fix tests

issue17a.lp

@@ -0,0 +1,61 @@
+\Problem name: 
+
+Minimize
+OBJROW: 7740 item0_in_bin1 + 489 item1_in_bin1 + 152 item2_in_bin1 + 3410 item3_in_bin1 + 9948 item4_in_bin1 + 7862 item5_in_bin1 + 8519 item6_in_bin1 + 3212 item7_in_bin1 + 8798 item8_in_bin1 + 4979 item9_in_bin1
+ + 2178 item10_in_bin1 + 5984 item11_in_bin1 + 2518 item12_in_bin1 + 3270 item13_in_bin1 + 7183 item14_in_bin1
+Subject To
+constr(0):  item0_in_bin0 >= 0
+constr(1):  item1_in_bin0 >= 0
+constr(2):  item2_in_bin0 >= 0
+constr(3):  item3_in_bin0 >= 0
+constr(4):  item4_in_bin0 >= 0
+constr(5):  item5_in_bin0 >= 0
+constr(6):  item6_in_bin0 >= 0
+constr(7):  item7_in_bin0 >= 0
+constr(8):  item8_in_bin0 >= 0
+constr(9):  item9_in_bin0 >= 0
+constr(10):  item10_in_bin0 >= 0
+constr(11):  item11_in_bin0 >= 0
+constr(12):  item12_in_bin0 >= 0
+constr(13):  item13_in_bin0 >= 0
+constr(14):  item14_in_bin0 >= 0
+constr(15):  item0_in_bin1 >= 0
+constr(16):  item1_in_bin1 >= 0
+constr(17):  item2_in_bin1 >= 0
+constr(18):  item3_in_bin1 >= 0
+constr(19):  item4_in_bin1 >= 0
+constr(20):  item5_in_bin1 >= 0
+constr(21):  item6_in_bin1 >= 0
+constr(22):  item7_in_bin1 >= 0
+constr(23):  item8_in_bin1 >= 0
+constr(24):  item9_in_bin1 >= 0
+constr(25):  item10_in_bin1 >= 0
+constr(26):  item11_in_bin1 >= 0
+constr(27):  item12_in_bin1 >= 0
+constr(28):  item13_in_bin1 >= 0
+constr(29):  item14_in_bin1 >= 0
+constr(30):  item0_in_bin0 + item0_in_bin1 = 1
+constr(31):  item1_in_bin0 + item1_in_bin1 = 1
+constr(32):  item2_in_bin0 + item2_in_bin1 = 1
+constr(33):  item3_in_bin0 + item3_in_bin1 = 1
+constr(34):  item4_in_bin0 + item4_in_bin1 = 1
+constr(35):  item5_in_bin0 + item5_in_bin1 = 1
+constr(36):  item6_in_bin0 + item6_in_bin1 = 1
+constr(37):  item7_in_bin0 + item7_in_bin1 = 1
+constr(38):  item8_in_bin0 + item8_in_bin1 = 1
+constr(39):  item9_in_bin0 + item9_in_bin1 = 1
+constr(40):  item10_in_bin0 + item10_in_bin1 = 1
+constr(41):  item11_in_bin0 + item11_in_bin1 = 1
+constr(42):  item12_in_bin0 + item12_in_bin1 = 1
+constr(43):  item13_in_bin0 + item13_in_bin1 = 1
+constr(44):  item14_in_bin0 + item14_in_bin1 = 1
+constr(45):  -7740 item0_in_bin0 + 7740 item0_in_bin1 -489 item1_in_bin0 + 489 item1_in_bin1 -152 item2_in_bin0 + 152 item2_in_bin1 -3410 item3_in_bin0 + 3410 item3_in_bin1 -9948 item4_in_bin0 + 9948 item4_in_bin1
+ -7862 item5_in_bin0 + 7862 item5_in_bin1 -8519 item6_in_bin0 + 8519 item6_in_bin1 -3212 item7_in_bin0 + 3212 item7_in_bin1 -8798 item8_in_bin0 + 8798 item8_in_bin1 -4979 item9_in_bin0 + 4979 item9_in_bin1
+ -2178 item10_in_bin0 + 2178 item10_in_bin1 -5984 item11_in_bin0 + 5984 item11_in_bin1 -2518 item12_in_bin0 + 2518 item12_in_bin1 -3270 item13_in_bin0 + 3270 item13_in_bin1 -7183 item14_in_bin0 + 7183 item14_in_bin1
+ >= -0
+Bounds
+Integers
+item0_in_bin0 item0_in_bin1 item1_in_bin0 item1_in_bin1 item2_in_bin0 item2_in_bin1 item3_in_bin0 item3_in_bin1 item4_in_bin0 item4_in_bin1 
+item5_in_bin0 item5_in_bin1 item6_in_bin0 item6_in_bin1 item7_in_bin0 item7_in_bin1 item8_in_bin0 item8_in_bin1 item9_in_bin0 item9_in_bin1 
+item10_in_bin0 item10_in_bin1 item11_in_bin0 item11_in_bin1 item12_in_bin0 item12_in_bin1 item13_in_bin0 item13_in_bin1 item14_in_bin0 item14_in_bin1 
+End

