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我正在编写一个 python 应用程序。我正在尝试使用 PyYaml 将我的 python 对象转储到 yaml 中。我正在使用 Python 2.6 并运行 Ubuntu Lucid 10.04。我在 Ubuntu 包中使用 PyYAML 包:http ://packages.ubuntu.com/lucid/python/python-yaml

我的对象有 3 个文本变量和一个对象列表。大致是这样的:

ClassToDump:

   #3 text variables
   text_variable_1
   text_variable_2
   text_variable_3
   #a list of AnotherObjectsClass instances
   list_of_another_objects = [object1,object2,object3]


AnotherObjectsClass:
   text_variable_1
   text_variable_2
   text_variable_3

我要转储的类包含 AnotherObjectClass 实例的列表。这个类有几个文本变量。

PyYaml 不会以某种方式转储 AnotherObjectClass 实例中的集合。PyYAML 会转储 text_variable_1、text_variable_2 和 text_variable_3。

我正在使用以下 pyYaml API 转储 ClassToDump 实例:

classToDump = ClassToDump();
yaml.dump(ClassToDump,yaml_file_to_dump)

有没有人有将对象列表转储到 YAML 的经验?

这是实际的完整代码片段:

def write_config(file_path,class_to_dump):    
    config_file = open(file_path,'w');  
    yaml.dump(class_to_dump,config_file);

def dump_objects():

rule = Miranda.Rule();
rule.rule_condition = Miranda.ALL
rule.rule_setting = ruleSetting
rule.rule_subjects.append(rule1)
rule.rule_subjects.append(rule2)
rule.rule_verb = ruleVerb

write_config(rule ,'./config.yaml');

这是输出:

!!python/object:Miranda.Rule rule_condition: ALL rul​​e_setting: !!python/object:Miranda.RuleSetting {confirm_action: true, description: My Configuration, enabled: true, recursive: true, source_folder: source_folder} rule_verb: !!python /object:Miranda.RuleVerb {压缩:true,dest_folder:/home/zainul/Downloads,类型:移动文件}

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1 回答 1

2

PyYaml 模块会为您处理详细信息,希望以下代码段对您有所帮助

import sys
import yaml

class AnotherClass:
    def __init__(self):
        pass

class MyClass:
    def __init__(self):
        self.text_variable_1 = 'hello'
        self.text_variable_2 = 'world'
        self.text_variable_3 = 'foobar'
        self.list_of_another_objects = [
            AnotherClass(),
            AnotherClass(),
            AnotherClass()
        ]

obj = MyClass()
yaml.dump(obj, sys.stdout)

该代码的输出是:

!!python/object:__main__.MyClass
list_of_another_objects:
- !!python/object:__main__.AnotherClass {}
- !!python/object:__main__.AnotherClass {}
- !!python/object:__main__.AnotherClass {}
text_variable_1: hello
text_variable_2: world
text_variable_3: foobar
于 2010-07-13T10:32:12.110 回答