Introduction to handling text files with Python Programming Language
Data stored in variables and Python built-in data structures such lists, tuples, sets and dictionaries is lost when the program terminates. To permanently store the data created in a program, you must save the data in a file on a disk. This file can be transported on a disk and can be read later by other programs. An incredible amount of data is available in the form of text files. This makes handling text files an important part of computer programming. The Python programming language comes with built-in functions and methods for creating, opening, closing,reading, writing, updating and deleting text files.
In the first part of this seventh lecture of a 10-part seminar lecture series titled “Python programming for Scientists” , I will show how to use Python to create, open and close a text file. I will also show how to write, read and update a text file. Furthermore, I will show how to use a context manager to read, write and update text files. Last but not least, I will also show how to save data to a popular text file format called comma separated value (csv) as well as data structures to javascript object notation (json) format using the json module.
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