当字符串无法转换为数字时,int()和float()函数会抛出ValueError异常。可以使用try...except块来处理这种情况。 python string_invalid = "abc" try: int_value = int(string_invalid) except ValueError: print("无法将字符串转换为整数") try: float_value = float(string_invalid) except ValueError: print("...
i)Create a bitmap with an image editor with only 2 bits per pixel (black and white) ii)Use the LCDAssistant (http://en.radzio.dxp.pl/bitmap_converter/ ) to generate the hex data. iii)Copy the hex data into the bitmap_converter.py file in the sample_images folder and run it on ...
int int.from_bytes() int.to_bytes() isinstance() issubclass() iter() len() list locals() map() max() memoryview min() next() object oct() open() ord() pow() print() property() range() repr() reversed() round() set setattr() slice sorted() staticmethod() str sum() super(...
toolchain_name = "arm-gnu-toolchain-14.2.rel1-x86_64-arm-none-eabi" # @param {"type":"string"} toolchain_ver = toolchain_name.split("-")[3] print("toolchain_name: ",toolchain_name) print("toolchain_ver: ",toolchain_ver) !wget https://developer.arm.com/-/media/Files/downloads/gnu...
MP_BC_LOAD_CONST_SMALL_INT0x14 MP_BC_LOAD_CONST_STRING0x16 MP_BC_LOAD_CONST_OBJ0x17 MP_BC_LOAD_NAME0x1b MP_BC_LOAD_ATTR0x1d MP_BC_STORE_NAME0x24 MP_BC_STORE_ATTR0x26 MP_BC_POP_JUMP_IF_TRUE0x36 MP_BC_POP_JUMP_IF_FALSE0x37 ...
// 字符串转byte stringToBytes(str) { var array = new Uint8Array(str.length); for (var i = 0, l = str.length; i < l; i++) { array[i] = str.charCodeAt(i); } // console.log(array); return array.buffer; }, 注意这个方法使用的是Uint8Array,ESP32用的是buffer.decode('UTF-8...
== io_ex.KEY1:# 读取数据data = str(at24cx.at24cxx_read(0,len(var1)))display.string(...
image.yuv_to_binary(yuv_tuple: Tuple[int, int, int]) → 0 | 1¶ 返回YUV格式的元组(y, u, v)对应的中心范围阈值二进制值(0-1)。 备注 OpenMV Cam固件使用YUV->RGB565处理转换,因此此方法不会像纯YUV系统那样返回准确的值。但是,图像库在内部确实是这样工作的。
*data, int len){CS_LOW();DC_HIGH();mp_obj_base_t *s = (mp_obj_base_t *)MP_OBJ_TO...
frommathimportsin,cos## This allows sphinx to build the docs#try:fromtimeimportsleep_msexceptImportError:sleep_ms=lambdams:Noneuint=intconst=lambdax:xclassmicropython:@staticmethoddefviper(func):returnfunc@staticmethoddefnative(func):returnfunc## If you don't need to build the docs, you can rem...