Return `true` if the `Expr` contains an expression that appears to include a side-effect (like a function call). Accepts a closure that determines wh

Helper function to create a directory and all parent directories

Return the positional argument at the given index, or `None` if no such argument exists.

Return true if `self & other` should simplify to `Never`: if the intersection of the two types could never be inhabited by any possible runtime value.

Returns an iterator over the fixes in the map, along with the file path.

Pushes a new [`Binding`] and returns its [`BindingId`].

Generic function to remove arguments or keyword arguments in function calls and class definitions. (For classes, `args` should be considered `bases`.)

Calls `self`. Returns a [`CallError`] if `self` is (always or possibly) not callable, or if the arguments are not compatible with the formal parameter

Returns an iterator over all [`NodeId`] ancestors, starting from the given [`NodeId`].

Consumes the next character

Returns an [`Iterator`] over the current statement hierarchy, from the current [`Stmt`] through to any parents.

Returns the node following the comment. The direct child node (ignoring lists) of the [`enclosing_node`](DecoratedComment::enclosing_node) that follo

Extract the leading indentation from a line.

Returns `true` if the text only consists of ASCII characters

Returns `true` if a string is a valid Python identifier (e.g., variable name).

Returns `true` if this is a keyword-variadic parameter.

Returns whether this is a known class.

Returns `true` if a function definition is an `@overload`.

Loads a reference to the parsed module. Note that holding on to the reference will prevent garbage collection of the AST. This method will reparse th

Returns `true` if the given name matches any of the ignored patterns.

Parses the content and returns its AST

Returns the relative path as specified by the user.

Add a primary annotation with a message. If the message is empty, then an annotation without any message be created. See the docs on `TestEnvironmen

Returns the [`QualifiedName`] of the imported name (e.g., given `from foo import bar as baz`, returns `["foo", "bar"]`).

Returns the [`TextRange`] for the diagnostic.

Returns the resolver key for this file.

Generate source code from a [`Stmt`].

Returns all the tokens for the parsed output.

Look up a dunder method on the meta-type of `self` and call it. Returns an `Err` if the dunder method can't be called, or the given arguments are not

Returns the client settings for the workspace that this document belongs to.

Returns the [`BindingId`] if this symbol resolves to a concrete binding.

Returns an iterator over the bytes of the concatenated bytestring.

Closes the virtual file.

Return the underlying source code.

Returns extra items only when they were explicitly declared. An implicitly open `TypedDict` returns `None` here because its hidden items are not dire

Returns the files belonging to this project.

Returns the [`FileRange`] of the function's name.