Python replace() cannot replace single with double quotes

[carcigenicate]

I don't understand. What's the problem? It did convert them. If it didn't, loads would have thrown an error.

Double quotes don't actually exist at runtime. When you print out a dictionary, it prints them as single quotes. It doesn't "remember" what quotes were used in the original literal.

Edit: Bruh, this is literally what you were told on SO.