scopelist
scopelist exposes the ScopeList
class, a container type intended to
simplify checking authorization scope.
Installation
You can install scopelist from PyPi:
> pip install scopelist
That should install all the dependencies for you. If you want to install directly from source, clone the git repository and run the standard python setup.py install command.
Dependencies
- Python 2.7, 3.2+
Usage
ScopeList implements the __contains__
magic method, making it easy
to check if a particular scope and permission is expressed a list of
scopes.
>>> from scopelist import ScopeList >>> ScopeList(['user/emails+r']) ScopeList(['user/emails']) >>> 'user/emails' in ScopeList(['user/emails']) True
A ScopeList in fact works like any immutable sequence.
>>> len(ScopeList(['user/emails', 'user/repo'])) 2 >>> ScopeList(['user/emails+r', 'user/repo+aaaaa'])[1] 'user/repo+a' >>> list(ScopeList(['user/emails+r', 'user/repo+aaaaa'])) ['user/emails', 'user/repo+a'] >>> ['foo/bar', 'foo/baz'] in ScopeList.from_string('foo') True >>> ['foo/bar', 'foo/baz', 'extra'] in ScopeList(['foo', 'bar']) False
They can be parsed directly from strings too
>>> ScopeList.from_string("user/emails+r user/emails+n") ScopeList(['user/emails', 'user/emails+n'])
>>> ScopeList.from_string("user/emails+r:user/emails+n", item_sep=":") ScopeList(['user/emails', 'user/emails+n'])
Permissions
You can append letters to scope items to express certain permissions.
Any ascii letter that follows the permission separator (+
by
default) is interpreted as a permission. When checking for an item
in the scope list, both its value and permission must match at least
one item in the list.
>>> 'user/emails+a' in ScopeList(['user/emails']) False >>> 'user/emails+a' in ScopeList(['user/emails+a']) True
Indicate multiple permissions in a scope list item by including more than
one letter after the +
symbol. Duplicate permissions are ignored.
>>> 'user/repo+w' in ScopeList(['user/repo+abcd', 'user/repo+rw']) True
Permissions are totally arbitrary, except that +r
is assumed by
default when no permissions are explicitly given.
>>> 'user/emails+r' in ScopeList(['user/emails']) True
You can change the default permissions to whatever you like.
>>> 'user/emails+n' in ScopeList(['user/emails'], default_mode='n') True >>> 'user/emails+q' in ScopeList(['user/emails'], default_mode='pq') True >>> 'user/emails+p' in ScopeList(['user/emails'], default_mode='pq') True
The permissions separator is also configurable.
>>> 'user/emails|r' in ScopeList(['user/emails'], mode_sep='|') True
Parents
The /
symbol is the default child separator. Parent scope items
automatically 'contain' child items in the scope list.
>>> 'user/emails+r' in ScopeList(['user']) True >>> 'user/emails+w' in ScopeList(['user']) False >>> 'user/emails+rw' in ScopeList(['user+w', 'user/emails+r']) True
The child separator can also be changed:
>>> 'user:emails+r' in ScopeList(['user'], child_sep=':') True