1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
"""A more or less complete user-defined wrapper around list objects."""
class UserList:
def __init__(self, initlist=None):
self.data = []
if initlist is not None:
# XXX should this accept an arbitary 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 __cmp__(self, other):
if isinstance(other, UserList):
return cmp(self.data, other.data)
else:
return cmp(self.data, other)
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 __getslice__(self, i, j):
i = max(i, 0); j = max(j, 0)
userlist = self.__class__()
userlist.data[:] = self.data[i:j]
return userlist
def __setslice__(self, i, j, other):
i = max(i, 0); j = max(j, 0)
if isinstance(other, UserList):
self.data[i:j] = other.data
elif isinstance(other, type(self.data)):
self.data[i:j] = other
else:
self.data[i:j] = list(other)
def __delslice__(self, i, j):
i = max(i, 0); j = max(j, 0)
del self.data[i:j]
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)
else:
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)
else:
return self.__class__(list(other) + self.data)
def __mul__(self, n):
return self.__class__(self.data*n)
__rmul__ = __mul__
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): return self.data.index(item)
def reverse(self): self.data.reverse()
def sort(self, *args): apply(self.data.sort, args)
def extend(self, other):
if isinstance(other, UserList):
self.data.extend(other.data)
else:
self.data.extend(other)
|
