The Concept of File Modes
When processing a file, you will typically specify the type of operation you want to perform. The operation is specified using what is referred to as a file mode.The filemode describes how a file is to be used—to read from it, to write to it, to append it, and so on.
stream_object.open ("filename", (filemode) );The following table lists the filemodes available and their meaning:
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