我正在运行一个 python CGI 脚本,使用 numpy 从动态创建的 CSV 中读取数据。Numpy 抱怨它找不到文件,但它在那里。从 python 脚本我可以使用 system(cat) 预先打印文件......filename is: /tmp/file3aQJRnDump file with system(cat)...A-257-1-13629567-97-8867-27041-12323-17473-659Ask numpy to read it...Traceback (most recent call last): (some lines deleted, then...) File "request", line 195, in get_rawcsv_column col_data = get_csv_column(fname,column) File "request", line 189, in get_csv_column all_data = np.genfromtxt(fname,delimiter=",") File "usr/lib/python3.6/site-packages/numpy/lib/npyio.py", line 1551, in genfromtxt File "usr/lib/python3.6/site-packages/numpy/lib/_datasource.py", line 151, in open File "usr/lib/python3.6/site-packages/numpy/lib/_datasource.py", line 501, in openOSError: "/tmp/file3aQJRn" not found.之后,我可以在 bash 提示符下转储文件:# cat /tmp/file3aQJRnA-257-1-13629567-97-8867-27041-12323-17473-659我可以调用 Python (3.6) 和 numpy 来读取文件...numpy.genfromtxt("/tmp/file3aQJRn",delimiter=",")array([ nan, -2.57000000e+02, -1.00000000e+00, -1.36000000e+02, 2.95670000e+04, -9.70000000e+01, -8.86700000e+03, -2.70410000e+04, -1.23230000e+04, -1.74730000e+04, -6.59000000e+02])( nan 不是问题。它是随后从数组中删除的列标题。)这里发生了什么?临时文件由 C++ 应用程序使用 std::ofstream 从 tmpnam() 获得临时文件名生成。
添加回答
举报
0/150
提交
取消