The list ofmon file formats used by the data scientists are CSV (Comma-separated values) ordered-list Code to read CSV files in Python import pandas (filename) 2. Excel Code to read CSV files in Python import pandas (filename sheetname) 3. JSON file Code to read CSV files in Python import pandas (filename) 4. Text files file = open( r) lines = () These are the mostmon file formats used by the data scientist. I usually encounter and CSV files. There are other file formats such as ZIP HTML DOCX PDF.