click.core.Context

Undocumented

Undocumented

Undocumented

Aborts the script.

Register a function to be called when the context tears down. This can be used to close resources opened during the script execution. Resources that support Python's context manager protocol which would be used in a ``with`` statement should be registered with :meth:`with_resource` instead. :param f: The function to execute on teardown.

Invoke all close callbacks registered with :meth:`call_on_close`, and exit all context managers entered with :meth:`with_resource`.

Like :meth:`find_object` but sets the innermost object to a new instance of `object_type` if it does not exist.

Exits the application with a given exit code.

Aborts the execution of the program with a specific error message. :param message: the error message to fail with.

Finds the closest object of a given type.

Finds the outermost context.

Similar to :meth:`invoke` but fills in default keyword arguments from the current context if the other command expects it. This cannot invoke callbacks directly, only other commands. .. versionchanged:: 8.0 All ``kwargs`` are tracked in :attr:`params` so they will be passed if ``forward`` is called at multiple levels.

Helper method to get formatted help page for the current context and command.

Get the source of a parameter. This indicates the location from which the value of the parameter was obtained. This can be useful for determining when a user specified a value on the command line that is the same as the default value. It will be :attr:`~click.core.ParameterSource.DEFAULT` only if the value was actually taken from the default. :param name: The name of the parameter. :rtype: ParameterSource .. versionchanged:: 8.0 Returns ``None`` if the parameter was not provided from any source.

Helper method to get formatted usage string for the current context and command.

Invokes a command callback in exactly the way it expects. There are two ways to invoke this method: 1. the first argument can be a callback and all other arguments and keyword arguments are forwarded directly to the function. 2. the first argument is a click command object. In that case all arguments are forwarded as well but proper click parameters (options and click arguments) must be keyword arguments and Click will fill in defaults. Note that before Click 3.2 keyword arguments were not properly filled in against the intention of this code and no context was created. For more information about this change and why it was done in a bugfix release see :ref:`upgrade-to-3.2`. .. versionchanged:: 8.0 All ``kwargs`` are tracked in :attr:`params` so they will be passed if :meth:`forward` is called at multiple levels.

Get the default for a parameter from :attr:`default_map`. :param name: Name of the parameter. :param call: If the default is a callable, call it. Disable to return the callable instead. .. versionchanged:: 8.0 Added the ``call`` parameter.

Creates the :class:`~click.HelpFormatter` for the help and usage output. To quickly customize the formatter class used without overriding this method, set the :attr:`formatter_class` attribute. .. versionchanged:: 8.0 Added the :attr:`formatter_class` attribute.

This helper method can be used with the context object to promote it to the current thread local (see :func:`get_current_context`). The default behavior of this is to invoke the cleanup functions which can be disabled by setting `cleanup` to `False`. The cleanup functions are typically used for things such as closing file handles. If the cleanup is intended the context object can also be directly used as a context manager. Example usage:: with ctx.scope(): assert get_current_context() is ctx This is equivalent:: with ctx: assert get_current_context() is ctx .. versionadded:: 5.0 :param cleanup: controls if the cleanup functions should be run or not. The default is to run these functions. In some situations the context only wants to be temporarily pushed in which case this can be disabled. Nested pushes automatically defer the cleanup.

Set the source of a parameter. This indicates the location from which the value of the parameter was obtained. :param name: The name of the parameter. :param source: A member of :class:`~click.core.ParameterSource`.

Gather information that could be useful for a tool generating user-facing documentation. This traverses the entire CLI structure. .. code-block:: python with Context(cli) as ctx: info = ctx.to_info_dict() .. versionadded:: 8.0

Register a resource as if it were used in a ``with`` statement. The resource will be cleaned up when the context is popped. Uses :meth:`contextlib.ExitStack.enter_context`. It calls the resource's ``__enter__()`` method and returns the result. When the context is popped, it closes the stack, which calls the resource's ``__exit__()`` method. To register a cleanup function for something that isn't a context manager, use :meth:`call_on_close`. Or use something from :mod:`contextlib` to turn it into a context manager first. .. code-block:: python @click.group() @click.option("--name") @click.pass_context def cli(ctx): ctx.obj = ctx.with_resource(connect_db(name)) :param context_manager: The context manager to enter. :return: Whatever ``context_manager.__enter__()`` returns. .. versionadded:: 8.0