[英]Can I delete a specific value within a section of a config.ini file using Python configparser?
I have a config.ini file and I am trying to delete a specific value in a section of my config.ini file.我有一个 config.ini 文件,我正在尝试删除 config.ini 文件部分中的特定值。 I basically want to delete an index within a list.
我基本上想删除列表中的索引。 The config.ini file is:
config.ini文件是:
[INPUT]
intervals = [[4000, 6000], [25000, 55000]]
For example, I want to delete [4000, 6000]
, so that the new config.ini file becomes:比如我想删除
[4000, 6000]
,这样新的config.ini文件就变成了:
[INPUT]
intervals = [[25000, 55000]]
My code is below with two functions, one to import the contents of config.ini ( load_args()
) and another to delete a section of config.ini ( delete_args()
).我的代码在下面有两个函数,一个是导入 config.ini 的内容(
load_args()
),另一个是删除 config.ini 的一部分( delete_args()
)。 The delete function is based off an answer to How to remove a section from an ini file using Python ConfigParser?删除 function 是基于如何使用 Python ConfigParser?
import configparser
import ast
def load_args():
config = configparser.ConfigParser()
config.read('config.ini')
interval = ast.literal_eval(config['INPUT']['intervals'])
print(interval)
load_args()
def delete_args():
config = configparser.ConfigParser()
with open('config.ini', 'r+') as s:
config.readfp(s)
config.remove_section('INPUT')
s.seek(0)
config.write(s)
s.truncate()
interval = ast.literal_eval(config['INPUT']['intervals'])
print(interval)
delete_args()
The current delete_args()
function above deletes everything in the config.ini.上面的当前
delete_args()
function 删除了 config.ini 中的所有内容。 I understand that delete_args()
needs a way to find the value [4000, 6000]
in config.ini , so I was wondering if is possible to pass in [4000, 6000]
as an argument into delete_args()
that then finds the section [INPUT]
, and finds the specified interval ( [4000, 6000]
) within intervals
and deletes it.我知道
delete_args()
需要一种在config.ini中找到值[4000, 6000]
的方法,所以我想知道是否可以将[4000, 6000]
作为参数传递给delete_args()
然后找到该部分[INPUT]
,并在区间内查找指定intervals
( [4000, 6000]
)并将其删除。
If I understand you correctly you want to remove a specific interval from the multi-dimensional list by argument in your delete_args
function when you update the config.ini.如果我理解正确,您希望在更新 config.ini 时通过
delete_args
function 中的参数从多维列表中删除特定间隔。 I came up with this solution:我想出了这个解决方案:
import configparser
import ast
parser = configparser.ConfigParser()
interval = []
def load_args():
global interval
parser.read('config.ini')
interval = ast.literal_eval(parser['INPUT']['intervals'])
print(interval)
load_args()
def delete_args(index):
global interval
interval.pop(index)
parser.set('INPUT', 'intervals', str(interval))
with open("config.ini", "w+") as configfile:
parser.write(configfile)
def delete_args2(ele):
global interval
interval = [x for x in interval if x != ele]
parser.set('INPUT', 'intervals', str(interval))
with open("config.ini", "w+") as configfile:
parser.write(configfile)
#delete_args(0)
delete_args2([4000, 6000])
delete_args(0)
load_args()
Output Output
[[4000, 6000], [25000, 55000]]
[[25000, 55000]]
I used a bit different update strategy, and just pop()
the element at the specifid index.我使用了一些不同的更新策略,只是
pop()
指定索引处的元素。 I think this is a very clean way.我认为这是一种非常干净的方式。 If you prefer to pass in a value to remove you can use
interval.remove(ele)
or something more robust like [x for x in interval if x != ele]
instead of the pop(index)
.如果您更喜欢传入一个值来删除,您可以使用
interval.remove(ele)
或更强大的东西,例如[x for x in interval if x != ele]
而不是pop(index)
。 Note: I've defined interval
globally for the sake of simplicity but that's not important.注意:为了简单起见,我已经在全局范围内定义了
interval
,但这并不重要。
This is a little bit different approach, but still might work for your purpose.这是一种有点不同的方法,但仍然可能适用于您的目的。 Instead of deleting the
intervals
we may update it as follows:我们可以按如下方式更新它,而不是删除
intervals
:
import configparser
def update_args(section, element, value):
config = configparser.ConfigParser()
config.read('config.ini')
config.set(section, element, value)
with open('config.ini', 'w') as f:
config.write(f)
update_args("INPUT", "intervals", "[25000, 55000]")
By the way I have just heard about ini
files here in this question and try to solve this problem.顺便说一句,我刚刚在这个问题中听说过
ini
文件,并尝试解决这个问题。 So, I am hoping that I did not something completely unrelated to the question.所以,我希望我没有做与这个问题完全无关的事情。
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