file_lines

pydl.file_lines(path, compress=False)[source]

Replicates the IDL FILE_LINES() function.

Given a path to a file name or a list of such paths, returns the number of lines in the file(s).

Parameters:

path : str or list of str

Path to a file. Can be a list of paths.

compress : bool, optional

If set to True, assumes that all files in path are GZIP compressed.
Returns:

int or list of int

The number of lines in path. Returns a list of lengths if a list of files is supplied.

Notes

The /NOEXPAND_PATH option in IDL’s FILE_LINES() is not implemented.

References

http://www.harrisgeospatial.com/docs/file_lines.html

Examples

>>> from pydl import file_lines
>>> from os.path import dirname, join
>>> file_lines(join(dirname(__file__),'tests','t','this-file-contains-42-lines.txt'))
42