class numpy.DataSource(destpath='.')[source]
A generic data source file (file, http, ftp, ...).
DataSources can be local files or remote files/URLs. The files may also be compressed or uncompressed. DataSource hides some of the low-level details of downloading the file, allowing you to simply pass in a valid file path (or URL) and obtain a file object.
Parameters: |
destpath : str or None, optional Path to the directory where the source file gets downloaded to for use. If |
---|
URLs require a scheme string (http://
) to be used, without it they will fail:
>>> repos = DataSource() >>> repos.exists('www.google.com/index.html') False >>> repos.exists('http://www.google.com/index.html') True
Temporary directories are deleted when the DataSource is deleted.
>>> ds = DataSource('/home/guido') >>> urlname = 'http://www.google.com/index.html' >>> gfile = ds.open('http://www.google.com/index.html') # remote file >>> ds.abspath(urlname) '/home/guido/www.google.com/site/index.html' >>> ds = DataSource(None) # use with temporary file >>> ds.open('/home/guido/foobar.txt') <open file '/home/guido.foobar.txt', mode 'r' at 0x91d4430> >>> ds.abspath('/home/guido/foobar.txt') '/tmp/tmpy4pgsP/home/guido/foobar.txt'
abspath (path) | Return absolute path of file in the DataSource directory. |
exists (path) | Test if path exists. |
open (path[, mode]) | Open and return file-like object. |
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Licensed under the NumPy License.
https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.DataSource.html