How to Specify Data Types During CSV Import in Pandas
When importing CSV files into Pandas DataFrames, it’s vital to specify data types to ensure data integrity and optimize performance. Pandas’ read_csv() function offers the dtype parameter to achieve this. Specifying data types is important because Pandas attempts to infer data types, but can sometimes make incorrect assumptions. For example, a column with numerical IDs might be interpreted as integers or strings, leading to unexpected behavior. Specifying data types guarantees your data is interpreted correctly. Furthermore, specifying data types can significantly improve memory usage and processing speed, especially with large datasets. Finally, it ensures data consistency across different analyses and operations. (more…)