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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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"""
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兼容Python版本
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"""
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import sys
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is_py2 = (sys.version_info[0] == 2)
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is_py3 = (sys.version_info[0] == 3)
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try:
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import simplejson as json
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except (ImportError, SyntaxError):
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import json
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if is_py2:
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def to_bytes(data):
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"""若输入为unicode， 则转为utf-8编码的bytes；其他则原样返回。"""
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if isinstance(data, unicode):
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return data.encode('utf-8')
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else:
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return data
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def to_string(data):
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"""把输入转换为str对象"""
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return to_bytes(data)
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def to_unicode(data):
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"""把输入转换为unicode，要求输入是unicode或者utf-8编码的bytes。"""
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if isinstance(data, bytes):
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return data.decode('utf-8')
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else:
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return data
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def stringify(input):
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if isinstance(input, dict):
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return dict([(stringify(key), stringify(value)) for key,value in input.iteritems()])
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elif isinstance(input, list):
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return [stringify(element) for element in input]
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elif isinstance(input, unicode):
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return input.encode('utf-8')
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else:
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return input
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builtin_str = str
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bytes = str
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str = unicode
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elif is_py3:
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def to_bytes(data):
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"""若输入为str（即unicode），则转为utf-8编码的bytes；其他则原样返回"""
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if isinstance(data, str):
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return data.encode(encoding='utf-8')
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else:
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return data
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def to_string(data):
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"""若输入为bytes，则认为是utf-8编码，并返回str"""
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if isinstance(data, bytes):
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return data.decode('utf-8')
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else:
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return data
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def to_unicode(data):
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"""把输入转换为unicode，要求输入是unicode或者utf-8编码的bytes。"""
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return to_string(data)
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def stringify(input):
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return input
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builtin_str = str
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bytes = bytes
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str = str
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