Yaml 、Json 、Dict 之间的转化

Yaml 、Json 、Dict 之间的转化

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,"b":2,"c":3,"d":4,"e":5}
<class 'str'>
{'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5}
<class 'dict'>

Dict To Json

import json
textDict = {"a":1,"b":2,"c":3,"d":4,"e":5}
print(textDict)
print(type(textDict))
# 字典转化为json
textJson = json.dumps(textDict)
print(textJson)
print(type(textJson))

########################

{'a': 1, 'b': 2, 'c': 3, 'd': 4, '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,"b":2,"c":3,"d":4,"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,"b":2,"c":3,"d":4,"e":5}}
<class 'str'>
{'listDict': {'a': 1, 'b': 2, 'c': 3, 'd': 4, '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'>

关于 yaml  -> dict 需要注意

 yaml 5.1版本后弃用了yaml.load(file)这个用法，因为觉得很不安全，5.1版本之后就修改了需要指定Loader，通过默认加载​​器（FullLoader）禁止执行任意函数

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 没有设置 ,Loader=yaml.FullLoader 执行后如下含有警告
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', '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'>

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版本后弃用了yaml.load(file)这个用法，因为觉得很不安全，5.1版本之后就修改了需要指定Loader，通过默认加载​​器（FullLoader）禁止执行任意函数

3.解决方法

1.yaml.load(f, Loader=yaml.FullLoader)

2.yaml.warnings({'YAMLLoadWarning': False}) # 全局设置警告，不推荐

Loader的几种加载方式

BaseLoader--仅加载最基本的YAML

SafeLoader--安全地加载YAML语言的子集。建议用于加载不受信任的输入。

FullLoader--加载完整的YAML语言。避免任意代码执行。这是当前（PyYAML 5.1）默认加载器调用
yaml.load(input)（发出警告后）。
UnsafeLoader--（也称为Loader向后兼容性）原始的Loader代码，可以通过不受信任的数据输入轻松利用。

至此，Yaml 、Json 、Dict 之间的转化 介绍完了