Naming convention violation (1)

[HolQue]

The naming convention tells: Key names have to start with a letter, digit or underscore.

Therefore this name is invalid:

"$A" : 1

Result:

'Invalid key name: "$A". Key names have to start with a letter, digit or underscore.'

But this is accepted:

"$A:" : 1

Result:

DotDict({'$A:': 1})

Why does the colon at the end of the key name makes a difference here?

In both cases the name starts with a character that is not a letter, not a digit and not an underscore. Therefore both names are invalid.

[HolQue]

Because the name is accepted, I try to use this name:

"$A:" : 1,
"p01" : ${$A:}

This causes an aftereffect:

Error: 'local variable 'tmpList03' referenced before assignment'!

[HolQue]

Also colons only are accepted as key name:

":::" : 1

But should not.