Improve documentation

README.md

@@ -4,6 +4,14 @@
 
 `auto_cli` is a tool for calling Python functions directly from the command-line, without the need for writing argument parsers. Instead, the argument parser is automatically generated from the annotation of the function, including default arguments and types. When you use `auto_cli`, you can still use your Python functions from code without any changes. In fact, you can use `auto_cli` to generate a CLI for functions in a stand-alone script, or for an external library, as long as the functions have type annotations.
 
+
+## Installation
+auto_cli requires Python 3.6+ and can be installed as follows
+```
+$ git clone https://github.com/jvanvugt/auto_cli
+$ pip install ./auto_cli
+```
+
 ## Getting Started
 Add a file called `auto_cli.py` to any directory. This file registers all the functions that are available from the command-line. Imagine you wrote a package called `weather`, containing just a single function with the signature
 ```python
@@ -23,6 +31,9 @@ Register your command-line app with `auto_cli`, by running the following command
 $ ac cli register_app --name weather
 ```
 
+All `auto_cli` commands start with `ac`. When you install `auto_cli`, the `cli` app will automatically be registered. The `cli` app is used for interacting with `auto_cli` itself. After running the command above, the commands that are registered in `auto_cli.py` are available via `ac weather <command>`.
+
+
 Now, you can call your function from the command-line:
 ```bash
 $ ac weather get_weather --location Amsterdam
@@ -42,7 +53,24 @@ auto_cli.register_command(get_weather)
 
 Alternatively, you could manipulate the `PYTHONPATH` environment variable to make sure Python can find your function.
 
-## Benefits
+## ac cli
+The following commands are available with `ac cli`:
+```
+apps            Get all registered apps
+register_app    Register an app with auto_cli
+delete_app      Delete the app
+```
+In general, you can figure out which commands are available for an app by running
+```
+$ ac <app>
+```
+
+If you want to know how to use a command, you can run it with `--help`:
+```
+$ ac cli register_app --help
+```
+
+## Benefits over other CLI packages
 - Write your function once, call it from Python code _and_ the command-line
 - Automatically generate argument parsers, no need to duplicate argument names, default values, documentation and types.
 - Automatically print the result of the function to the console, no need to clutter your code with `print` or `log`.

auto_cli.py

@@ -2,3 +2,4 @@
 
 auto_cli.register_command("auto_cli.cli.apps")
 auto_cli.register_command("auto_cli.cli.register_app")
+auto_cli.register_command("auto_cli.cli.delete_app")

auto_cli/cli.py

@@ -53,6 +53,13 @@ def register_app(name: str, location: Optional[Path] = None) -> None:
         config.register_app(name, location)
 
 
+def delete_app(name: str) -> str:
+    """Delete the app"""
+    with Configuration() as config:
+        config.delete_app(name)
+    return f"Deleted {name}"
+
+
 def run_command(app: str, argv: List[str]) -> None:
     """Run a command in app"""
     commands = _load_app(app)

auto_cli/configuration.py

@@ -34,6 +34,15 @@ def register_app(self, name: str, location: Optional[Path]) -> None:
         self.config["apps"][name] = {"location": str(app_location)}
         self._dirty = True
 
+    def delete_app(self, name: str) -> None:
+        apps = self.config["apps"]
+        if name not in apps:
+            _print_and_quit(
+                f"Unknown app '{name}'. Run `ac cli apps` to see which apps are registered."
+            )
+        del apps[name]
+        self._dirty = True
+
     def get_app_location(self, name: str) -> Path:
         """Get the location of the app called `name`"""
         location = self.config["apps"].get(name)

setup.py

@@ -4,6 +4,7 @@
     name="auto_cli",
     packages=[],
     version="0.1.0",
+    python_requires=">=3.6",
     description="Automatically generate a command-line interface for any Python function",
     author="Joris van Vugt",
     license="MIT",