Question

我想根据一个节的键之一中的数值对.ini文件中的节进行排序。

我尝试使用此处描述的OrderedDict方法，但对我来说不起作用（Define order of config.ini entries when writing to file with configparser?）。

INI文件：

[DATA] 
datalist = ALL, cc, ch

[DATA.dict]

[DATA.dict.ALL] 
type = Default 
from = 748.0 
to = 4000.0 
line = 0

[DATA.dict.cc] 
type = Energy 
from = 3213.9954023 
to = 3258.85057471 
line = 1

[DATA.dict.ch] 
type = Energy 
from = 1127.11016043 
to = 1210.58395722 
line = 2

目标是按照'from'值对部分进行排序，并更改行值以匹配该值，即'h'部分应更改为line = 1并向上移动。

我编写了代码以列出“ from”值并根据该顺序更改“ line”值。我还获得了将“数据列表”以正确顺序放置的代码。我只是不知道如何实际获取各个部分以更改顺序。

现在我的输出文件如下：

[DATA]
datalist = ALL, h, cc

[DATA.dict]

[DATA.dict.ALL]
type = Default
from = 748.0
to = 4000.0
line = 0

[DATA.dict.cc]
type = Energy
from = 3213.9954023
to = 3258.85057471
line = 2

[DATA.dict.h]
type = Energy
from = 1127.11016043
to = 1210.58395722
line = 1

我希望它看起来像这样：

[DATA]
datalist = ALL, h, cc

[DATA.dict]

[DATA.dict.ALL]
type = Default
from = 748.0
to = 4000.0
line = 0

[DATA.dict.h]
type = Energy
from = 1127.11016043
to = 1210.58395722
line = 1

[DATA.dict.cc]
type = Energy
from = 3213.9954023
to = 3258.85057471
line = 2

我正在尝试使用此代码，但它对我也不起作用。

 config._sections = collections.OrderedDict(sorted(config._sections.items(), key=lambda x: getattr(x, 'from') ))

谢谢！

Answer 1

ConfigParser在内部使用OrderedDict，因此您需要按照需要的顺序重新填充解析器：

from configparser import ConfigParser
from io import StringIO

ini_file = StringIO('''
[x]
hello = 123

[a]
from = 5.0

[b]
from = 3.0
''')

parser = ConfigParser()
parser.read_file(ini_file)


parser2 = ConfigParser()
sortable_sections = [s for s in parser if 'from' in parser[s]]
other_sections = [s for s in parser if 'from' not in parser[s]]

for s in other_sections:
    parser2[s] = parser[s]

for s in sorted(sortable_sections, key=lambda s: parser[s].getfloat('from')):
    parser2[s] = parser[s]

f = StringIO()
parser2.write(f)
f.seek(0)
print(f.read())

输出：

[x]
hello = 123

[b]
from = 3.0

[a]
from = 5.0

如何使用Python更改INI文件中节的顺序？

1 个答案: