I&C SCI 31 Lecture Notes - Lecture 7: File System
18 Aug 2016
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Document Summary
Some features allow let you solve new kinds of problems. eg. lists. Some let you do the same things more conveniently or efficiently for i in range(10): -- body of loop --- can be written as: i = 0 while i < 10: Today, files: really lets us do new things. They give us persistence (data sticks around. i. e after turning off machine data is still there). Files come in a lot of different formats: We"re going to deal with plain text files, . txt. Ascii is the standard correspondence between bits (binary digits) in memory and characters/keystrokes. Ascii table = what combination of bits correspond to which characters. Directory: a folder containing documents/files and other directories. File system: all the folders/directories on a disk drive or a computer. We are going to read for files in the same directory/folder as our. py file is. Three basic steps for file i/o (input/output): open the file.
