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python-3.xnumpyany

unexpected result with numpy any()

most probably I'm missing something on the any()function, it says: Returns True if any of the elements of a evaluate to True.

So in my case below, I would expect true as an output, as one element count[0] is larger than 2. However, the output is FALSE.

What stupid mistake am I doing?!

minimal example:

count = np.zeros(10)
count[0] += 4
count[5] += 1
print(np.any(count,axis=0) > 2)
Solution 
  • # parentheses:

np.any(count,axis=0)
#output: True

np.any(count, axis=0)>2
# is a boolean expression. It evaluates to False, because True is not larger than 2.

# So:
np.any(count>2, axis=0)

# should do what you want