main filename = sys.argv[1] IndexError: list index out of range [duplicate]

Question

I have a problem running the python program. When I run, it prints an error in the terminal :

main filename = sys.argv[1] IndexError: list index out of range

Would you please help me?

CODE:

def main():
filename = sys.argv[1]
rfile = open(filename, mode='r')
wfile = open(filename.split('.')[0]+'.hack',mode='w')
symbolTab = SymbolTable()
parser = Parser(rfile)
code = Code()
i = 0

while parser.hasMoreCommands():
    ctype = parser.commandType()
    if ctype == 'L_COMMAND':
        symbol = parser.symbol()
        symbolTab.addEntry(symbol,i-1)
    else:
        i += 1
    parser.advance()
rfile.close()

Answer 1

Please change filename = sys.argv[1] to filename = sys.argv[0]
For example, when you execute your python file like python3 test.py test, sys.argv[1] will be "test"

filename = os.path.basename(os.path.abspath(__file__)) just as effective