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# Python 字节码指令
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Python 字节码变量操作命令通过 名称索引(名称索引)访问。这是为了在 Python 中实现动态变量访问(可以使用 eval 等作为字符串访问)
一条指令为 2 个字节，指令和参数以 little endian 形式存储
不带参数的指令也使用 2 个字节(参数部分为 0)
* 3.11的改动:指令不再是固定长度，一些指令超过2字节。在大多数情况下，额外的字节序列为零，其目的未知，但它被认为是一个优化选项。已知的不规则字节长度指令如下。
* `PRECALL` (4 bytes)
* `CALL` (10 byte)
* `BINARY_OP` (4 byte)
* `STORE_ATTR` (10 byte)
* `COMPARE_OP` (6 byte)
* `LOAD_GLOBAL` (12 byte)
* `LOAD_ATTR` (10 byte)
## STORE_NAME(名称索引)
```python
@ -115,4 +124,4 @@ fast_locals 对应的函数内部变量名称列表
## 单元格变量
对应于 cellvars
在函数内捕获到内部闭包函数的变量。由于制作了副本，因此原始变量保持原样。
在函数内捕获到内部闭包函数的变量。由于制作了副本，因此原始变量保持原样。