diff --git a/README.md b/README.md
index 2d100f7..906f854 100644
--- a/README.md
+++ b/README.md
@@ -9,16 +9,14 @@ Use cases:
 
 ## Installation
 
-*TODO*
+### With pip from Github
 
-<!-- ### pip
+Requirements: git, python, pip
 
-1. Install python
-2. `py -m pip install dyn2py`
+```
+pip install "dyn2py @ git+https://github.com/infeeeee/dyn2py"
+```
 
-### github releases
-
--->
 
 ## Usage
 
@@ -35,6 +33,7 @@ positional arguments:
 
 options:
   -h, --help            show this help message and exit
+  -v, --version         show program's version number and exit
   -l LOGLEVEL, --loglevel LOGLEVEL
                         set log level, possible options: CRITICAL, ERROR, WARNING, INFO, DEBUG
   -n, --dry-run         do not modify files, only show log
diff --git a/dyn2py/__init__.py b/dyn2py/__init__.py
index 39bad7e..ff473be 100644
--- a/dyn2py/__init__.py
+++ b/dyn2py/__init__.py
@@ -23,10 +23,15 @@ __all__ = [
     "PythonNode",
     "DynamoFileException",
     "PythonNodeNotFoundException",
+    "PythonNodeException",
     "PythonFileException"
 ]
 
 
+def __dir__():
+    return __all__
+
+
 def run(options: Options | None = None) -> None:
     """Run an extraction as from the command line
 
@@ -49,6 +54,11 @@ def run(options: Options | None = None) -> None:
             """)
         )
 
+        parser.add_argument("-v", "--version",
+                            action="version",
+                            version=f'{METADATA["Name"]} {METADATA["Version"]}'
+                            )
+
         parser.add_argument("-l", "--loglevel",
                             metavar="LOGLEVEL",
                             choices=LOGLEVELS,
diff --git a/dyn2py/files.py b/dyn2py/files.py
index b811d1c..2862927 100644
--- a/dyn2py/files.py
+++ b/dyn2py/files.py
@@ -110,21 +110,18 @@ class File():
         """
         return bool(self.extension == ".py")
 
-    def write(self, options: Options | None = None) -> None:
+    def write(self, options: Options = Options()) -> None:
         """Prepare writing file to the disk:
             create backup, process dry-run, call filetype specific write_file() methods
             Should be called on subclasses!
 
         Args:
-            options(Options | None, optional): Run options. Defaults to None.
+            options(Options, optional): Run options. Defaults to Options().
 
         Raises:
             TypeError: If called on a File object
         """
 
-        if not options:
-            options = Options()
-
         # This should only work on subclasses:
         if type(self).__name__ == "File":
             raise TypeError("This method shouldn't be called on File objects!")
@@ -169,16 +166,13 @@ class DynamoFile(File):
     open_files: set[DynamoFile] = set()
     """A set of open Dynamo files, before saving. Self added by read()"""
 
-    def extract_python(self, options: Options | None = None) -> None:
+    def extract_python(self, options: Options = Options()) -> None:
         """Extract and write python files
 
         Args:
-            options(Options | None, optional): Run options. Defaults to None.
+            options(Options, optional): Run options. Defaults to Options().
         """
 
-        if not options:
-            options = Options()
-
         logging.info(f"Extracting from file: {self.filepath}")
 
         # Go through nodes in the file:
@@ -314,17 +308,15 @@ class DynamoFile(File):
         with open(self.filepath, "w", encoding="utf-8", newline="") as output_file:
             json.dump(self.full_dict, output_file, indent=2,  use_decimal=True)
 
-    def get_related_python_files(self, options: Options | None = None) -> list["PythonFile"]:
+    def get_related_python_files(self, options: Options = Options()) -> list["PythonFile"]:
         """Get python files exported from this Dynamo file
 
         Args:
-            options(Options | None, optional): Run options. Defaults to None.
+            options(Options, optional): Run options. Defaults to Options().
 
         Returns:
             list[PythonFile]: A list of PythonFile objects
         """
-        if not options:
-            options = Options()
 
         # Find the folder of the python files
         if options.python_folder:
@@ -483,16 +475,13 @@ class PythonFile(File):
             logging.debug(f"Header data from python file: {self.header_data}")
             # logging.debug(f"Code from python file: {self.code}")
 
-    def update_dynamo(self, options: Options | None = None) -> None:
+    def update_dynamo(self, options: Options = Options()) -> None:
         """Update a the source Dynamo graph from this python script
 
         Args:
-            options (Options | None, optional): Run options. Defaults to None.
+            options (Options, optional): Run options. Defaults to Options().
         """
 
-        if not options:
-            options = Options()
-
         dynamo_file = self.get_source_dynamo_file()
 
         new_python_node = PythonNode(python_file=self)
diff --git a/pyproject.toml b/pyproject.toml
index 518b7ea..bc37051 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "dyn2py"
-version = "0.2.0"
+version = "0.2.1"
 description = "Extract python code from Dynamo graphs"
 readme = "README.md"
 requires-python = ">=3.8"