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