def __init__(self, ddir, fname, dt, idx=0, t=0. ): self.dw = dict() self.out_idx = idx # Index for output file self.idx = idx # Iteration index self.t = t # Initial time self.dt = dt self.fname = ddir + '/' + fname # Output file name self.nzeros = 4 # Number of digits in filename self.saveUtil = SaveUtil(dt,self.fname) # Saving Utility Class try: os.mkdir( ddir ) except Exception: pass