首次提交完整的python工程代码

core/bit_packer.py

@@ -0,0 +1,31 @@
+"""
+2026/4/5
+TMY
+比特位打包器
+"""
+class BitPacker:
+    def __init__(self, total_bytes):
+        self.buf = bytearray(total_bytes)
+
+    def set_bits(self, start_byte, start_bit, bit_len, value):
+        """
+        start_byte: 起始字节
+        start_bit:  起始比特位（0~7）
+        bit_len:    比特长度
+        value:      无符号整数值
+        """
+        value = int(value) & ((1 << bit_len) - 1)
+        bit_pos = start_byte * 8 + start_bit
+
+        for i in range(bit_len):
+            bit = (value >> (bit_len - 1 - i)) & 1
+            byte_idx = bit_pos // 8
+            bit_idx = 7 - (bit_pos % 8)
+            if bit:
+                self.buf[byte_idx] |= (1 << bit_idx)
+            else:
+                self.buf[byte_idx] &= ~(1 << bit_idx)
+            bit_pos += 1
+
+    def get_bytes(self):
+        return bytes(self.buf)