def write(self, file, text, subvars={}, trim_leading_lf=True):
        '''write to a file with variable substitution'''
        file.write(self.substitute(text, subvars=subvars, trim_leading_lf=trim_leading_lf))
def write ( self , file , text , subvars = { } , trim_leading_lf = True ) : file . write ( self . substitute ( text , subvars = subvars , trim_leading_lf = trim_leading_lf ) )
write to a file with variable substitution