issue17a.sol

@@ -0,0 +1,30 @@
+item0_in_bin0 = 1
+item1_in_bin0 = 1
+item2_in_bin0 = 1
+item3_in_bin0 = 1
+item4_in_bin0 = 1
+item5_in_bin0 = 1
+item6_in_bin0 = 1
+item7_in_bin0 = 0
+item8_in_bin0 = 0
+item9_in_bin0 = 0
+item10_in_bin0 = 0
+item11_in_bin0 = 0
+item12_in_bin0 = 0
+item13_in_bin0 = 0
+item14_in_bin0 = 0
+item0_in_bin1 = 0
+item1_in_bin1 = 0
+item2_in_bin1 = 0
+item3_in_bin1 = 0
+item4_in_bin1 = 0
+item5_in_bin1 = 0
+item6_in_bin1 = 0
+item7_in_bin1 = 1
+item8_in_bin1 = 1
+item9_in_bin1 = 1
+item10_in_bin1 = 1
+item11_in_bin1 = 1
+item12_in_bin1 = 1
+item13_in_bin1 = 1
+item14_in_bin1 = 1

issue17b.lp

@@ -0,0 +1,61 @@
+\Problem name: 
+
+Minimize
+OBJROW: 152 item0_in_bin1 + 489 item1_in_bin1 + 2178 item2_in_bin1 + 2518 item3_in_bin1 + 3212 item4_in_bin1 + 3270 item5_in_bin1 + 3410 item6_in_bin1 + 4979 item7_in_bin1 + 5984 item8_in_bin1 + 7183 item9_in_bin1
+ + 7740 item10_in_bin1 + 7862 item11_in_bin1 + 8519 item12_in_bin1 + 8798 item13_in_bin1 + 9948 item14_in_bin1
+Subject To
+constr(0):  item0_in_bin0 >= 0
+constr(1):  item1_in_bin0 >= 0
+constr(2):  item2_in_bin0 >= 0
+constr(3):  item3_in_bin0 >= 0
+constr(4):  item4_in_bin0 >= 0
+constr(5):  item5_in_bin0 >= 0
+constr(6):  item6_in_bin0 >= 0
+constr(7):  item7_in_bin0 >= 0
+constr(8):  item8_in_bin0 >= 0
+constr(9):  item9_in_bin0 >= 0
+constr(10):  item10_in_bin0 >= 0
+constr(11):  item11_in_bin0 >= 0
+constr(12):  item12_in_bin0 >= 0
+constr(13):  item13_in_bin0 >= 0
+constr(14):  item14_in_bin0 >= 0
+constr(15):  item0_in_bin1 >= 0
+constr(16):  item1_in_bin1 >= 0
+constr(17):  item2_in_bin1 >= 0
+constr(18):  item3_in_bin1 >= 0
+constr(19):  item4_in_bin1 >= 0
+constr(20):  item5_in_bin1 >= 0
+constr(21):  item6_in_bin1 >= 0
+constr(22):  item7_in_bin1 >= 0
+constr(23):  item8_in_bin1 >= 0
+constr(24):  item9_in_bin1 >= 0
+constr(25):  item10_in_bin1 >= 0
+constr(26):  item11_in_bin1 >= 0
+constr(27):  item12_in_bin1 >= 0
+constr(28):  item13_in_bin1 >= 0
+constr(29):  item14_in_bin1 >= 0
+constr(30):  item0_in_bin0 + item0_in_bin1 = 1
+constr(31):  item1_in_bin0 + item1_in_bin1 = 1
+constr(32):  item2_in_bin0 + item2_in_bin1 = 1
+constr(33):  item3_in_bin0 + item3_in_bin1 = 1
+constr(34):  item4_in_bin0 + item4_in_bin1 = 1
+constr(35):  item5_in_bin0 + item5_in_bin1 = 1
+constr(36):  item6_in_bin0 + item6_in_bin1 = 1
+constr(37):  item7_in_bin0 + item7_in_bin1 = 1
+constr(38):  item8_in_bin0 + item8_in_bin1 = 1
+constr(39):  item9_in_bin0 + item9_in_bin1 = 1
+constr(40):  item10_in_bin0 + item10_in_bin1 = 1
+constr(41):  item11_in_bin0 + item11_in_bin1 = 1
+constr(42):  item12_in_bin0 + item12_in_bin1 = 1
+constr(43):  item13_in_bin0 + item13_in_bin1 = 1
+constr(44):  item14_in_bin0 + item14_in_bin1 = 1
+constr(45):  -152 item0_in_bin0 + 152 item0_in_bin1 -489 item1_in_bin0 + 489 item1_in_bin1 -2178 item2_in_bin0 + 2178 item2_in_bin1 -2518 item3_in_bin0 + 2518 item3_in_bin1 -3212 item4_in_bin0 + 3212 item4_in_bin1
+ -3270 item5_in_bin0 + 3270 item5_in_bin1 -3410 item6_in_bin0 + 3410 item6_in_bin1 -4979 item7_in_bin0 + 4979 item7_in_bin1 -5984 item8_in_bin0 + 5984 item8_in_bin1 -7183 item9_in_bin0 + 7183 item9_in_bin1
+ -7740 item10_in_bin0 + 7740 item10_in_bin1 -7862 item11_in_bin0 + 7862 item11_in_bin1 -8519 item12_in_bin0 + 8519 item12_in_bin1 -8798 item13_in_bin0 + 8798 item13_in_bin1 -9948 item14_in_bin0 + 9948 item14_in_bin1
+ >= -0
+Bounds
+Integers
+item0_in_bin0 item0_in_bin1 item1_in_bin0 item1_in_bin1 item2_in_bin0 item2_in_bin1 item3_in_bin0 item3_in_bin1 item4_in_bin0 item4_in_bin1 
+item5_in_bin0 item5_in_bin1 item6_in_bin0 item6_in_bin1 item7_in_bin0 item7_in_bin1 item8_in_bin0 item8_in_bin1 item9_in_bin0 item9_in_bin1 
+item10_in_bin0 item10_in_bin1 item11_in_bin0 item11_in_bin1 item12_in_bin0 item12_in_bin1 item13_in_bin0 item13_in_bin1 item14_in_bin0 item14_in_bin1 
+End

