Chapter 2. Reading and Writing Files

In this chapter, we will cover:

• Reading a simple file

• Reading several files at the same time

• Reading unstructured files

• Reading files having one field by row

• Reading files having some fields occupying two or more rows

• Writing a simple file

• Writing an unstructured file

• Providing the name of a file (for reading or writing) dynamically

• Using the name of a file (or part of it) as a field

• Reading an Excel file

• Getting the value of specific cells in an Excel file

• Writing an Excel file with several sheets

• Writing an Excel file with a dynamic number of sheets