python Yaml、Json、Dict之间的转化

时间:2021-05-23

Json To Dict

import jsonjsonData = '{"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 jsontextDict = {"a":1,"b":2,"c":3,"d":4,"e":5}print(textDict)print(type(textDict))# 字典转化为jsontextJson = 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 yamldictText = { "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/v1kind: ClusterRoleBindingmetadata: name: admin-userroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-adminsubjects:- kind: ServiceAccount name: admin-user namespace: kube-system<class 'str'>

Json To Yaml

Json -> Dict -> Yaml

import json,yamljsonData = '{"listDict":{"a":1,"b":2,"c":3,"d":4,"e":5}}';print(jsonData)print(type(jsonData))# Json -> Dicttext = json.loads(jsonData)print(text)print(type(text))# Dict -> YamltextYaml = 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 yamlyamlText ='''apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata: name: admin-userroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-adminsubjects:- kind: ServiceAccount name: admin-user namespace: kube-system'''print(yamlText)print(type(yamlText))# Yaml -> DictdictText = yaml.load(yamlText,Loader=yaml.FullLoader)print(dictText)print(type(dictText))#############################apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata: name: admin-userroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-adminsubjects:- 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 yamlyamlText ='''apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata: name: admin-userroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-adminsubjects:- 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/v1kind: ClusterRoleBindingmetadata: name: admin-userroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-adminsubjects:- 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

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