Mercurial > pylearn

annotate lookup_list.py @ 73:69f97aad3faf

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Coded untested ApplyFunctionDataSet and CacheDataSet
author bengioy@bengiomac.local
date Sat, 03 May 2008 14:29:56 -0400
parents a5c70dc42972
children 427e02ef0629
rev   line source
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
1
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
2 from copy import copy
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
3
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
4 class LookupList(object):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
5 """
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
6 A LookupList is a sequence whose elements can be named (and unlike
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
7 a dictionary the order of the elements depends not on their key but
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
8 on the order given by the user through construction) so that
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
9 following syntactic constructions work as one would expect:
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
10 example = LookupList(['x','y','z'],[1,2,3])
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
11 example['x'] = [1, 2, 3] # set or change a field
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
12 x, y, z = example
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
13 x = example[0]
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
14 x = example["x"]
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
15 print example.keys() # prints ['x','y','z']
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
16 print example.values() # prints [[1,2,3],2,3]
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
17 print example.items() # prints [('x',[1,2,3]),('y',2),('z',3)]
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
18 example.append_keyval('u',0) # adds item with name 'u' and value 0
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
19 print len(example) # number of items = 4 here
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
20 print example+example # addition is like for lists, a concatenation of the items.
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
21 Note that the element names should be unique.
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
22 """
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
23 def __init__(self,names=[],values=[]):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
24 assert len(values)==len(names)
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
25 self.__dict__['_values']=values
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
26 self.__dict__['_name2index']={}
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
27 self.__dict__['_names']=names
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
28 for i in xrange(len(values)):
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
29 assert names[i] not in self._name2index
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
30 self._name2index[names[i]]=i
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
31
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
32 def keys(self):
17
759d17112b23 more comments, looping ArrayDataSet iterator, bugfixes to lookup_list, more tests
bergstrj@iro.umontreal.ca
parents: 12
diff changeset
33 return self._names
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
34
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
35 def values(self):
17
759d17112b23 more comments, looping ArrayDataSet iterator, bugfixes to lookup_list, more tests
bergstrj@iro.umontreal.ca
parents: 12
diff changeset
36 return self._values
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
37
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
38 def items(self):
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
39 """
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
40 Return a list of (name,value) pairs of all the items in the look-up list.
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
41 """
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
42 return zip(self._names,self._values)
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
43
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
44 def __getitem__(self,key):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
45 """
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
46 The key in example[key] can either be an integer to index the fields
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
47 or the name of the field.
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
48 """
45
a5c70dc42972 Test functions for dataset.py
bengioy@grenat.iro.umontreal.ca
parents: 22
diff changeset
49 if isinstance(key,int) or isinstance(key,slice) or isinstance(key,list):
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
50 return self._values[key]
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
51 else: # if not an int, key must be a name
45
a5c70dc42972 Test functions for dataset.py
bengioy@grenat.iro.umontreal.ca
parents: 22
diff changeset
52 # expecting key to be a valid field name
a5c70dc42972 Test functions for dataset.py
bengioy@grenat.iro.umontreal.ca
parents: 22
diff changeset
53 assert isinstance(key,str)
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
54 return self._values[self._name2index[key]]
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
55
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
56 def __setitem__(self,key,value):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
57 if isinstance(key,int):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
58 self._values[key]=value
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
59 else: # if not an int, key must be a name
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
60 if key in self._name2index:
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
61 self._values[self._name2index[key]]=value
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
62 else:
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
63 self.append_keyval(key,value)
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
64
19
57f4015e2e09 Iterators extend LookupList
bergstrj@iro.umontreal.ca
parents: 17
diff changeset
65 def append_keyval(self, key, value):
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
66 assert key not in self._name2index
19
57f4015e2e09 Iterators extend LookupList
bergstrj@iro.umontreal.ca
parents: 17
diff changeset
67 self._name2index[key]=len(self)
57f4015e2e09 Iterators extend LookupList
bergstrj@iro.umontreal.ca
parents: 17
diff changeset
68 self._values.append(value)
57f4015e2e09 Iterators extend LookupList
bergstrj@iro.umontreal.ca
parents: 17
diff changeset
69 self._names.append(key)
12
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
70
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
71 def __len__(self):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
72 return len(self._values)
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
73
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
74 def __repr__(self):
ff4e551490f1 Added LookupList type in lookup_list.py and used it to keep order
bengioy@esprit.iro.umontreal.ca
parents:
diff changeset
75 return "{%s}" % ", ".join([str(k) + "=" + repr(v) for k,v in self.items()])
22
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
76
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
77 def __add__(self,rhs):
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
78 new_example = copy(self)
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
79 for item in rhs.items():
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
80 new_example.append_keyval(item[0],item[1])
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
81 return new_example
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
82
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
83 def __radd__(self,lhs):
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
84 new_example = copy(lhs)
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
85 for item in self.items():
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
86 new_example.append_keyval(item[0],item[1])
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
87 return new_example
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
88
b6b36f65664f Created virtual sub-classes of DataSet: {Finite{Length,Width},Sliceable}DataSet,
bengioy@esprit.iro.umontreal.ca
parents: 20
diff changeset
89