如何从 Python 的 ByteIO 获取二进制数据

使用 BytesIO 实例的 getvalue() 函数。示例：

bytesio_example.py

#!/usr/bin/env python3
from io import BytesIO

myio = BytesIO()
myio.write(b"Test 123")

print(myio.getvalue()) # 打印 b'Test 123'

#!/usr/bin/env python3
from io import BytesIO

myio = BytesIO()
myio.write(b"Test 123")

print(myio.getvalue()) # 打印 b'Test 123'

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