0x0B-python-input_output

0x0B. Python - Input/Output

Resources:books:

Read or watch:

• 7.2. Reading and Writing Files
• 8.7. Predefined Clean-up Actions
• Dive Into Python 3: Chapter 11. Files
• JSON encoder and decoder
• Learn to Program 8 : Reading / Writing Files
• Automate the Boring Stuff with Python

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Learning Objectives:bulb:

What you should learn from this project:

• Why Python programming is awesome
• How to open a file
• How to write text in a file
• How to read the full content of a file
• How to read a file line by line
• How to move the cursor in a file
• How to make sure a file is closed after using it
• What is and how to use the with statement
• What is JSON
• What is serialization
• What is deserialization
• How to convert a Python data structure to a JSON string
• How to convert a JSON string to a Python data structure

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0. Read file

• Write a function that reads a text file (UTF8) and prints it to stdout:

1. Write to a file

• Write a function that writes a string to a text file (UTF8) and returns the number of characters written:

2. Append to a file

• Write a function that appends a string at the end of a text file (UTF8) and returns the number of characters added:

3. To JSON string

• Write a function that returns the JSON representation of an object (string):

4. From JSON string to Object

• Write a function that returns an object (Python data structure) represented by a JSON string:

5. Save Object to a file

• Write a function that writes an Object to a text file, using a JSON representation:

6. Create object from a JSON file

• Write a function that creates an Object from a “JSON file”:

7. Load, add, save

• Write a script that adds all arguments to a Python list, and then save them to a file:

8. Class to JSON

• Write a function that returns the dictionary description with simple data structure (list, dictionary, string, integer and boolean) for JSON serialization of an object:

9. Student to JSON

• Write a class Student that defines a student by:

10. Student to JSON with filter

• Write a class Student that defines a student by: (based on 9-student.py)

11. Student to disk and reload

• Write a class Student that defines a student by: (based on 10-student.py)

12. Pascal's Triangle

• Technical interview preparation:

13. Search and update

• Write a function that inserts a line of text to a file, after each line containing a specific string (see example):

14. Log parsing

• Write a script that reads stdin line by line and computes metrics:

15. Hack the VM

• Write a script that finds a string in the heap of a running process, and replaces it.

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Author

• Joseph Mahiuha - Mahiuha

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