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CBSE Class 12 Informatics Practices Question 116 of 167

Python Pandas — I — Question 6

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6
Question

Question 6(a)

Find the error in following code fragment :

S2 = pd.Series([101, 102, 102, 104])   
print(S2.index)  
S2.index = [0, 1, 2, 3, 4, 5]  
S2[5] = 220  
print(S2)
Answer 
S2 = pd.Series([101, 102, 102, 104])  
print(S2.index)  
S2.index = [0, 1, 2, 3, 4, 5]  #Error 1
S2[5] = 220  
print(S2)

Error 1 — The Series S2 initially has four elements, so assigning a new index list of six elements ([0, 1, 2, 3, 4, 5]) to S2.index will raise a ValueError because the new index list length does not match the length of the Series.

The corrected code is:

S2 = pd.Series([101, 102, 102, 104])
print(S2.index)
S2.index = [0, 1, 2, 3]
S2[5] = 220
print(S2)