Python Quiz: What is the Output?

@PythonPr Output is 4 a[-0] is the same as a[0] so don't confuse here.

@PythonPr 4. a[-0] is the same as a[0], so 1. a[-1] is 3. So, 1 + 3 is 4.

@PythonPr 1. a[-0] is the same as a[0] 2. a[-1] points to the last item in the list. a[-2] is the second last item and a[-3] is the first item (a reverse sequence) 3. print(a + b) = 1 + 3 = 4

@PythonPr Eazy 4 because a[-0] = a[0] and a[-1]= a[2]

@PythonPr 4

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@PythonPr 4

@PythonPr Output : 4 ... .@PythonPr

@PythonPr a = [1,2,3] b = a[-0] # Egyptian zero {-} ignored a[0]=1 c = a[-1] # start at the end of the list a[-1]=3 print(b + c) #print 4 {1+3} # -4 and 3 throw subscript range errors valid values -3<=n<=2 a[ -3 ] = 1 a[ -2 ] = 2 a[ -1 ] = 3 a[ 0 ] = 1 a[ 1 ] = 2 a[ 2 ] = 3