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| f = open(filename, mode) | open filename in mode |
| close, f | close file f (automatic if f redefined) |
The mode is a string which announces the type of operations you intend to perform: "r" (the default if mode is omitted) means read operations only, "w" means write only, and destroy any existing file filename, "r+" means read/write, leaving any existing file filename intact. Other mode values are also meaningful; see help.
The file variable f is a distinct data type in Yorick; text files have a different data type than binary files. The print or info function will describe the file. The close function is called implicitly when the last reference to a file disappears.