在带有ruamel.yaml的yaml文件的第一行中添加了未完成的缩进和破折号

Question

我目前正在使用以下代码加载到单个文档模板YAML文件中，对其进行轻微更改，并生成(即转储(不同的新部署文件。代码如下：

import yaml
import copy
import ruamel.yaml
from ruamel.yaml.scalarstring import (DoubleQuotedScalarString as dq, 
SingleQuotedScalarString as sq)
#As requested, below a summary of the functionality of the function define_exp_parameters
def define_exp_parameters(experiment_template, deployments):
deployment_list = []
for duration in range(30, 71, 1):
for cpu_cores in range(1, 4):

exp_doc[0]['spec']['annotationCheck'] = 'true'
deployment_list.append(copy.deepcopy(exp_doc)) 
return deployment_list   

testyaml = ruamel.yaml.YAML()

with open(template_dir, 'r') as read_file:
deployments = testyaml.load_all(read_file)
deployments = list(deployments)
# define_exp_parameters is used to generate different YAML deployments, each of which are added to a list, which is returned. The list basically consists of x YAML deployment definitions which are later dumped in seperate files.
deployments = define_exp_parameters(experiment_template, deployments)

i = 1
for deployment in deployments:
with open(save_dir) as created_file:

testyaml.default_flow_style = False

testyaml.dump(deployment, created_file)

i += 1

模板如下：

apiVersion: litmuschaos.io/v1alpha1
kind: ChaosEngine
metadata:
name: teastore-chaos
namespace: default
spec:
annotationCheck: 'false'
engineState: active
appinfo:
appns: default
applabel: app=teastore
appkind: deployment
chaosServiceAccount: litmus-admin
components:
runner:
runnerAnnotations:
sidecar.istio.io/inject: 'false'
jobCleanUpPolicy: delete
experiments:
- name: pod-cpu-hog

这会产生具有以下结构的文件：

- apiVersion: litmuschaos.io/v1alpha1
kind: ChaosEngine
metadata:
name: teastore-chaos
namespace: default
spec:
annotationCheck: 'false'
engineState: active
appinfo:
appns: default
applabel: app=teastore
appkind: deployment
chaosServiceAccount: litmus-admin
components:
runner:
runnerAnnotations:
sidecar.istio.io/inject: 'false'
jobCleanUpPolicy: delete
experiments:
- name: pod-cpu-hog

然而，我想要的结构如下(即，与模板相同(：

apiVersion: litmuschaos.io/v1alpha1
kind: ChaosEngine
metadata:
name: teastore-chaos
namespace: default
spec:
annotationCheck: 'false'
engineState: active
appinfo:
appns: default
applabel: app=teastore
appkind: deployment
chaosServiceAccount: litmus-admin
components:
runner:
runnerAnnotations:
sidecar.istio.io/inject: 'false'
jobCleanUpPolicy: delete
experiments:
- name: pod-cpu-hog

基本上，第一行不应该有破折号(由于某种原因，它是自动生成/添加的，因为它不在原始模板文件中(，整个结构中也不应该有额外的第一个缩进(我认为它与破折号一起出现(。我使用ruamel.yaml进行转储，因为它在字符串中保留了明确的单个报价(使用导入的包(。我试着寻找类似的案例和ruamel.yaml文档，但我找不到原因/解决方案。

Answer 1

如果没有define_exp_parameters()的来源，就不可能准确描述出了什么问题。但在调用之前，deployments是包含单个元素的list，该单个元素是dict(具有关键字apiVersion、kind等(。在调用之后，deployments是单个元素列表(哪些元素是被提及的dict(。您对"；外部"；列出并转储单个元素列表，该列表以块样式提供-，它是块序列元素指示符。

如果您不能修复define_exp_parameters()以再次返回每个元素都是dict的列表，则可以转储deployment:的第一个元素

testyaml.dump(deployment[0], created_file)