Add method read_generator.

voussoirkit/cacheclass.py

@@ -80,6 +80,15 @@ class Cache:
         except KeyError:
             return fallback
 
+    def keys(self):
+        return list(self.cache.keys())
+
+    def items(self):
+        return [(key, value) for (key, (value, timestamp)) in self.cache.items()]
+
+    def values(self):
+        return [value for (value, timestamp) in self.cache.values()]
+
     def pop(self, key):
         '''
         Remove the key and return its value, or raise KeyError.

voussoirkit/dotdict.py

@@ -20,10 +20,10 @@ class DotDict:
     def __getattr__(self, key):
         try:
             return self.__dict__[key]
-        except KeyError:
+        except KeyError as exc:
             if self.__default is not NO_DEFAULT:
                 return self.__default
-            raise
+            raise AttributeError from exc
 
     def __setattr__(self, key, value):
         self.__dict__[key] = value

voussoirkit/pathclass.py

@@ -94,6 +94,9 @@ class Extension:
     def __hash__(self):
         return hash(self.ext)
 
+    def __len__(self):
+        return len(self.ext)
+
     def __repr__(self):
         return f'Extension({repr(self.ext)})'
 
@@ -434,6 +437,14 @@ class Path:
         with self.open(mode, **kwargs) as handle:
             return handle.read()
 
+    def read_generator(self, mode, chunk_size, **kwargs):
+        with self.open(mode, **kwargs) as handle:
+            while True:
+                chunk = handle.read(chunk_size)
+                if not chunk:
+                    break
+                yield chunk
+
     def readlines(self, mode, **kwargs):
         '''
         Shortcut function for opening the file handle and reading lines from it.

voussoirkit/vlogging.py

@@ -61,7 +61,6 @@ def add_root_handler(level):
         formatter = Formatter('[{asctime}.{msecs:03.0f}] {levelname}:{name}.{funcName}:{message}', style='{', datefmt=datefmt)
     else:
         formatter = Formatter('[{asctime}.{msecs:03.0f}] {levelname}:{name}:{message}', style='{', datefmt=datefmt)
-    formatter.default_msec_format = '%s.%03d'
     handler.setFormatter(formatter)
     handler.setLevel(level)
     root.addHandler(handler)