What expression > mean in sentence (python)?

Question

What is the type of output here?:

H2 = np.random.rand(*H1.shape) < p   ## p= 0.60    60%

That numpy expression creates a Boolean array with a share of `p` True values (and `1 - p` False). — user7138814, Jan 28 '17 at 20:38
This is probably a duplicate, but not of the ones linked. He is asking what the `<` operator means in this context, not the `*` operator — Natecat, Jan 28 '17 at 20:59

score 2 · Answer 1 · answered Jan 28 '17 at 21:14

In [489]: x = np.random.rand(2,3)
In [490]: x
Out[490]: 
array([[ 0.09070037,  0.27653004,  0.14790416],
       [ 0.38391008,  0.1477435 ,  0.63524601]])

to find elements that are less than .5:

In [491]: x<.5   
Out[491]: 
array([[ True,  True,  True],
       [ True,  True, False]], dtype=bool)

score 0 · Answer 2 · answered Jan 29 '17 at 05:39

Your question was "What is the type of output here". The output will be a boolean (True or False) since it's comparing the result of np.random.rand(*H1.shape) with p. If p is bigger than np.random.rand(*H1.shape) H2 will be True. Otherwise H2 will be False(if np.random.rand(*H1.shape) is equal or smaller than p).

What expression > mean in sentence (python)?

2 Answers2