yaml.load与yaml.dump

YAML是一种直观的能够被电脑识别的的数据序列化格式&＃xff0c;容易被人类阅读&＃xff0c;并且容易和脚本语言交互。YAML类似于XML&＃xff0c;但是语法比XML简单得多&＃xff0c;对于转化成数组或可以hash的数据时是很简单有效的。

读取yaml文件数据

python通过open方式读取文件数据&＃xff0c;再通过load函数将数据转化为列表或字典&＃xff1b;

import yaml
import osdef get_yaml_data(yaml_file):# 打开yaml文件print("***获取yaml文件数据***")file &＃61; open(yaml_file, &＃39;r&＃39;, encoding&＃61;"utf-8")file_data &＃61; file.read()file.close()print(file_data)print("类型&＃xff1a;", type(file_data))# 将字符串转化为字典或列表print("***转化yaml数据为字典或列表***")data &＃61; yaml.load(file_data)print(data)print("类型&＃xff1a;", type(data))return data
current_path &＃61; os.path.abspath(".")
yaml_path &＃61; os.path.join(current_path, "config.yaml")
get_yaml_data(yaml_path)输出&＃xff1a;
"""
***获取yaml文件数据***
# yaml键值对&＃xff1a;即python中字典
usr: my
psw: 123455
类型&＃xff1a;
***转化yaml数据为字典或列表***
{&＃39;usr&＃39;: &＃39;my&＃39;, &＃39;psw&＃39;: 123455}
类型&＃xff1a;
"""


yaml文件数据为键值对

&＃xff08;1&＃xff09;yaml文件中内容为键值对&＃xff1a;

# yaml键值对&＃xff1a;即python中字典
usr: my
psw: 123455
s: " abc\n"


python解析yaml文件后获取的数据&＃xff1a;

{&＃39;usr&＃39;: &＃39;my&＃39;, &＃39;psw&＃39;: 123455, &＃39;s&＃39;: &＃39; abc\n&＃39;}


2&＃xff09;yaml文件中内容为“键值对’嵌套"键值对"

# yaml键值对嵌套&＃xff1a;即python中字典嵌套字典
usr1:name: apsw: 123
usr2:name: bpsw: 456


python解析yaml文件后获取的数据&＃xff1a;

{&＃39;usr1&＃39;: {&＃39;name&＃39;: &＃39;a&＃39;, &＃39;psw&＃39;: 123}, &＃39;usr2&＃39;: {&＃39;name&＃39;: &＃39;b&＃39;, &＃39;psw&＃39;: 456}}


&＃xff08;3&＃xff09;yaml文件中“键值对”中嵌套“数组”

# yaml键值对中嵌套数组
usr3:- a- b- c
usr4:- b


yaml文件数据为数组

&＃xff08;1&＃xff09;yaml文件中内容为数组

# yaml数组
- a
- b
- 5


python解析yaml文件后获取的数据&＃xff1a;

[&＃39;a&＃39;, &＃39;b&＃39;, 5]


&＃xff08;2&＃xff09;yaml文件“数组”中嵌套“键值对”

# yaml"数组"中嵌套"键值对"- usr1: aaa
- psw1: 111usr2: bbbpsw2: 222


python解析yaml文件后获取的数据

[{&＃39;usr1&＃39;: &＃39;aaa&＃39;}, {&＃39;psw1&＃39;: 111, &＃39;usr2&＃39;: &＃39;bbb&＃39;, &＃39;psw2&＃39;: 222}]


load函数中的Loader&＃61;yaml.FullLoader

#读取clinical的yaml文件
def read_clin_file(clinfile):with open(clinfile,&＃39;r&＃39;) as CLIN:#备注&＃xff1a;yaml版本5.1之后弃用&＃xff0c;YAMLLoadWarning: calling yaml.load() without Loader&＃61;... is deprecatedclin_info &＃61; yaml.load(CLIN,Loader&＃61;yaml.FullLoader) #加上Loader&＃61;yaml.FullLoader 避免警告。name &＃61; clin_info[&＃39;name&＃39;]pro_id &＃61; clin_info[&＃39;sample_id&＃39;]return(name,pro_id)


yaml.dump 建立一个yaml文件

with open(&＃39;C:\\Users\\51102\\Desktop\\123\\iddnfo.yaml&＃39;,&＃39;w&＃39;) as ff:aproject &＃61; {&＃39;name&＃39;: &＃39;Silenthand Olleander&＃39;,&＃39;race&＃39;: &＃39;Human&＃39;,&＃39;traits&＃39;: [&＃39;ONE_HAND&＃39;, &＃39;ONE_EYE&＃39;]}yaml.dump(aproject,ff)ff.close()


import yaml
aproject &＃61; {&＃39;name&＃39;: &＃39;Silenthand Olleander&＃39;,&＃39;race&＃39;: &＃39;Human&＃39;,&＃39;traits&＃39;: [&＃39;ONE_HAND&＃39;, &＃39;ONE_EYE&＃39;]}print(yaml.dump(aproject&＃xff0c;))


参考&＃xff08;感谢&＃xff09;
https://www.cnblogs.com/sunbeibei/p/13750991.html
https://www.cnblogs.com/klb561/p/9326677.html