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:

pathstr or list of str: Path to a file. Can be a list of paths.
compressbool, 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

https://www.nv5geospatialsoftware.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

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file_lines¶