用Python编辑YAML文件 [英] Editing YAML file by Python

问题描述

我有一个YAML文件，如下所示：

I have a YAML file that looks like this:

# Sense 1
- name  : sense1
  type  : float
  value : 31

# sense 2
- name  : sense2
  type  : uint32_t
  value : 1488

# Sense 3
- name  : sense3
  type  : int32_t
  value : 0

- name  : sense4
  type  : int32_t
  value : 0
- name  : sense5
  type  : int32_t
  value : 0
- name  : sense6
  type  : int32_t
  value : 0

我想使用Python打开此文件，更改某些值（请参见上文）并关闭文件。我该怎么做？

I want to use Python to open this file, change some of the values (see above) and close the file. How can I do that ?

例如，我想设置sense2 [value] = 1234，保持YAML输出不变。

For instance I want to set sense2[value]=1234, keeping the YAML output the same.

推荐答案

with open("my_file.yaml") as f:
     list_doc = yaml.load(f)

for sense in list_doc:
    if sense["name"] == "sense2":
         sense["value"] = 1234

with open("my_file.yaml", "w") as f:
    yaml.dump(list_doc, f)

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