object of type <class 'numpy.float64'> cannot be safely interpreted as an integer.

[heavengate]

New numpy version 1.18.0 linspace usage incompatible，see cocodataset/cocoapi#354 pycocotools cocoeval error as follows

Traceback (most recent call last):
  File "/home/anaconda/envs/py37/lib/python3.7/site-packages/numpy/core/function_base.py", line 117, in linspace
    num = operator.index(num)
TypeError: 'numpy.float64' object cannot be interpreted as an integer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "slim/prune/prune.py", line 393, in <module>
    main()
  File "slim/prune/prune.py", line 271, in main
    dataset=dataset)
  File "/paddle/slim16/slim17/dete_0210_py37/PaddleDetection/ppdet/utils/eval_utils.py", line 205, in eval_results
    is_bbox_normalized=is_bbox_normalized)
  File "/paddle/slim16/slim17/dete_0210_py37/PaddleDetection/ppdet/utils/coco_eval.py", line 94, in bbox_eval
    map_stats = cocoapi_eval(outfile, 'bbox', coco_gt=coco_gt)
  File "/paddle/slim16/slim17/dete_0210_py37/PaddleDetection/ppdet/utils/coco_eval.py", line 147, in cocoapi_eval
    coco_eval = COCOeval(coco_gt, coco_dt, style)
  File "/home/anaconda/envs/py37/lib/python3.7/site-packages/pycocotools/cocoeval.py", line 76, in __init__
    self.params = Params(iouType=iouType) # parameters
  File "/home/anaconda/envs/py37/lib/python3.7/site-packages/pycocotools/cocoeval.py", line 527, in __init__
    self.setDetParams()
  File "/home/anaconda/envs/py37/lib/python3.7/site-packages/pycocotools/cocoeval.py", line 507, in setDetParams
    self.iouThrs = np.linspace(.5, 0.95, np.round((0.95 - .5) / .05) + 1, endpoint=True)
  File "<__array_function__ internals>", line 6, in linspace
  File "/home/anaconda/envs/py37/lib/python3.7/site-packages/numpy/core/function_base.py", line 121, in linspace
    .format(type(num)))
TypeError: object of type <class 'numpy.float64'> cannot be safely interpreted as an integer.
terminate called without an active exception

Solution:

1. rollback numpy to 1.17.4

pip uninstall numpy
pip install numpy==1.17.4

2. reinstall pycocotools by compiling from latest source code

[zimoqingfeng]

建议numpy版本在readme中进行明确，否则会影响使用体验。