From c947bbaa46d5ea5860a42004d479b8144e45e8e5 Mon Sep 17 00:00:00 2001
From: David Lai <davidlatwe@gmail.com>
Date: Wed, 28 Apr 2021 13:10:50 +0800
Subject: [PATCH] fix deprecation warnings

---
 montydb/base.py            | 9 +++++----
 montydb/client.py          | 4 ++--
 montydb/engine/queries.py  | 5 ++++-
 montydb/engine/weighted.py | 5 ++++-
 montydb/utils/io.py        | 2 +-
 5 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/montydb/base.py b/montydb/base.py
index a10009b..c8737ac 100644
--- a/montydb/base.py
+++ b/montydb/base.py
@@ -18,11 +18,12 @@
 # Assembling crucial classes and functions form pymongo module,
 # some of them may modified by needs.
 
+try:
+    from collections.abc import MutableMapping
+except ImportError:
+    from collections import MutableMapping
 
-from collections import (
-    OrderedDict,
-    MutableMapping,
-)
+from collections import OrderedDict
 from .types import (
     abc,
     iteritems,
diff --git a/montydb/client.py b/montydb/client.py
index fceb812..3d3d898 100644
--- a/montydb/client.py
+++ b/montydb/client.py
@@ -128,9 +128,9 @@ def get_database(self, name):
         """
         # verify database name
         if platform.system() == "Windows":
-            is_invaild = set('/\. "$*<>:|?').intersection(set(name))
+            is_invaild = set(r'/\. "$*<>:|?').intersection(set(name))
         else:
-            is_invaild = set('/\. "$').intersection(set(name))
+            is_invaild = set(r'/\. "$').intersection(set(name))
 
         if is_invaild or not name:
             raise errors.OperationFailure("Invaild database name.")
diff --git a/montydb/engine/queries.py b/montydb/engine/queries.py
index c209118..9aff0a5 100644
--- a/montydb/engine/queries.py
+++ b/montydb/engine/queries.py
@@ -2,7 +2,10 @@
 import re
 from copy import deepcopy
 from datetime import datetime
-from collections import Mapping
+try:
+    from collections.abc import MutableMapping
+except ImportError:
+    from collections import MutableMapping
 
 from ..errors import OperationFailure
 
diff --git a/montydb/engine/weighted.py b/montydb/engine/weighted.py
index bfed83f..68e8a7e 100644
--- a/montydb/engine/weighted.py
+++ b/montydb/engine/weighted.py
@@ -1,6 +1,9 @@
 
 from datetime import datetime
-from collections import Mapping
+try:
+    from collections.abc import Mapping
+except ImportError:
+    from collections import Mapping
 
 from ..types import (
     integer_types,
diff --git a/montydb/utils/io.py b/montydb/utils/io.py
index f218b88..9d5731d 100644
--- a/montydb/utils/io.py
+++ b/montydb/utils/io.py
@@ -210,7 +210,7 @@ class MongoQueryRecorder(object):
 
     def __init__(self, mongodb, namespace=None, user=None):
         self._mongodb = mongodb
-        self._namespace = namespace or {"$regex": mongodb.name + "\..*"}
+        self._namespace = namespace or {"$regex": mongodb.name + r"\..*"}
         self._user = user
 
         self._epoch = datetime(1970, 1, 1)