issue17b.sol

@@ -0,0 +1,30 @@
+item0_in_bin0 = 0
+item1_in_bin0 = 0
+item2_in_bin0 = 0
+item3_in_bin0 = 1
+item4_in_bin0 = 0
+item5_in_bin0 = 0
+item6_in_bin0 = 1
+item7_in_bin0 = 0
+item8_in_bin0 = 1
+item9_in_bin0 = 0
+item10_in_bin0 = 1
+item11_in_bin0 = 0
+item12_in_bin0 = 1
+item13_in_bin0 = 0
+item14_in_bin0 = 1
+item0_in_bin1 = 1
+item1_in_bin1 = 1
+item2_in_bin1 = 1
+item3_in_bin1 = 0
+item4_in_bin1 = 1
+item5_in_bin1 = 1
+item6_in_bin1 = 0
+item7_in_bin1 = 1
+item8_in_bin1 = 0
+item9_in_bin1 = 1
+item10_in_bin1 = 0
+item11_in_bin1 = 1
+item12_in_bin1 = 0
+item13_in_bin1 = 1
+item14_in_bin1 = 0

prtpy/binners.py

@@ -25,9 +25,11 @@ class Binner(ABC):
     All arrays created by the same binner share the following two variables:
      * numbins - the total number of bins.
      * valueof - a function that maps an item to its value.
+     * copiesof - a function that maps an item to the number of copies.
     """
-    def __init__(self, valueof: Callable = lambda x:x):
+    def __init__(self, valueof: Callable = lambda x:x, copiesof: Callable=lambda x:1):
         self.valueof = valueof
+        self.copiesof = copiesof
 
     @abstractmethod
     def new_bins(self, numbins:int)->BinsArray:
@@ -186,8 +188,8 @@ class BinnerKeepingSums(Binner):
     Bin #1: sum=3.0
     """
 
-    def __init__(self, valueof: Callable = lambda x:x):
-        super().__init__(valueof)
+    def __init__(self, valueof: Callable = lambda x:x, copiesof: Callable=lambda x:1):
+        super().__init__(valueof,copiesof)
 
     BinsArray = np.ndarray    # Here, the bins-array is simply an array of the sums.
 
