PermClass

class permuta.demo.PermClass(basis=())

Bases: object

A perm(utation) class object.

Pass the constructor an iterable of Perms or objects that can be interpreted as such; each non-Perm element is passed to the Perm constructor. If the constructor is passed a single int or Perm, the principal class for that Perm is constructed.

Examples

>>> PermClass()
<All perms>
>>> PermClass(123)
<Perms avoiding: (1, 2, 3)>
>>> PermClass(["1423", "1234"])
<Perms avoiding: (1, 2, 3, 4) and (1, 4, 2, 3)>
>>> PermClass([123, "321", Perm(3, 1, 2)])
<Perms avoiding: (1, 2, 3), (3, 1, 2), and (3, 2, 1)>
>>> PermClass([62, 123])
<Perms avoiding: (2, 1) and (1, 2, 3)>

of_length(length: int) → permuta.demo._PermClass._PermClassOfLength

Return the subset of perms of a certain length.