我坚持从文件创建一个numpy数组。这是代码，其中short_logs.txt是带有标题（无行名称）的数据数组
所以矩阵和代码看起来像这样：
a b c d
12 3 5 6
9 8 45 8
log_file = open('short_logs.txt')
samples = log_file.readline()
log_names = samples.split()
fields = zip(log_names, ['f8']*len(log_names))
fields_dtype = dtype(fields)
logs = loadtxt(log_file, dtype=fields_dtype)
但后来我得到了这个错误，我不明白为什么。
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
C:\IPython\utils\py3compat.pyc in execfile(fname, glob, loc)
195 else:
196 filename = fname
--> 197 exec compile(scripttext, filename, 'exec') in glob, loc
198 else:
199 def execfile(fname, *where):
c:\users\temp\tmp4iajle.py in <module>()
17
18
---> 19 logs = loadtxt(log_file, dtype=fields_dtype)
C:\Users\numpy\lib\npyio.pyc in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin)
848 items = [conv(val) for (conv, val) in zip(converters, vals)]
849 # Then pack it according to the dtype's nesting
--> 850 items = pack_items(items, packing)
851 X.append(items)
852 finally:
C:\Users\numpy\lib\npyio.pyc in pack_items(items, packing)
782 ret = []
783 for length, subpacking in packing:
--> 784 ret.append(pack_items(items[start:start+length], subpacking))
785 start += length
786 return tuple(ret)
C:\Users\numpy\lib\npyio.pyc in pack_items(items, packing)
773 """Pack items into nested lists based on re-packing info."""
774 if packing == None:
--> 775 return items[0]
776 elif packing is tuple:
777 return tuple(items)
IndexError: list index out of range`
有人能指出我正确的方向吗？ 谢谢