Change to use sha256 hashing

hash() is intended to be used for sets and dictionaries, where the
occasional collisions are expected. Also, in some versions of Python,
hash() is affected by hash randomization, it's not clear whether this
will be desirable.

rope/contrib/autoimport/sqlite.py

@@ -2,7 +2,8 @@
 
 import contextlib
 import json
-import random
+from hashlib import sha256
+import secrets
 import re
 import sqlite3
 import sys
@@ -154,18 +155,21 @@ def create_database_connection(
         memory : bool
             if true, don't persist to disk
         """
+        def calculate_project_hash(data: str) -> str:
+            return sha256(data.encode()).hexdigest()
+
         if not memory and project is None:
             raise Exception("if memory=False, project must be provided")
         if memory or project is None or project.ropefolder is None:
             # Allows the in-memory db to be shared across threads
             # See https://www.sqlite.org/inmemorydb.html
-            project_hash: int
+            project_hash: str
             if project is None:
-                project_hash = random.randint(100_000_000, 999_999_999)
+                project_hash = secrets.token_hex()
             elif project.ropefolder is None:
-                project_hash = hash(project.address)
+                project_hash = calculate_project_hash(project.address)
             else:
-                project_hash = hash(project.ropefolder.real_path)
+                project_hash = calculate_project_hash(project.ropefolder.real_path)
             return sqlite3.connect(
                 f"file:memdb{project_hash}:?mode=memory&cache=shared", uri=True
             )