<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
State the name of an identifier for a variable that is used to store a Boolean value.<|im_end|>
<|im_start|>assistant
In general, it is recommended to have variable names describe what they contain.

For example, if you have a boolean variable that describes whether something is loaded, you could call your variable "isLoaded", "hasLoaded" or just "loaded".

Please note that different languages have different conventions for how variables should be named. For example, in python it's common to have variables in "snake_case" while in most other languages "lowerCamelCase" is used.<|im_end|>
<|im_start|>user
Could you give examples for the above 4 statements please?<|im_end|>
<|im_start|>assistant
Of course. Here is a simple program using variables named `isValid`ìsTrue` `flag` and `valid`
```
valid = True
isValid = True
flag = False
isTrue = True
if isTrue and isValid:
    if valid and flag:
        #do something
        pass
```<|im_end|>