] *50000):
          ...

感谢帮助.

Answer 1

默认为的comments参数,因此输入中的所有内容都会被忽略:genfromtxt()'#'#

2901869281,3279442095,2012-12-15T23:00:00.003Z,Sacramento,CA,R#3817874,United States,...
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