38 lines
776 B
Python
38 lines
776 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: 字节字符串操作
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Desc :
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"""
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import re
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def byte_str():
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data = b'Hello World'
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print(data[0:5])
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print(data.startswith(b'Hello'))
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print(data.split())
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print(data.replace(b'Hello', b'Hello Cruel'))
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# 字节数组
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data = bytearray(b'Hello World')
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print(data[0:5])
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print(data.startswith(b'Hello'))
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print(data.split())
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print(data.replace(b'Hello', b'Hello Cruel'))
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# 正则式
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data = b'FOO:BAR,SPAM'
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print(re.split(b'[:,]',data))
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# 字节字符串打印不美观
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s = b'Hello World'
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print(s)
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print(s.decode('utf-8'))
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print('{:10s} {:10d} {:10.2f}'.format ('ACME', 100, 490.1).encode('ascii'))
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if __name__ == '__main__':
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byte_str()
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