How to filter string from column from csv file

Python Help
1

Hi ,

I have a csv file and I need to check all columns to find ? in the csv file and remove those rows.

below is an example
Column1 Column 2 Column 3
1 ? 3
2 ?.. 1
? 2 ?.
? 4 4

I tried the below however it does not work

data = readData(“text.csv”)
print(data)

def Filter(string, substr):
return [str for str in string if
any(sub not in str for sub in substr)]

Driver code

string = data
substr = [’?’,’?.’,’? ‘,’? ']
filter_data=Filter(string, substr)