Informatics Practices
Name the function to iterate over a DataFrame horizontally.
Python Pandas
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Answer
The iterrows() function iterates over a DataFrame horizontally.
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Assertion. In a dataset, there can be missing values that cannot contribute to any computation.
Reason. In a dataset, NULL, NaN or None are considered the missing values.
- Both A and R are true and R is the correct explanation of A.
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Assertion (A). The output of addition of two series will be NaN, if one of the elements or both the elements have no value(s).
Reason (R). While performing mathematical operations on a series, by default all missing values are filled in with 0.
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Name the function to iterate over a DataFrame vertically.
Write equivalent expressions for the given functions :
(i) A.add(B)
(ii) B.add(A)
(iii) A.sub(B)
(iv) B.sub(A)
(v) A.rsub(B)
(vi) B.mul(A)
(vii) A.rdiv(B)
(viii) B.div(A)
(ix) B.rdiv(A)
(x) A.div(B)