--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stubs/usb/backend/libusb1.pyi	Tue May 28 06:42:27 2019 +0000
@@ -0,0 +1,101 @@
+# Stubs for usb.backend.libusb1 (Python 3)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from ctypes import *
+import usb.libloader as _objfinalizer
+import usb.libloader
+from typing import Any, Optional
+
+LIBUSB_ERROR_IO: int
+LIBUSB_ERROR_INVALID_PARAM: int
+LIBUSB_ERROR_ACCESS: int
+LIBUSB_ERROR_NO_DEVICE: int
+LIBUSB_ERROR_NOT_FOUND: int
+LIBUSB_ERROR_BUSY: int
+LIBUSB_ERROR_TIMEOUT: int
+LIBUSB_ERROR_OVERFLOW: int
+LIBUSB_ERROR_PIPE: int
+LIBUSB_ERROR_INTERRUPTED: int
+LIBUSB_ERROR_NO_MEM: int
+LIBUSB_ERROR_NOT_SUPPORTED: int
+LIBUSB_TRANSFER_ERROR: int
+LIBUSB_TRANSFER_TIMED_OUT: int
+LIBUSB_TRANSFER_CANCELLED: int
+LIBUSB_TRANSFER_STALL: int
+LIBUSB_TRANSFER_NO_DEVICE: int
+LIBUSB_TRANSFER_OVERFLOW: int
+
+class _libusb_endpoint_descriptor(Structure): ...
+class _libusb_interface_descriptor(Structure): ...
+class _libusb_interface(Structure): ...
+class _libusb_config_descriptor(Structure): ...
+class _libusb_device_descriptor(Structure): ...
+class _libusb_iso_packet_descriptor(Structure): ...
+class _libusb_transfer(Structure): ...
+
+class _Device(_objfinalizer.AutoFinalizedObject):
+    devid: Any = ...
+    def __init__(self, devid: Any) -> None: ...
+
+class _WrapDescriptor:
+    obj: Any = ...
+    desc: Any = ...
+    def __init__(self, desc: Any, obj: Optional[Any] = ...) -> None: ...
+    def __getattr__(self, name: Any): ...
+
+class _ConfigDescriptor(_objfinalizer.AutoFinalizedObject):
+    desc: Any = ...
+    def __init__(self, desc: Any) -> None: ...
+    def __getattr__(self, name: Any): ...
+
+class _DevIterator(_objfinalizer.AutoFinalizedObject):
+    dev_list: Any = ...
+    num_devs: Any = ...
+    def __init__(self, ctx: Any) -> None: ...
+    def __iter__(self) -> None: ...
+
+class _DeviceHandle:
+    handle: Any = ...
+    devid: Any = ...
+    def __init__(self, dev: Any) -> None: ...
+
+class _IsoTransferHandler(_objfinalizer.AutoFinalizedObject):
+    transfer: Any = ...
+    def __init__(self, dev_handle: Any, ep: Any, buff: Any, timeout: Any) -> None: ...
+    def submit(self, ctx: Optional[Any] = ...): ...
+
+class _LibUSB(usb.backend.IBackend):
+    lib: Any = ...
+    ctx: Any = ...
+    def __init__(self, lib: Any) -> None: ...
+    def enumerate_devices(self): ...
+    def get_device_descriptor(self, dev: Any): ...
+    def get_configuration_descriptor(self, dev: Any, config: Any): ...
+    def get_interface_descriptor(self, dev: Any, intf: Any, alt: Any, config: Any): ...
+    def get_endpoint_descriptor(self, dev: Any, ep: Any, intf: Any, alt: Any, config: Any): ...
+    def open_device(self, dev: Any): ...
+    def close_device(self, dev_handle: Any) -> None: ...
+    def set_configuration(self, dev_handle: Any, config_value: Any) -> None: ...
+    def get_configuration(self, dev_handle: Any): ...
+    def set_interface_altsetting(self, dev_handle: Any, intf: Any, altsetting: Any) -> None: ...
+    def claim_interface(self, dev_handle: Any, intf: Any) -> None: ...
+    def release_interface(self, dev_handle: Any, intf: Any) -> None: ...
+    def bulk_write(self, dev_handle: Any, ep: Any, intf: Any, data: Any, timeout: Any): ...
+    def bulk_read(self, dev_handle: Any, ep: Any, intf: Any, buff: Any, timeout: Any): ...
+    def intr_write(self, dev_handle: Any, ep: Any, intf: Any, data: Any, timeout: Any): ...
+    def intr_read(self, dev_handle: Any, ep: Any, intf: Any, buff: Any, timeout: Any): ...
+    def iso_write(self, dev_handle: Any, ep: Any, intf: Any, data: Any, timeout: Any): ...
+    def iso_read(self, dev_handle: Any, ep: Any, intf: Any, buff: Any, timeout: Any): ...
+    def ctrl_transfer(self, dev_handle: Any, bmRequestType: Any, bRequest: Any, wValue: Any, wIndex: Any, data: Any, timeout: Any): ...
+    def clear_halt(self, dev_handle: Any, ep: Any) -> None: ...
+    def reset_device(self, dev_handle: Any) -> None: ...
+    def is_kernel_driver_active(self, dev_handle: Any, intf: Any): ...
+    def detach_kernel_driver(self, dev_handle: Any, intf: Any) -> None: ...
+    def attach_kernel_driver(self, dev_handle: Any, intf: Any) -> None: ...
+
+def get_backend(find_library: Optional[Any] = ...): ...
+
+# Names in __all__ with no definition:
+#   LIBUSB_ERROR_OTHERLIBUSB_TRANSFER_COMPLETED
+#   LIBUSB_SUCESS