What does CSV reader return?

Does CSV reader return list?

reader() function. It returned an iterator, which can be used to iterate over all the lines of csv file. But we passed this iterator object to list() function, which return a list of lists i.e. where each list represents a row of csv and each item in the list represents a cell / column in that row.

When you read a CSV file using CSV Reader () it returns the values in?

Example 1: Read CSV files with csv. Then, the csv. reader() is used to read the file, which returns an iterable reader object. The reader object is then iterated using a for loop to print the contents of each row.

Does CSV reader read the whole file?

It is only a pointer it will not load the whole file in the memory. However, it actually depends on the way you are opening the file. .read() loads the complete file in the ram.

What function returns a CSV writer object for a file?

The csv. writer() function returns a writer object that converts the user's data into a delimited string. This string can later be used to write into CSV files using the writerow() function.