obspy.io.sac.core._is_sac_xy

_is_sac_xy(filename)[source]

Checks whether a file is alphanumeric SAC file or not.

Parameters:: filename (str, open file, or file-like object) – Alphanumeric SAC file to be checked.
Return type:: bool
Returns:: True if a alphanumeric SAC file.

Example

>>> from obspy.core.util import get_example_file
>>> _is_sac_xy(get_example_file('testxy.sac'))
True
>>> _is_sac_xy(get_example_file('test.sac'))
False