How to use the apkutils.dex.util.keysToRanges function in apkutils

BinaryOp = next(_it)
BinaryOpConst = next(_it)

INVOKE_TYPES = InvokeVirtual, InvokeSuper, InvokeDirect, InvokeStatic, InvokeInterface

# instructions which Dalvik considers to throw
THROW_TYPES = INVOKE_TYPES + (ConstString, ConstClass, MonitorEnter, MonitorExit, CheckCast, InstanceOf, ArrayLen, NewArray, NewInstance,
                              FilledNewArray, FillArrayData, Throw, ArrayGet, ArrayPut, InstanceGet, InstancePut, StaticGet, StaticPut, BinaryOp, BinaryOpConst)
# last two only if it is int/long div or rem

# ignore the possiblity of linkage errors (i.e. constants and instanceof can't throw)
# in theory MonitorExit can't throw either due to the structured locking checks, but these are broken and work inconsistently
PRUNED_THROW_TYPES = INVOKE_TYPES + (MonitorEnter, MonitorExit, CheckCast, ArrayLen, NewArray, NewInstance, FilledNewArray,
                                     FillArrayData, Throw, ArrayGet, ArrayPut, InstanceGet, InstancePut, StaticGet, StaticPut, BinaryOp, BinaryOpConst)

OPCODES = util.keysToRanges({
    0x00: Nop,
    0x01: Move,
    0x04: MoveWide,
    0x07: Move,
    0x0a: MoveResult,
    0x0e: Return,
    0x12: Const32,
    0x16: Const64,
    0x1a: ConstString,
    0x1c: ConstClass,
    0x1d: MonitorEnter,
    0x1e: MonitorExit,
    0x1f: CheckCast,
    0x20: InstanceOf,
    0x21: ArrayLen,
    0x22: NewInstance,

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from apkutils.dex import util

# Code for parsing the various Dalvik opcode formats
INSTRUCTION_FORMAT = util.keysToRanges({
    0x00: '10x',
    0x01: '12x',
    0x02: '22x',
    0x03: '32x',
    0x04: '12x',
    0x05: '22x',
    0x06: '32x',
    0x07: '12x',
    0x08: '22x',
    0x09: '32x',
    0x0a: '11x',
    0x0b: '11x',
    0x0c: '11x',
    0x0d: '11x',
    0x0e: '10x',
    0x0f: '11x',