我有一个 python 脚本,想要读取一组 conda 食谱并使用一些信息更新它们(例如文件: https://github.com/williamjamir/staged-recipes/blob/850760fb63c0fc000b95ac27680ec018fa94dcb7/recipes/pyexcel-ezodf/meta.yaml ):
我正在使用这个:
from ruamel.yaml import YAML
from yaml.constructor import ConstructorError
from yaml.scanner import ScannerError
yaml = YAML(typ='jinja2')
yaml.allow_duplicate_keys = True
with open(file_name) as fp:
yalm_file = yaml.load(fp)
当我使用以下方式打印原始文件 yaml_file
时:
with open(path_file, 'w') as fp:
yaml.dump(yaml_file, fp, allow_unicode=True, explicit_start=True)
输出包含大量与类型相关的标签和注释 数据如:
--- !!python/object/apply:ruamel.yaml.comments.CommentedMap
dictitems:
about: !!python/object/apply:ruamel.yaml.comments.CommentedMap
dictitems: {home: 'https://github.com/soedinglab/xxmotif', license:
GPLv3, license_file: LICENSE,
summary: 'eXhaustive, weight matriX-based motif discovery in nucleotide sequences'}
state:
_yaml_format: !!python/object/new:ruamel.yaml.comments.Format
state: !!python/tuple
- null
- {_flow_style: false}
我该如何解决这个问题?
最佳答案
YAML
实例的 dump()
方法不接受您提供的参数 (allow_unicode=True,explicit_start=True
) 。由于您没有提供完整的工作程序,我只能猜测您(还)执行了import ruamel.yaml as yaml
(甚至import yaml
)。
由 jinja2 插件完成的转换处理标准 jinja2 模板语法(通常在使用 YAML 解析器解析之前进行处理)需要在加载和转储时完成。因此,您需要使用相同的 YAML(typ='jinja2')
实例来执行此操作:
import sys
file_name = 'meta.yaml'
from ruamel.yaml import YAML
from yaml.constructor import ConstructorError
from yaml.scanner import ScannerError
yaml = YAML(typ='jinja2')
yaml.allow_duplicate_keys = True
yaml.indent(sequence=4, offset=2)
yaml.preserve_quotes = True
# yaml.explicit_start = True
with open(file_name) as fp:
data = yaml.load(fp)
yaml.dump(data, sys.stdout)
准确给出您在往返过程中的输入:
{% set name = "pyexcel-ezodf" %}
{% set version = "0.3.3" %}
{% set sha256 = "26ddddc61c6bbe2641a15964ba57eaf92a171478e7ed9efb9ae4db1567d0998
c" %}
package:
name: {{ name|lower }}
version: {{ version }}
source:
fn: {{ name }}-{{ version }}.tar.gz
# The github url is been used because the tar.gz from pypi is missing the CONT
RIBUTORS.rst file
url: https://github.com/pyexcel/{{ name }}/archive/v{{ version }}.tar.gz
sha256: {{ sha256 }}
build:
noarch: python
number: 0
script: python setup.py install --single-version-externally-managed --record r
ecord.txt
requirements:
build:
- python
- setuptools
run:
- python
- lxml
test:
imports:
- ezodf
about:
home: https://github.com/pyexcel/pyexcel-ezodf
license: MIT
license_family: MIT
license_file: '{{ environ["RECIPE_DIR"] }}/LICENSE'
summary: 'A Python package to create/manipulate OpenDocumentFormat files'
description: |
'ezodf is a Python package to create new or open existing' +
'OpenDocument (ODF) files to extract, add, modify or delete document data' +
'forked from dead project https://bitbucket.org/mozman/ezodf' +
'format and to/from databases' +
''
dev_url: https://github.com/pyexcel/pyexcel-ezodf
extra:
recipe-maintainers:
- williamjamir
您不需要设置 allow_unicode
,这是 YAML.dump()
的默认设置。
关于python - conda 包的 yaml 文件以编程方式更新,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46677139/