根据某个键值（LEDbrightness）从.txt文件中删除一行

问题描述

i想要根据一些关键值（LEDbrightness）从.txt文件中删除一行。

例如：我将拥有LEDbrightness = 2 in。 txt文件。要么我需要将LEDbrightness的值从2更改为3，要么我需要删除整行LEDbrightness = 2并需要添加LEDbrightness = 3。我可以补充一点。但它增加了现有的。

LEDbrightness = 2

LEDbrightness = 3



i不能删除LEDbrightness = 2。请帮帮我。我真的陷入了这个。

解决方案

Hi,
i want to remove a line from .txt file based on some key value(LEDbrightness).
for eg: i will have LEDbrightness=2 in .txt file . Either i need to change the value of LEDbrightness from 2 to 3 or i need to remove the entire line LEDbrightness=2 and need to add LEDbrightness=3. I am able to add that. but it is adding to the existing one.
LEDbrightness=2
LEDbrightness=3

i am not able to remove LEDbrightness=2. Please help me on this. i m really stuck in this.

解决方案

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