# car_sales is my data, and price is its feature name
# anything that must be replaced is placed in square breackets in repalce
# where square brackets allow us to replace multiple characters
# it will replace thoses characters with empty string
# finally using dtypes, i am changing feature datatype to float
# in my case it is float, u may choose anything u want for example int
car_sales["Price"] = car_sales["Price"].str.replace("[$,]","").astype(float)