31 lines
560 B
Python
31 lines
560 B
Python
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#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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"""
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Topic: 读取二进制数据到可变缓冲区中
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Desc :
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"""
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import os.path
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def read_into_buffer(filename):
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buf = bytearray(os.path.getsize(filename))
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with open(filename, 'rb') as f:
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f.readinto(buf)
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return buf
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def read_tobuffer():
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buf = bytearray(os.path.getsize('filename'))
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print(buf)
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m1 = memoryview(buf)
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m2 = m1[-5:]
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print(m2)
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m2[:] = b'WORLD'
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print(buf)
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bytearray(b'Hello World')
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if __name__ == '__main__':
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read_tobuffer()
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