SyntaxError: non-default argument follows default argument

Question

from os import system
def a(len1,hgt=len1,til,col=0):
    system(\'mode con cols=\'+len1,\'lines=\'+hgt)
    system(\'title\',til)
    system(\'color\',col)

a(64,25         


        

Answer 1

As the error message says, non-default argument til should not follow default argument hgt.

Changing order of parameters (function call also be adjusted accordingly) or making hgt non-default parameter will solve your problem.

def a(len1, hgt=len1, til, col=0):

->

def a(len1, hgt, til, col=0):

UPDATE

Another issue that is hidden by the SyntaxError.

os.system accepts only one string parameter.

def a(len1, hgt, til, col=0):
    system('mode con cols=%s lines=%s' % (len1, hgt))
    system('title %s' % til)
    system('color %s' % col)