• python2不同版本安装json模块


    1、常用json库主要有json-py和simplejson

    1) json-py 包含json和minjson,用法一样

    Python 2.4.3 (#1, Jan  9 2013, 06:47:03) 
    [GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import json
    >>> import minjson
    >>> a = {'a':5, 'b':4}
    >>> b = json.write(a) 
    >>> c = json.read(b)  
    >>> a
    {'a': 5, 'b': 4}
    >>> b
    '{"a":5,"b":4}'
    >>> c
    {'a': 5, 'b': 4}
    >>> d = minjson.write(a)
    >>> e = minjson.read(d)
    >>> d
    '{"a": 5, "b": 4}'
    >>> e
    {'a': 5, 'b': 4}
    >>>

    2) simplejson

    # python 2.6以上:
    import json
    json.loads(js_obj)   
    json.dumps(py_obj)
    
    # python 2.6以下:
    import simplejson as json
    json.loads(js_obj)   
    json.dumps(py_obj)

    2、安装simplejson

    python2.6以上内置json解释库,是 smiplejson,python2.6以下没有内置的json,要手动安装。下载地址是  https://pypi.python.org/packages/source/s/simplejson/simplejson-2.0.9.tar.gz。如果下载太慢可使用pypi豆瓣源

    [root@LuGu_10_1_80_198 py]# cd simplejson-2.0.9
    [root@LuGu_10_1_80_198 simplejson-2.0.9]# /usr/bin/python2.4 setup.py install
    
    [root@LuGu_10_1_80_198 simplejson-2.0.9]# /usr/bin/python2.4 
    Python 2.4.3 (#1, Jan  9 2013, 06:47:03) 
    [GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import simplejson as json
    >>> a = {'a': 5, 'b': 4}
    >>> b = json.dumps(a)
    >>> b
    '{"a": 5, "b": 4}'
    >>> c = json.loads(b)
    >>> c
    {u'a': 5, u'b': 4}
    >>> type(c)
    <type 'dict'>
    >>> type(b)
    <type 'str'>
    >>>

    3、安装脚本 install_simplejson.sh

    #!/bin/bash
    
    cat >/usr/local/src/test.py <<EOF
    #!/usr/bin/python
    import sys
    
    try:
        import json
    except ImportError:
        try:
            import simplejson as json
        except ImportError:
            sys.exit(1)
    sys.exit(0)
    EOF
    
    /usr/bin/python /usr/local/src/test.py &>/dev/null
    if [ $? -eq 0 ];then
        echo "json or simplejson have installed"
        exit 0
    fi
    
    # json="json-py-3_4.zip"  # python 2.6之前需要安装simplejson 2.6和之后内置json
    simplejson="simplejson-2.0.9.tar.gz"
    setuptool="setuptools-0.6c7-py2.4.egg"
    
    rsync -arv rsync://root@10.1.17.217/upload/simplejson-forpy /usr/local/src &>/dev/null 
    
    cd /usr/local/src/simplejson-forpy
    
    tar -xf ${simplejson} && softwaredir=`echo ${simplejson} | sed 's/.tar.gz//g'` 
    mv ${setuptool} ${softwaredir} && cd ${softwaredir}
    /usr/bin/python setup.py install >/dev/null 2>&1
    cd /usr/local/src && rm -rf simplejson-forpy
    
    /usr/bin/python /usr/local/src/test.py &>/dev/null
    if [ $? -eq 0 ];then
        rm -rf /usr/local/src/test.py
        echo "Python simplejson Install OK" && exit 0
    else
        rm -rf /usr/local/src/test.py
        echo "python simplejson  Install OK" && exit 1    
    fi

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  • 原文地址:https://www.cnblogs.com/lxmhhy/p/6029556.html
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