dataFrame_test.py 文件源码

def misc():
    vals1 = np.array([1, np.nan, 3, 4])
    print vals1.sum()

    for dtype in ['object', 'int']:
        print("dtype =", dtype)
        # print timeit.timeit(np.arange(1E6, dtype=dtype).sum())
        start = time.time()
        print np.arange(1E8, dtype=dtype).sum()

        print time.time()-start