PandasdrillConvert text to numbers
A pandas exercise from Pandasdrill. Solve it with a Python editor in your browser running real pandas, and it is checked the moment you submit.
The task
The `price` column was read in as text. Convert it to float, add a `total` column equal to `qty * price`, and return the whole `items` table.
What this exercise teaches
Text that looks like numbers still has the object dtype, so arithmetic on it either fails or repeats strings. astype(float) or pd.to_numeric turns it into real numbers before you compute the total.
A hint if you get stuck
astype(float) converts a column of numeric strings. Multiplying a number by a string in Python repeats the string, which is not what you want.
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