merge json (incomplete)

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from pprint import pprinta = {        "_types" : [            "InterimResponseHistory"            ],        "uptime" : "2013-04-26T06:16:06.638Z",        "permission_id" : "w131",        "_cls" : "InterimResponseHistory",        "response" : {            "current_item_id" : "2013-T5-LJTL-002",            "items" : [                {                    "value" : {                        "real" : "D",                        "form" : "2,"                        },                    "completed" : True,                    "marked" : False,                    "time_spent" : 1,                    "retry_count" : 0,                    "submitted" : False,                    "type" : "sc",                    "id" : "2013-T5-LJTL-002"                    }                ],            "current_group_id" : "3",            "current_section_id" : "1",            "time_spent" : 0,            "permit" : "w131",            "sections" : [                {                    "time_spent" : 332,                    "status" : "",                    "id" : "1"                    },                {                    "time_spent" : 0,                    "status" : "",                    "id" : "2"                    }                ],            "id" : "F05"            }        }b = {        "_types" : [            "InterimResponseHistory"            ],        "uptime" : "2013-04-26T06:16:28.639Z",        "permission_id" : "w131",        "_cls" : "InterimResponseHistory",        "response" : {            "current_item_id" : "2013-T2-SWCL-003",            "items" : [                {                    "value" : {                        "real" : "D",                        "form" : "2,"                        },                    "completed" : True,                    "marked" : False,                    "time_spent" : 2,                    "retry_count" : 0,                    "submitted" : False,                    "type" : "sc",                    "id" : "2013-T2-SWCL-003"                    }                ],            "current_group_id" : "4",            "current_section_id" : "1",            "time_spent" : 0,            "permit" : "w131",            "sections" : [                {                    "time_spent" : 354,                    "status" : "",                    "id" : "1"                    },                {                    "time_spent" : 0,                    "status" : "",                    "id" : "2"                    }                ],            "id" : "F05"            }        }def merge(former, latter):    if type(former) != type(latter):        return latter    if type(former) not in [dict, list]:        return latter    if type(latter) == dict:        for key in latter.keys():            if key not in former:                former[key] = latter[key]            else:                former[key] = merge(former[key], latter[key])        return former    if type(latter) == list:        for item in latter:            if type(item) not in [dict, list]:                try:                    former.index(item)                except:                    former.append(item)            else:                if type(item) == dict:                    iid = item.get('id', None)                    flag = True                    if iid:                        for fitem in former:                            if type(fitem) == dict and fitem.get('id', None) == iid:                                merge(fitem, item)                                flag = False                                break                    if flag:                        former.append(item)                if type(item) == list:                    index = latter.index(item)                    try:                        former.index(index)                    except:                        if former[index] == list:                            merge(former[index], item)                        else:                            former.append(item)        return formerprint 'before:'print 'a ---> ',pprint(a)print 'b ---> ',pprint(b)c = merge(a, b)print '-------------'print 'after:'print 'c ---> ', pprint(c)

$ python mergejson.py before:a ---> {'_cls': 'InterimResponseHistory', '_types': ['InterimResponseHistory'], 'permission_id': 'w131', 'response': {'current_group_id': '3',              'current_item_id': '2013-T5-LJTL-002',              'current_section_id': '1',              'id': 'F05',              'items': [{'completed': True,                         'id': '2013-T5-LJTL-002',                         'marked': False,                         'retry_count': 0,                         'submitted': False,                         'time_spent': 1,                         'type': 'sc',                         'value': {'form': '2,', 'real': 'D'}}],              'permit': 'w131',              'sections': [{'id': '1', 'status': '', 'time_spent': 332},                           {'id': '2', 'status': '', 'time_spent': 0}],              'time_spent': 0}, 'uptime': '2013-04-26T06:16:06.638Z'}b ---> {'_cls': 'InterimResponseHistory', '_types': ['InterimResponseHistory'], 'permission_id': 'w131', 'response': {'current_group_id': '4',              'current_item_id': '2013-T2-SWCL-003',              'current_section_id': '1',              'id': 'F05',              'items': [{'completed': True,                         'id': '2013-T2-SWCL-003',                         'marked': False,                         'retry_count': 0,                         'submitted': False,                         'time_spent': 2,                         'type': 'sc',                         'value': {'form': '2,', 'real': 'D'}}],              'permit': 'w131',              'sections': [{'id': '1', 'status': '', 'time_spent': 354},                           {'id': '2', 'status': '', 'time_spent': 0}],              'time_spent': 0}, 'uptime': '2013-04-26T06:16:28.639Z'}-------------after:c ---> {'_cls': 'InterimResponseHistory', '_types': ['InterimResponseHistory'], 'permission_id': 'w131', 'response': {'current_group_id': '4',              'current_item_id': '2013-T2-SWCL-003',              'current_section_id': '1',              'id': 'F05',              'items': [{'completed': True,                         'id': '2013-T5-LJTL-002',                         'marked': False,                         'retry_count': 0,                         'submitted': False,                         'time_spent': 1,                         'type': 'sc',                         'value': {'form': '2,', 'real': 'D'}},                        {'completed': True,                         'id': '2013-T2-SWCL-003',                         'marked': False,                         'retry_count': 0,                         'submitted': False,                         'time_spent': 2,                         'type': 'sc',                         'value': {'form': '2,', 'real': 'D'}}],              'permit': 'w131',              'sections': [{'id': '1', 'status': '', 'time_spent': 354},                           {'id': '2', 'status': '', 'time_spent': 0}],              'time_spent': 0}, 'uptime': '2013-04-26T06:16:28.639Z'}

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找零：现在有1分、2分、5分的硬币各无限枚，要凑成1元有多少种凑法?

#coding: utf8def charge(a, coins, i):    #将总数为a的现金换成n种硬币的不同方式的数目等于    #1, 将现金数a换成除第一种硬币之外所有其他硬币的不同方式数目， 加上    #2, 将现金数a-d换成所有种类的硬币的不同方式数目， d是第一种硬币的面值    if a == 0: return 1    if a < 0 or i >= len(coins): return 0    used = charge(a - coins[i], coins, i)    notUsed = charge(a, coins, i+1)    return used + notUsedprint charge(100, [1, 2, 5], 0)def charge2(a, coins):    opt = [0] * (a + 1)    opt[0] = 1    #第一层循环计算包含第i种零钱时j元钱的组合数目    #第二层循环j(j>coins[i]）元钱的组合数目    for i in range(len(coins)):        for j in range(coins[i], a + 1):            opt[j] += opt[j - coins[i]]    return opt[a]print charge2(100, [1,2,5])

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很多时候，我们需要将一些大的文件进行跨网传输，一个文件动不动几十G,当你的带宽资源紧张的时候，传输这样几个文件会花10小时，甚至几天。

nc传输文件，通过以下方法，将加快文件传输，希望对大家有所帮助。

环境：
server1 源地址

server2 目标地址

1.安装nc，多数linux发行版都默认安装了
apt-get install netcat

2.server2上操作
进入data目录，确保有足够的空间，然后启动监听
cd /data
nc -l 23456 | tar xvzf –

3.server1上操作
tar cvzf – /var/lib/mysql | nc server2 23456