Used isort to sort imports. Also added to the git pre-commit hook.

[python_utils.git] / logical_search.py

diff --git a/logical_search.py b/logical_search.py
index 805ec223010b93b2a1bf68e1fdee9467daac14aa..4295aa0892fd0a67e8af778aa92f92a30d58e436 100644 (file)
--- a/logical_search.py
+++ b/logical_search.py
@@ -2,20 +2,10 @@
 
 from __future__ import annotations
 
-from collections import defaultdict
 import enum
 import sys
-from typing import (
-    Any,
-    Dict,
-    List,
-    NamedTuple,
-    Optional,
-    Set,
-    Sequence,
-    Tuple,
-    Union,
-)
+from collections import defaultdict
+from typing import Any, Dict, List, NamedTuple, Optional, Sequence, Set, Tuple, Union
 
 
 class ParseError(Exception):
@@ -30,9 +20,7 @@ class Document(NamedTuple):
 
     docid: str  # a unique idenfier for the document
     tags: Set[str]  # an optional set of tags
-    properties: List[
-        Tuple[str, str]
-    ]  # an optional set of key->value properties
+    properties: List[Tuple[str, str]]  # an optional set of key->value properties
     reference: Any  # an optional reference to something else
 
 
@@ -86,15 +74,23 @@ class Corpus(object):
     ...                    reference=None,
     ...                   )
     ...          )
+    >>> c.add_doc(Document(
+    ...                    docid=3,
+    ...                    tags=set(['urgent']),
+    ...                    properties=[
+    ...                                ('author', 'Scott'),
+    ...                                ('subject', 'car turning in front of you')
+    ...                    ],
+    ...                    reference=None,
+    ...                   )
+    ...          )
     >>> c.query('author:Scott and important')
     {1}
     """
 
     def __init__(self) -> None:
         self.docids_by_tag: Dict[str, Set[str]] = defaultdict(set)
-        self.docids_by_property: Dict[Tuple[str, str], Set[str]] = defaultdict(
-            set
-        )
+        self.docids_by_property: Dict[Tuple[str, str], Set[str]] = defaultdict(set)
         self.docids_with_property: Dict[str, Set[str]] = defaultdict(set)
         self.documents_by_docid: Dict[str, Document] = {}
 
@@ -173,11 +169,7 @@ class Corpus(object):
         """Invert a set of docids."""
 
         return set(
-            [
-                docid
-                for docid in self.documents_by_docid.keys()
-                if docid not in original
-            ]
+            [docid for docid in self.documents_by_docid.keys() if docid not in original]
         )
 
     def get_doc(self, docid: str) -> Optional[Document]:
@@ -287,9 +279,7 @@ class Corpus(object):
                         ok = True
                         break
                 if not ok:
-                    raise ParseError(
-                        "Unbalanced parenthesis in query expression"
-                    )
+                    raise ParseError("Unbalanced parenthesis in query expression")
 
             # and, or, not
             else:
@@ -366,23 +356,17 @@ class Node(object):
                     raise ParseError(f"Unexpected query {tag}")
         elif self.op is Operation.DISJUNCTION:
             if len(evaled_operands) != 2:
-                raise ParseError(
-                    "Operation.DISJUNCTION (or) expects two operands."
-                )
+                raise ParseError("Operation.DISJUNCTION (or) expects two operands.")
             retval.update(evaled_operands[0])
             retval.update(evaled_operands[1])
         elif self.op is Operation.CONJUNCTION:
             if len(evaled_operands) != 2:
-                raise ParseError(
-                    "Operation.CONJUNCTION (and) expects two operands."
-                )
+                raise ParseError("Operation.CONJUNCTION (and) expects two operands.")
             retval.update(evaled_operands[0])
             retval = retval.intersection(evaled_operands[1])
         elif self.op is Operation.INVERSION:
             if len(evaled_operands) != 1:
-                raise ParseError(
-                    "Operation.INVERSION (not) expects one operand."
-                )
+                raise ParseError("Operation.INVERSION (not) expects one operand.")
             _ = evaled_operands[0]
             if isinstance(_, set):
                 retval.update(self.corpus.invert_docid_set(_))
@@ -393,4 +377,5 @@ class Node(object):
 
 if __name__ == '__main__':
     import doctest
+
     doctest.testmod()