Use numpy array processing

fun_ndarray DEF (): 
    A = [[1,2,7], 
         [-6, -2, -3], 
         [-4, -8, -55] 
         ] 
    B = np.array (A) 
    B = NP. abs (b) # absolute value of the array 
    Print ( 'B [:, 0]') 
    Print (B [:, 0]) taking a first row of data # 
    Print ( 'B [:] [0]') 
    Print taking a first data line #: ([0] B []) 
    B_X B = [:, 0] + B [:, 2] # of the first and third columns are added elements 
    print (b_x)
 results:

　　b [:, 0] # first row
　　[1. 6. 4]
　　B [:] [0] # of the first row
　　[127]
　　[8959]