Top Questions

1. how to only import module if necessary and only once
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2. How does Pythons double-sided inequality work? and why doesn't it work for numpy arrays?
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3. Python: adding descriptor with setattr doesn't call __set_name__
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4. setting all elements of a numpy array to zero vs. creating a new array of zeros
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5. Why not to use Ωβλδεαθφψωϕϖ (non-ASCII chars) in Python code?
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