Move UserList to collections.
diff --git a/Lib/collections.py b/Lib/collections.py
index abde718..93194e0 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -163,6 +163,80 @@
################################################################################
+### UserList
+################################################################################
+
+class UserList(MutableSequence):
+ """A more or less complete user-defined wrapper around list objects."""
+ def __init__(self, initlist=None):
+ self.data = []
+ if initlist is not None:
+ # XXX should this accept an arbitrary sequence?
+ if type(initlist) == type(self.data):
+ self.data[:] = initlist
+ elif isinstance(initlist, UserList):
+ self.data[:] = initlist.data[:]
+ else:
+ self.data = list(initlist)
+ def __repr__(self): return repr(self.data)
+ def __lt__(self, other): return self.data < self.__cast(other)
+ def __le__(self, other): return self.data <= self.__cast(other)
+ def __eq__(self, other): return self.data == self.__cast(other)
+ def __ne__(self, other): return self.data != self.__cast(other)
+ def __gt__(self, other): return self.data > self.__cast(other)
+ def __ge__(self, other): return self.data >= self.__cast(other)
+ def __cast(self, other):
+ return other.data if isinstance(other, UserList) else other
+ def __cmp__(self, other):
+ return cmp(self.data, self.__cast(other))
+ def __contains__(self, item): return item in self.data
+ def __len__(self): return len(self.data)
+ def __getitem__(self, i): return self.data[i]
+ def __setitem__(self, i, item): self.data[i] = item
+ def __delitem__(self, i): del self.data[i]
+ def __add__(self, other):
+ if isinstance(other, UserList):
+ return self.__class__(self.data + other.data)
+ elif isinstance(other, type(self.data)):
+ return self.__class__(self.data + other)
+ return self.__class__(self.data + list(other))
+ def __radd__(self, other):
+ if isinstance(other, UserList):
+ return self.__class__(other.data + self.data)
+ elif isinstance(other, type(self.data)):
+ return self.__class__(other + self.data)
+ return self.__class__(list(other) + self.data)
+ def __iadd__(self, other):
+ if isinstance(other, UserList):
+ self.data += other.data
+ elif isinstance(other, type(self.data)):
+ self.data += other
+ else:
+ self.data += list(other)
+ return self
+ def __mul__(self, n):
+ return self.__class__(self.data*n)
+ __rmul__ = __mul__
+ def __imul__(self, n):
+ self.data *= n
+ return self
+ def append(self, item): self.data.append(item)
+ def insert(self, i, item): self.data.insert(i, item)
+ def pop(self, i=-1): return self.data.pop(i)
+ def remove(self, item): self.data.remove(item)
+ def count(self, item): return self.data.count(item)
+ def index(self, item, *args): return self.data.index(item, *args)
+ def reverse(self): self.data.reverse()
+ def sort(self, *args, **kwds): self.data.sort(*args, **kwds)
+ def extend(self, other):
+ if isinstance(other, UserList):
+ self.data.extend(other.data)
+ else:
+ self.data.extend(other)
+
+
+
+################################################################################
### Simple tests
################################################################################