#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Tue Feb 25 14:23:02 EST 2020
#import sys, os.path, os, datetime
#import xarray as xr, numpy as np, pandas as pd
#import matplotlib.pyplot as plt
#print()
 
#if __name__ == '__main__':
#    tformat = '%Y-%m-%d %H:%M:%S'
#    t0 = datetime.datetime.now()
#    print('[start]:', t0.strftime(tformat))
#    
#    t1 = datetime.datetime.now()
#    print('[total time used]:', f'{(t1-t0).seconds:,} seconds')
#    print('[end]:', t1.strftime(tformat))
#    print()