Python Multiple Choice Questions And Answers

[j for i in range(2,8) for j in range(i*2, 50, i)]

The list comprehension shown above returns a list of non-prime numbers up to 50. The logic behind this is that the square root of 50 is almost equal to 7. Hence all the multiples of 2-7 are not prime in this range.

The built-in function pow() can accept two or three arguments. When it takes in two arguments, they are evaluated as x**y. When it takes in three arguments, they are evaluated as (x**y)%z.

min(max(False,-3,-4), 2,7)

The function max() is being used to find the maximum value from among -3, -4 and false. Since false amounts to the value zero, hence we are left with min(0, 2, 7) Hence the output is 0 (false).

my_tuple = (1, 2, 3, 4)
my_tuple.append( (5, 6, 7) )
print len(my_tuple)

Tuples are immutable and don’t have an append method. An exception is thrown in this case.

l=[2, 3, [4, 5]] l2=l.copy() l2[0]=88 l l2 The code shown above depicts deep copy. In deep copy, the base address of the objects is not copied. Hence the modification done on one list does not affect the other list.