Consider a data frame in python with all tyes of data $($from dates to strings and integers$).$

a$)$ Remove all characters that are numeric characters in a data frame. Also consider numeric values that are stored as string or date and remove them. Do it without the apply or map function.

b$)$ Solve a$)$ including using the existing placeholder, or selecting something of your own. Perform any such replacement of placeholders in the cell, if necessary. Justify the placeholder you are using for this data,