Demonstrates memory leak when writing attributes using h5py & HDF

hdf_leak.py

if __name__ == '__main__':
    import time
    import h5py
    import os
    
    rng = range(1000)
    reps = range(3)
    op = 'test.h5py'
    
    if os.path.exists(op): os.remove(op)
    
    time.sleep(10)
    
        with h5py.File(op, 'a') as f:
            f.attrs['a'] = 'atongowethoing'
            f.attrs['b'] = 'towinetpiahgnpaiunrg'
            f.attrs['c'] = 'apointhapgpauerpvuahps9er;soieuhrpauinprbnap9erhfpaoish;iuoaeiruvaperh;aosehr;aoishpunaerpvhaerp98gha;roihta;sobefpa9nvwep9aher;oihta;s9ehra;s98ehrshge98haw9uegubav9rwehg89whg9whg949887t10378rohwoirua98yvyh02h3t89hagw98ryaoisehgoaivpaorjgpao4ut0923y2ut4'
        
    
    time.sleep(20)
    
    for r in reps:
        for x in rng:
            atts = {}
            with h5py.File(op, 'a') as f:
                for key, val in f.attrs.iteritems():
                    atts[key] = val
            
            with h5py.File(op, 'a') as f:
                for a, v in atts.iteritems():
                    f.attrs[a] = v
                    
            time.sleep(0.1)
        time.sleep(20)