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Let's say I have a numpy array a = numpy.array([1,2,3,4]). Now str(a) will give me "[1 2 3 4]". How do I convert the string "[1 2 3 4]" back to a numpy.array([1,2,3,4])?

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  • I would ask why you want to do that instead of just keeping the array, but you can "split" on the spaces. arr = numpy.array(s.split(' ')) Commented Nov 22, 2019 at 11:25
  • @ChristianSloper I am writing these numpy arrays to csv files (gets written as shown in example) and i want to be able to read them back as numpy arrays Commented Nov 22, 2019 at 11:27
  • Use savetext() from numpy to store them properly Commented Nov 22, 2019 at 11:29

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Try numpy.array([int(v) for v in your_str[1:-1].split()])

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