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CLI
===
CLI provides the entry point.
The CLI object is used as a context, `cli_ctx`, that is passed around throughout the application. You will see this context, `cli_ctx`, referenced frequently.
We recommend specifying `cli_name`, `config_dir` and `config_env_var_prefix`.
For example:
`cli_name` - Name of CLI. Typically the executable name.
`config_dir` - Path to config dir. e.g. `os.path.expanduser(os.path.join('~', '.myconfig'))`
`config_env_var_prefix` - A prefix for environment variables used in config e.g. `CLI_`.
Use the `invoke()` method to invoke commands.
For example:
```Python
mycli = CLI(commands_loader_cls=MyCommandsLoader)
exit_code = mycli.invoke(sys.argv[1:])
```
How do I?
---------
### Show my own version info ###
Subclass `CLI` and override `get_cli_version()`.
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