@@ -330,8 +332,8 @@ class BinnerKeepingContents(BinnerKeepingSums):
     Bin #1: ['a'], sum=3.0
     """
 
-    def __init__(self, valueof: Callable = lambda x:x):
-        super().__init__(valueof)
+    def __init__(self, valueof: Callable = lambda x:x, copiesof: Callable=lambda x:1):
+        super().__init__(valueof, copiesof)
 
     BinsArray = Tuple[np.ndarray, List[List]]  # Here, each bins-array is a tuple: sums,lists. sums is an array of sums; lists is a list of lists of items.
 
@@ -451,7 +453,4 @@ def printbins(bins:BinsArray):
 
 if __name__ == "__main__":
     import doctest, sys
-    (failures, tests) = doctest.testmod(report=True, optionflags=doctest.FAIL_FAST)
-    print("{} failures, {} tests".format(failures, tests))
-    if failures>0:
-        sys.exit(1)
+    print(doctest.testmod(report=True, optionflags=doctest.FAIL_FAST))

prtpy/outputtypes.py

@@ -8,7 +8,7 @@
 
 class OutputType(ABC):
     @classmethod
-    def create_binner(cls, valueof: Callable) -> Binner:
+    def create_binner(cls, valueof: Callable, copiesof: Callable=None) -> Binner:
         """
         Construct and return a Bins structure. Used at the initialization phase of an algorithm.
         """
@@ -30,8 +30,8 @@ def extract_output_from_binsarray(cls, bins: BinsArray) -> List:
 class Sums(OutputType):
     """ Output the list of sums of all bins (but not the bins' contents).  """
     @classmethod
-    def create_binner(cls, valueof: Callable) -> List:
-        return BinnerKeepingSums(valueof)
+    def create_binner(cls, valueof: Callable, copiesof: Callable=None) -> List:
+        return BinnerKeepingSums(valueof,copiesof)
 
     @classmethod
     def extract_output_from_sums(cls, sums: List[float]) -> List:
@@ -94,8 +94,8 @@ class Partition(OutputType):
     """ Output the set of all bins. """
 
     @classmethod
-    def create_binner(cls, valueof: Callable) -> List:
-        return BinnerKeepingContents(valueof)
+    def create_binner(cls, valueof: Callable, copiesof: Callable=None) -> List:
+        return BinnerKeepingContents(valueof,copiesof)
 
     @classmethod
     def extract_output_from_sums_and_lists(cls, sums: List[float], lists: List[List[Any]]) -> List:

prtpy/partitioning/adaptors.py

@@ -16,12 +16,14 @@
 from prtpy import outputtypes as out, objectives as obj
 from prtpy.binners import Binner
 from typing import Callable, List, Any
+from numbers import Number
 
 def partition(
     algorithm: Callable,
     numbins: int,
     items: Any,
     valueof: Callable[[Any], float] = None,
+    copies: Any = 1,
     outputtype: out.OutputType = out.Partition,
     **kwargs
 ):
@@ -32,6 +34,7 @@ def partition(
         numbins (int), 
         items (list), 
         valueof (callable), 
+        copiesof (callable),
         outputtype (OutputType).
 
     :param numbins: int - how many parts should be in the partition?
@@ -42,6 +45,7 @@ def partition(
        * A list of strings (in this case, valueof should also be defined, and map each item name to its value);
 
     :param valueof: optional; required only if `items` is a list of item-names.
+    :param copiesof: optional; required only if `items` is a list of item-names.
 
     :param outputtype: what output to return. See `outputtypes.py'.
 
@@ -73,11 +77,31 @@ def partition(
         item_names = items.keys()
         if valueof is None:
             valueof = items.__getitem__
-    else:  # items is a list
+
+        # copiesof:
+        if isinstance(copies,dict):
+            copiesof = copies.__getitem__
+        elif isinstance(copies,Number):
+            copiesof = lambda item: copies
+        else:
+            raise TypeError(f"copies parameter {copies} is of wrong type {type(copies)}")
+    else:  # items is a list of values
         item_names = items
         if valueof is None:
             valueof = lambda item: item
-    binner = outputtype.create_binner(valueof)
+
+        # copiesof:
+        if isinstance(copies,list):
+            if len(set(items))==len(items):
+                copies_dict = dict(zip(items,copies))   # Works only when each item appears once
+                copiesof = copies_dict.__getitem__
+            else:
+                raise ValueError(f"copies argument can only be used when item names are unique, but they are not: {item_names}")
+        elif isinstance(copies,Number):
+            copiesof = lambda item: copies
+        else:
+            raise TypeError(f"copies parameter {copies} is of wrong type {type(copies)}")
+    binner = outputtype.create_binner(valueof,copiesof)
     bins   = algorithm(binner, numbins, item_names, **kwargs)
     return outputtype.extract_output_from_binsarray(bins)