Informatics Practices
Consider two objects x and y. x is a list whereas y is a Series. Both have values 20, 40, 90, 110.
What will be the output of the following two statements considering that the above objects have been created already ?
(a) print (x*2)
(b) print (y*2)
Justify your answer.
Answer
(a)
Output
[20, 40, 90, 110, 20, 40, 90, 110]
In the first statement, x represents a list. When a list is multiplied by 2 (x*2), it replicates each element of the list twice.
(b)
Output
0 40
1 80
2 180
3 220
dtype: int64
In the second statement, y represents a Series. When a Series is multiplied by a value, each element of the Series is multiplied by 2, as Series supports vectorized operations.
Related Questions
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(a) if the series is empty
(b) indexes of the series
(c) The data type of underlying data
(d) if the series stores any NaN values
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S1 A 10 B 40 C 34 D 60 S2 A 80 B 20 C 74 D 90 Write the command to find the sum of series S1 and S2.
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A B D 0 15 17 19 1 16 18 20 2 20 21 22 What will be the result of following code statements ?
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(b) List rows from 3 to 7.
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