Remove due dates

Author: leonlan

example.ipynb

@@ -273,7 +273,7 @@
    "id": "42d677c0-9e7e-421d-a843-aec7cd9e137b",
    "metadata": {},
    "source": [
-    "Multi-project RCPSP handles multiple projects with shared resources."
+    "Multi-project RCPSP handles multiple projects with shared resources, downloaded from https://www.projectmanagement.ugent.be/research/project_scheduling/RCMPSP."
    ]
   },
   {
@@ -324,8 +324,8 @@
     {
      "data": {
       "text/plain": [
-       "[Project(activities=[0, 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], release_date=0, due_date=None),\n",
-       " Project(activities=[62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123], release_date=0, due_date=None)]"
+       "[Project(activities=[0, 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], release_date=0),\n",
+       " Project(activities=[62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123], release_date=0)]"
       ]
      },
      "execution_count": 12,

psplib/ProjectInstance.py

@@ -101,13 +101,10 @@ class Project:
         The activities indices that belong to this project.
     release_date
         The earliest start time of this project.
-    due_date
-        The due date of this project, if available. Default is ``None``.
     """
 
     activities: list[int]
     release_date: int = 0
-    due_date: int | None = None
 
     @property
     def num_activities(self):

psplib/parse_mplib.py

@@ -34,19 +34,12 @@ def parse_mplib(loc: Union[str, Path]) -> ProjectInstance:
 
     for project_idx in range(1, num_projects + 1):
         project_data = list(map(int, next(lines).split()))
-
-        if len(project_data) == 3:
-            # Modified MPLIB instances that include due date.
-            num_activities, release_date, due_date = project_data
-        else:
-            # Original MPLIB instances do not include due date.
-            num_activities, release_date = project_data
-            due_date = None
+        num_activities, release_date = project_data
 
         next(lines)  # denotes used resources, implies that demand > 0
 
         idcs = [len(activities) + idx for idx in range(num_activities)]
-        projects.append(Project(idcs, release_date, due_date))
+        projects.append(Project(idcs, release_date))
 
         for activity_idx in range(1, num_activities + 1):
             line = next(lines).split()