Why senior developers write two words like this MAX_VALUE and not like this MAXVALUE.

Question

Even I have seen that they declared a variable for list like this _LIST and deleted this LIST tell me any reason

Answer 1

Because second variant is more readable. It's a good practice

Answer 2

In Python, there is a datatype called list.

If you write:

list = [1, 2, 3]

Then you overwrite the name for the datatype list and can't use it anymore.

So you change the name just a bit.

list_ = [1, 2, 3]

Answer 3

The reasons is as follows: first : There are rules to write (variables). If you have long variable like Max value you should put underscore instead space.

Second : Helps the programmer to read and modify the code.

Third: you can search about how to write the variables. Most of the programming languages ​​have the same rules.
And Some word is Reserved word you can not use such as List in python and some programmer write List_ in this case you can use it.

Answer 4

Timur Myngbay does it makes code faster, as it is more readable