python Yaml、Json、Dict之間的轉化
阿新 • • 發佈：2020-10-20
Json To Dict
import json
jsonData = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
print(jsonData)
print(type(jsonData))
text = json.loads(jsonData)
print(text)
print(type(text))
#######################
{"a":1,"e":5}
<class 'str'>
{'a': 1,'b': 2,'c': 3,'d': 4,'e': 5}
<class 'dict'>
Dict To Json
import json
textDict = {"a":1,"e":5}
print(textDict)
print(type(textDict))
# 字典轉化為json
textJson = json.dumps(textDict)
print(textJson)
print(type(textJson))
########################
{'a': 1,'e': 5}
<class 'dict'>
{"a": 1,"b": 2,"c": 3,"d": 4,"e": 5}
<class 'str'>
Dict To Yaml
import yaml
dictText = {
"apiVersion": "rbac.authorization.k8s.io/v1","kind": "ClusterRoleBinding","metadata": {
"name": "admin-user"
},"roleRef": {
"apiGroup": "rbac.authorization.k8s.io","kind": "ClusterRole","name": "cluster-admin"
},"subjects": [
{
"kind": "ServiceAccount","name": "admin-user","namespace": "kube-system"
}
]
}
print(type(dictText))
yamlText = yaml.dump(dictText)
print(yamlText)
print(type(yamlText))
#############################3
<class 'dict'>
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system
<class 'str'>Json To Yaml
Json -> Dict -> Yaml
import json,yaml
jsonData = '{"listDict":{"a":1,"e":5}}';
print(jsonData)
print(type(jsonData))
# Json -> Dict
text = json.loads(jsonData)
print(text)
print(type(text))
# Dict -> Yaml
textYaml = yaml.dump(text)
print(textYaml)
print(type(textYaml))
#############################
{"listDict":{"a":1,"e":5}}
<class 'str'>
{'listDict': {'a': 1,'e': 5}}
<class 'dict'>
listDict:
a: 1
b: 2
c: 3
d: 4
e: 5
<class 'str'>Yaml -> Dict
import yaml
yamlText ='''
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system'''
print(yamlText)
print(type(yamlText))
# Yaml -> Dict
dictText = yaml.load(yamlText,Loader=yaml.FullLoader)
print(dictText)
print(type(dictText))
#############################
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system
<class 'str'>
{'apiVersion': 'rbac.authorization.k8s.io/v1','kind': 'ClusterRoleBinding','metadata': {'name': 'admin-user'},'roleRef': {'apiGroup': 'rbac.authorization.k8s.io','kind': 'ClusterRole','name': 'cluster-admin'},'subjects': [{'kind': 'ServiceAccount','name': 'admin-user','namespace': 'kube-system'}]}
<class 'dict'>
關於 yaml -> dict 需要注意
yaml 5.1版本後棄用了yaml.load(file)這個用法，因為覺得很不安全，5.1版本之後就修改了需要指定Loader，通過預設載入器（FullLoader）禁止執行任意函式
import yaml
yamlText ='''
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system'''
print(yamlText)
print(type(yamlText))
# yaml -> dict 沒有設定,Loader=yaml.FullLoader 執行後如下含有警告
dictText = yaml.load(yamlText)
print(dictText)
print(type(dictText))
#########################
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system
<class 'str'>
/Users/yyj/Desktop/Project/HelloBike/TimeCalc/pydict2json/dict2json.py:88: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated,as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.
dictText = yaml.load(yamlText)
{'apiVersion': 'rbac.authorization.k8s.io/v1','namespace': 'kube-system'}]}
<class 'dict'>
1、警告提示
YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated,as the default
Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.
2.主要原因
yaml 5.1版本後棄用了yaml.load(file)這個用法，因為覺得很不安全，5.1版本之後就修改了需要指定Loader，通過預設載入器（FullLoader）禁止執行任意函式
3.解決方法
1.yaml.load(f,Loader=yaml.FullLoader)
2.yaml.warnings({'YAMLLoadWarning': False}) # 全域性設定警告，不推薦
Loader的幾種載入方式
- BaseLoader--僅載入最基本的YAML
- SafeLoader--安全地載入YAML語言的子集。建議用於載入不受信任的輸入。
- FullLoader--載入完整的YAML語言。避免任意程式碼執行。這是當前（PyYAML 5.1）預設載入器呼叫yaml.load(input)（發出警告後）。
- UnsafeLoader--（也稱為Loader向後相容性）原始的Loader程式碼，可以通過不受信任的資料輸入輕鬆利用。
至此，Yaml 、Json 、Dict 之間的轉化 介紹完了
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