Client Number	Address	Zipcode
123	ABC	11111
124	ABD	11112
125	ABE	11114
126	ABF	11115

I have been able to export the file to python and convert it to dataframe. DataFrama being "df". How can I write an argument, where if a Zipcode is outside of a list based on column in csv file. If Zipcode is not in [11111,11112,11113,11114] then it is a red flag.I don't need an input function. I just need an argument where the code reads the zipcode column exported from csv and tells me where the zipcode has red flag and is outside of [11111,11112,11113,11114].

Thank you!