Show the largest variables by memory use in python.

memuse.py

def sizeof_fmt(num, suffix='B'):
    ''' by Fred Cirera,  https://stackoverflow.com/a/1094933/1870254, modified'''
    for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
        if abs(num) < 1024.0:
            return "%3.1f %s%s" % (num, unit, suffix)
        num /= 1024.0
    return "%.1f %s%s" % (num, 'Yi', suffix)

def numpysizeof(o):
    if "nbytes" in dir(o):
        if type(o.nbytes) is int:
            return o.nbytes
    return sys.getsizeof(o)

for name, size in sorted(((name, numpysizeof(value)) for name, value in list(
                          locals().items())), key= lambda x: -x[1])[:10]:
    print("{:>30}: {:>8}".format(name, sizeof_fmt(size)))