1 files changed, 16 insertions, 9 deletions

diff --git a/src/ee/part/__init__.py b/src/ee/part/__init__.py
index 996eeff..43e4cfa 100644
--- a/src/ee/part/__init__.py
+++ b/src/ee/part/__init__.py
@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import List, MutableMapping, Optional, Iterator, Union
+from typing import List, Optional, Iterator, Union
 
 from ee import EeException
 from ee.money import Money
@@ -43,6 +43,12 @@ class PartNumber(Reference):
     def to_xml(self):
         return types.PartNumber(value=self.value)
 
+    def __eq__(self, other):
+        return self.value == other.value
+
+    def __hash__(self):
+        return hash(self.value)
+
 
 class SupplierPartNumber(Reference):
     def __init__(self, value: str):
@@ -51,6 +57,12 @@ class SupplierPartNumber(Reference):
     def to_xml(self):
         return types.SupplierPartNumber(value=self.value)
 
+    def __eq__(self, other):
+        return self.value == other.value
+
+    def __hash__(self):
+        return hash(self.value)
+
 
 class ReferenceList(object):
     def __init__(self, part_uri):
@@ -296,6 +308,9 @@ class Part(object):
     def find_fact(self, key: str) -> Optional[types.Fact]:
         return next((f for f in self.get_facts() if f.keyProp == key), None)
 
+    def remove_fact(self, key):
+        self.xml.factsProp.fact = [f for f in self.xml.factsProp.fact if f.keyProp != key]
+
 
 class Facts(object):
     def __init__(self, part):
@@ -331,7 +346,6 @@ class Assembly(object):
 class PartDb(object):
     def __init__(self):
         self.parts: List[Entry] = []
-        self.pn_index: MutableMapping[str, Entry] = {}
         self.new_entries = 0
         self._assembly: Optional[Assembly] = None
 
@@ -342,9 +356,6 @@ class PartDb(object):
         e = Entry(new, part)
         self.parts.append(e)
 
-        if e.pn:
-            self.pn_index[e.pn] = e
-
         if e.new:
             self.new_entries = self.new_entries + 1
 
@@ -355,10 +366,6 @@ class PartDb(object):
     def size(self) -> int:
         return len(self.parts)
 
-    def find_by_pn(self, pn: str) -> Optional[types.Part]:
-        entry = self.pn_index.get(pn, None)
-        return entry.part if entry else None
-
     @property
     def has_assembly(self):
         return self._assembly is not None