How to delete an object from a numpy array without knowing the index

Cast it as a numpy array, and mask it out:

x = np.array(list("abcdef"))

x = x[x!='e']  # <-- THIS IS THE METHOD

print x
# array(['a', 'b', 'c', 'd', 'f'])

Doesn't have to be more complicated than this.

You can find the index/indices of the object using np.argwhere, and then delete the object(s) using np.delete.

Example:

x = np.array([1,2,3,4,5])
index = np.argwhere(x==3)
y = np.delete(x, index)
print(x, y)

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