Top-rated recipes tagged "paths"

Normalizing paths (Python)

2010-01-26T14:39:00-08:00

Python recipe 577023 by Gustavo Narea (absolute_path, normalization, normalize, path, paths). Revision 3.

While dealing with paths, it's often necessary to make sure they all have the same structure so any operation you perform on them can be reliable, specially when it comes to comparing two or more paths. Unusual paths like "/this//is//a///path" or "another/path" can cause unexpected behavior in your application and this is where this function comes into play.

dealing with directory paths with ~ (Python)

2010-06-16T23:17:20-07:00

Python recipe 577270 by roopeshv (directory, expanding, paths). Revision 2.

Dealing with directory paths which start with ~ which are passed as paramaters, to os module functions.

Here is what I think python doesn't do for me:

>>> import os
# suppose my home = curdir = /home/rv
>>> os.path.abspath('.') 
'/home/rv'

Now if I want to go to folder /home/rv/test if there is no folder by name /home/rv/~/test/

# This is what happens by default.
>>> os.path.abspath('~/test')
'/home/rv/~/test'

>>> os.chdir('/home/rv/some/dir')
# doesn't matter if the resulting path exists or not.
>>> os.path.abspath('~/test')
'home/rv/some/dir/~/test'

This would be more sensible I guess:

# if /home/rv/~/test doesn't exist
>>> os.path.abspath('~/test')
'/home/rv/test'

file path generator from path patterns (Python)

2010-07-09T19:10:59-07:00

Python recipe 577230 by Trent Mick (cli, files, path, paths, walk). Revision 4.

Provides a _paths_from_path_patterns that will generate a list of paths from a list of path patterns. A "path pattern" can include glob chars. By default it generates a recursive listing of file paths, but: recursion can be turned off, file and/or dir paths can be listed. It supports a list of glob exclusions or inclusions.

This function makes it easy to implement typical "-r|--recursive" and "-x|--exclude" options for command-line scripts that work on given file paths. See example usages below.

Note: I use a leading _ on function names because my typical usage of my recipes is as re-usable internal functions in Python modules.