Informatics Practices
Assertion. While changing the values of a column in a dataframe, if the column does not exist, an error occurs.
Reason. If values are provided for a non-existing column in a dataframe, a new column is added with those values.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Python Pandas
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Answer
A is false but R is true.
Explanation
While changing the values of a column in a dataframe where the column does not exist does not cause an error. Instead, a new column with those values is added to the dataframe. If values are provided for a non-existing column in a dataframe, a new column is added with those values.
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