Pycocotools incompatable with numpy 1.18

[glenn-jocher]

Google Colab with pycocotools preinstalled and numpy 1.18.4 preinstalled produces this error:

loading annotations into memory...
Done (t=0.38s)
creating index...
index created!
Loading and preparing results...
DONE (t=5.31s)
creating index...
index created!
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-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 "test.py", line 257, in <module>
    opt.augment)
  File "test.py", line 214, in test
    cocoEval = COCOeval(cocoGt, cocoDt, 'bbox')
  File "/usr/local/lib/python3.6/dist-packages/pycocotools/cocoeval.py", line 76, in __init__
    self.params = Params(iouType=iouType) # parameters
  File "/usr/local/lib/python3.6/dist-packages/pycocotools/cocoeval.py", line 527, in __init__
    self.setDetParams()
  File "/usr/local/lib/python3.6/dist-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 "/usr/local/lib/python3.6/dist-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.

See cocodataset/cocoapi#354

[metrizable]

@glenn-jocher Thanks for reporting the issue. We've upgraded both numpy and pycocotools versions that are pre-installed in the Colab runtime since then. If you are still experiencing an error, please open a new issue with a minimal reproducible notebook.