Python Unicode字符串到Javascript

Question

我想在我的json文件中获得带有单反斜杠的输出，这是我的javascript / HTML文档的输入。 它是使用vis.js进行可视化的目的，我无法摆脱Python在反斜杠之前添加反斜杠的方式。 我试图转义反斜杠并使用r''类型的字符串。

我有一本字典：

f = {'id':0,'group':'main', 'label':'Main', \
'font':{'size': 60}, 'shape': 'icon', 'icon': {'face':'Ionicons',\
'code': r'\uf276', 'size':200, 'color':'#f0a30a'}, \
'color': {'background': 'pink', 'border': 'black'}}

In [91]: print f
'{'group': 'main', 'color': {'border': 'black', 'background': 'pink'}, 'label': 'Main', 'shape': 'icon', 'font': {'size': 60}, 'id': 0, 'icon': {'size': 200, 'color': '#f0a30a', 'code': '\\uf276', 'face': 'Ionicons'}}

我正在使用json.dumps将其转储到json文件中

In [92]: json.dumps(f)
Out[92]: '{"group": "main", "color": {"border": "black", "background": "pink"}, "label": "Main", "shape": "icon", "font": {"size": 60}, "id": 0, "icon": {"size": 200, "color": "#f0a30a", "code": "\\\\uf276", "face": "Ionicons"}}'

In [93]: print json.dumps(f)
{"group": "main", "color": {"border": "black", "background": "pink"}, "label": "Main", "shape": "icon", "font": {"size": 60}, "id": 0, "icon": {"size": 200, "color": "#f0a30a", "code": "\\uf276", "face": "Ionicons"}}

我使用json.dump（filename，f）将此字符串保存到文件中，并输出以下内容：

{
    "group": "main", 
    "color": {
        "border": "black", 
        "background": "pink"
    }, 
    "label": "Main", 
    "shape": "icon", 
    "font": {
        "size": 60
    }, 
    "id": 0, 
    "icon": {
        "size": 200, 
        "color": "#f0a30a", 
        "code": "\\uf276", 
        "face": "Ionicons"
    }
} 

Answer 1

json.dumps(f, ensure_ascii=False).encode('utf8')

会给你

{
    "group": "main",
    "color": {
        "border": "black",
        "background": "pink"
    },
    "label": "Main",
    "shape": "icon",
    "font": {
        "size": 60
    },
    "id": 0,
    "icon": {
        "size": 200,
        "color": "#f0a30a",
        "code": "\xef\x89\xb6",
        "face": "Ionicons"
    }
}

编辑代码也应该是u'\'

Answer 2

包含反斜杠的字符串是原始字符串 。 它不包含所需的unicode字符，而是一个实际的反斜杠，后跟“ uf276”。

将其转换为普通字符串：

f = {'id':0,'group':'main', 'label':'Main', \
'font':{'size': 60}, 'shape': 'icon', 'icon': {'face':'Ionicons',\
'code': '\uf276', 'size':200, 'color':'#f0a30a'}, \
'color': {'background': 'pink', 'border': 'black'}}

然后json-dumping也应该起作用：

>>> print(json.dumps(f, indent=4))
{
    "shape": "icon",
    "font": {
        "size": 60
    },
    "label": "Main",
    "color": {
        "background": "pink",
        "border": "black"
    },
    "group": "main",
    "id": 0,
    "icon": {
        "face": "Ionicons",
        "color": "#f0a30a",
        "size": 200,
        "code": "\uf276"
    }
}