Added support from Folder Dict, Now you can create a Dict for a folde…

boltons/folderdict.py

@@ -0,0 +1,96 @@
+"""
+A representation of a folder in the form of dictionary
+So, you can access any directory in the form of a dict.
+Keys - Files in the folder
+Values - Their content
+
+CONSTRAINT:-
+1) It supports files opened in r and w mode. Not in rb or wb mode.
+2) No support for appending to a file
+3) No support for setdefault
+
+
+For example
+folder_dict = FolderDict(FOLDER_PATH)
+"""
+import os
+
+
+class FolderDict(dict):
+
+    def get_absolute_path(self, file_name):
+        return os.path.join(self.folder_path, file_name)
+
+    def get_only_files(self):
+        for file_name in os.listdir(self.folder_path):
+            absolute_file_path = self.get_absolute_path(file_name)
+            if os.path.isfile(absolute_file_path):
+                yield absolute_file_path
+
+    def __init__(self, folder_path, create_new=False):
+        self.folder_path = folder_path
+        self._dict = {}
+        if os.path.exists(self.folder_path) and os.path.isdir(self.folder_path):
+            for absolute_file_path in self.get_only_files():
+                file_name = os.path.split(absolute_file_path)[1]
+                with open(absolute_file_path, "r") as reader:
+                    self._dict[file_name] = reader.read()
+        else:
+            if create_new:
+                os.makedirs(folder_path, exist_ok=True)
+            else:
+                raise IOError("[Errno 2] No such file or directory: '{0}'".format(self.folder_path))
+
+    def __getitem__(self, item):
+        """
+        https://stackoverflow.com/questions/20677923/python-print-last-traceback-only
+        We'll swallow the KeyError and we'll just raise FNF, as that's what the KeyError specifies
+        """
+        try:
+            return self._dict[item]
+        except KeyError:
+            raise IOError("[Errno 2] No such file or directory: '{0}'".
+                                    format(os.path.join(self.folder_path, item)))
+
+    def __setitem__(self, key, value):
+        """
+        Be careful,it will overwrite the existing file.
+        We support w mode not a mode now
+        """
+        with open(self.get_absolute_path(key), "w") as writer:
+            self._dict[key] = value
+            writer.write(value)
+
+    def keys(self):
+        return self._dict.keys()
+
+    def __iter__(self):
+        for key in self.keys():
+            yield key
+
+    def values(self):
+        for key in self.keys():
+            yield self._dict[key]
+
+    def items(self):
+        for key in self.keys():
+            yield key, self[key]
+
+    def __contains__(self, item):
+        return item in self.keys()
+
+    def __delitem__(self, key):
+        del self._dict[key]
+        os.remove(self.get_absolute_path(key))
+
+    def get(self, k, default=None):
+        return self[k] if k in self.keys() else default
+
+    def pop(self, k):
+        content = self[k]
+        self.__delitem__(k)
+        return content
+
+    def __repr__(self):
+        return "FolderDict({!r})".format(self.folder_path)
+

tests/test_folderdict.py

@@ -0,0 +1,54 @@
+import os
+from contextlib import contextmanager
+from tempfile import mkdtemp
+import shutil
+from boltons.folderdict import FolderDict
+
+
+@contextmanager
+def temporary_directory():
+    name = mkdtemp()
+    try:
+        yield name
+    finally:
+        shutil.rmtree(name)
+
+# Dirty hack to support python 2.x
+try:
+    from tempfile import TemporaryDirectory
+except ImportError:
+    TemporaryDirectory = temporary_directory
+
+with TemporaryDirectory() as directory_name:
+    folder_dict = FolderDict(directory_name)
+    folder_dict["File1"] = "Sample file1"
+
+    assert os.listdir(directory_name) == ["File1"]
+    assert open(os.path.join(directory_name, "File1")).read() == "Sample file1"
+
+    val = folder_dict.pop("File1")
+    assert val == "Sample file1"
+
+    try:
+        new_value = folder_dict["Another File"]
+    except IOError:
+        val = "Correct exception raised"
+
+    assert val == "Correct exception raised"
+
+    folder_dict["File2"] = "Sample file2"
+    folder_dict["File3"] = "Sample file3"
+    folder_dict["File4"] = "Sample file4"
+
+    assert sorted(os.listdir(directory_name)) == sorted(folder_dict.keys())
+
+    assert os.path.isfile(os.path.join(directory_name, "File2"))
+    assert os.path.isfile(os.path.join(directory_name, "File3"))
+
+
+
+
+
+
+
+