如何在python中过滤和打印特定的json字典

Question

我在学习python的过程中遇到了一个json的问题无法攻克。

我在 python 中有来自 json 的数据集：

{
    "Sophos": {
        "detected": true,
        "result": "phishing site"
    },
    "Phishtank": {
        "detected": false,
        "result": "clean site"
    },
    "CyberCrime": {
        "detected": false,
        "result": "clean site"
    },
    "Spam404": {
        "detected": false,
        "result": "clean site"
    },
    "SecureBrain": {
        "detected": false,
        "result": "clean site"
    },
    "Hoplite Industries": {
        "detected": false,
        "result": "clean site"
    },
    "CRDF": {
        "detected": false,
        "result": "clean site"
    },
    "Rising": {
        "detected": false,
        "result": "clean site"
    },
    "Fortinet": {
        "detected": true,
        "result": "phishing site"
    },
    "alphaMountain.ai": {
        "detected": true,
        "result": "phishing site"
    },
    "Lionic": {
        "detected": false,
        "result": "clean site"
    },
    "Cyble": {
        "detected": false,
        "result": "clean site"
    }
}

我想以仅打印"detected": true的那些键和值的方式过滤这些字典。

例如我只想打印

{
    "Sophos": {
        "detected": true,
        "result": "phishing site"
    },
    "Fortinet": {
        "detected": true,
        "result": "phishing site"
    }
}

我使用 VirusTotal apikey v2 https://developers.virustotal.com/v2.0/reference/domain-report我在 python 中的代码：

parameters = {'apikey': api_key, 'resource': domain}

response = requests.get(url, params=parameters)
    
python_response = json.loads(response.text)

scans = python_response["scans"]

example = json.dumps(python_response["scans"], indent=4)

print(example)

我正在寻找一种简单易读的方法来做到这一点，以便我尽可能地理解它。 我想要 Python 中的打印结果。我为此搜索并阅读了各种解决方案（列表理解或 filter() with lambda），但它对我没有帮助。

我还在学习，如果这是一个简单的案例，请提前感谢您的理解。

预先感谢您的帮助和回答。

Answer 1

您可以使用字典理解来过滤响应字典。 请注意，在您提供的示例中，我认为您有 json 数据而不是 python true不是 python 中有效的 boolean 关键字，它应该是True 。

filtered = {k: v for k, v in orignal_dict.items() if v.get("detected") == true}

对于你的例子 -

true = True
false = False

data = {
    "Sophos": {
        "detected": true,
        "result": "phishing site"
    },
    "Phishtank": {
        "detected": false,
        "result": "clean site"
    },
    "CyberCrime": {
        "detected": false,
        "result": "clean site"
    },
    "Spam404": {
        "detected": false,
        "result": "clean site"
    },
    "SecureBrain": {
        "detected": false,
        "result": "clean site"
    },
    "Hoplite Industries": {
        "detected": false,
        "result": "clean site"
    },
    "CRDF": {
        "detected": false,
        "result": "clean site"
    },
    "Rising": {
        "detected": false,
        "result": "clean site"
    },
    "Fortinet": {
        "detected": true,
        "result": "phishing site"
    },
    "alphaMountain.ai": {
        "detected": true,
        "result": "phishing site"
    },
    "Lionic": {
        "detected": false,
        "result": "clean site"
    },
    "Cyble": {
        "detected": false,
        "result": "clean site"
    }
}


filtered = {k: v for k, v in data.items() if v.get("detected") == true}
print(json.dumps(filtered, indent=4))

Output：

{
    "Sophos": {
        "detected": true,
        "result": "phishing site"
    },
    "Fortinet": {
        "detected": true,
        "result": "phishing site"
    },
    "alphaMountain.ai": {
        "detected": true,
        "result": "phishing site"
    }
}

Answer 2

您可以运行一个循环，然后进行检查

for key, value in example.items():
    if value["detected"] == True:
        print(key, value)

或者，您可以使用filter() function 来实现它。

list(filter(lambda x: x["detected"] == True, example.values()))

Output：

[{'detected': True, 'result': 'phishing site'}, {'detected': True, 'result': 'phishing site'}, {'detected': True, 'result': 'phishing site'}]

Answer 3

一种方法可以是：

for i in jsondump:
    if jsondump[i]['detected'] == True:
        print(jsondump[i])

就好像我们在 Jsondump 中循环使用 for each 一样，它会导致给出所有保存数据的 object 名称，即

for i in jsondump:
     print(i)

上面的代码将导致：

Sophos  
Phishtank  
CyberCrime  
..  
..  
Fortinet  
alphaMountain.ai
Lionic  
Cyble  

现在如果我们有密钥，我们可以使用 jsondump[i] 循环并将值存储在 'detected' 中，因此我们将传入 jsondump[i]['detected'] 以检查它是否为真。

Answer 4

在这里我们可以使用字典理解

new_dict = { key:val for (key,val) in example.items() if(value["detected"] == True)}

将根据您想要的条件创建一个新列表，检测到的条件应该为真

在这里，我们遍历整个字典，然后对于也是字典的每个元素（在本例中为 val），我们检查检测到的值是否为 True 然后我们只将整个字典添加到 new_dict

Answer 5

您可以按值使用过滤器 Python 字典使用通用 Function和 lambda，检查以下示例：

dataset = {
    "Sophos": {
        "detected": True,
        "result": "phishing site"
    },
    "Phishtank": {
        "detected": False,
        "result": "clean site"
    },
    "CyberCrime": {
        "detected": False,
        "result": "clean site"
    },
    "Spam404": {
        "detected": False,
        "result": "clean site"
    },
    "SecureBrain": {
        "detected": False,
        "result": "clean site"
    },
    "Hoplite Industries": {
        "detected": False,
        "result": "clean site"
    },
    "CRDF": {
        "detected": False,
        "result": "clean site"
    },
    "Rising": {
        "detected": False,
        "result": "clean site"
    },
    "Fortinet": {
        "detected": True,
        "result": "phishing site"
    },
    "alphaMountain.ai": {
        "detected": True,
        "result": "phishing site"
    },
    "Lionic": {
        "detected": False,
        "result": "clean site"
    },
    "Cyble": {
        "detected": False,
        "result": "clean site"
    }
}

def filter_dict(d, f):
    ''' Filters dictionary d by function f. '''
    newDict = dict()
    # Iterate over all (k,v) pairs in dict
    for key, value in d.items():
        # Is condition satisfied?
        if f(key, value):
            newDict[key] = value
    return newDict

print(filter_dict(dataset, lambda k, v: v['detected'] == True))

Output：

{'Sophos': {'detected': True, 'result': 'phishing site'}, 'Fortinet': {'detected': True, 'result': 'phishing site'}, 'alphaMountain.ai': {'detected': True, 'result': 'phishing site'}}