Syntax Error line 15

Good afternoon
I'm trying to decrypt my WhatsApp messages using python and keep getting the following error

 File "WhatsAppGDExtract.py", line 15
    sig = 38a0f7d505fe18fec64fbf343ecaaaf310dbd799
                                                 ^
SyntaxError: invalid syntax

C:\Users\Antonio\Desktop\WhatsApp-GD-Extractor-master>

Any help, please?