I can't quite recall when electrum released its first version. As a rule, I don't believe everything I hear on the internet. the seed is from feb 2011. I can't remember what wallet created the mnemonic. could have been bitcoin-core or electrum or mabye another one. I cant accurately rememebr, 10 years ago.
And all I found was like 30 lines of code on that link. I need a electrum version 0.3 or before like 0.2 but I am not a programmer and can't compile complex programs. I need a complete wallet file as an executable or for use with python.