27 lines
647 B
Python
27 lines
647 B
Python
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import io
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if __name__ == '__main__':
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# io库里的StringIO和BytesIO提供了两个模拟文件的方法，本质应该是在内存里整了块缓冲区
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# StringIO提供了对字符串的虚拟IO，BytesIO则对应字节串
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# 这两个东西的操作和文件操作别无二致，就是不需要打开
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s = io.StringIO()
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b = io.BytesIO()
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s.write("Hello_String_IO\n")
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b.write(b'Hello BytesIO')
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print("This is POWER!!!!!", file=s, end='')
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print(s.getvalue())
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s.seek(0)
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print(s.read(4))
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s.seek(0)
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print(s.read())
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print(b.getvalue())
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b.seek(0)
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print(b.read(4))
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print(b.read())
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