public/subjects/devops/write_file/README.md

Write file

Instructions

Create a file write_file.py which will have a function to_do(input) with one input as an argument list[tuple[dt.date, str]] which will be a to-do list like the following example:

[
    (dt.date(2022, 6, 1), "fix the seat"),
    (dt.date(2022, 6, 2), "take the trash"),
]

Your function needs to format and write the input in a text file output.txt as follows:

$ cat output.txt
Wednesday 01 June 2022: fix the seat
Thursday 02 June 2022: take the trash
$

Make sure you follow the correct format for the output. The given lists will always have the correct format and will never be empty.

Usage

Here is a possible test.py to test your function:

import datetime as dt
from write_file import to_do

to_do_list = [
    (dt.date(2022, 6, 1), "fix the seat"),
    (dt.date(2022, 6, 2), "take the trash"),
]
to_do(to_do_list)

$ python test.py
$ cat output.txt
Wednesday 01 June 2022: fix the seat
Thursday 02 June 2022: take the trash
$

Hints

• The strftime() method is used to format the date object as a string. You can use this method to format the date in the desired format (e.g. %A %d %B %Y).

import datetime as dt

date = dt.date(2022, 6, 1)
formatted_date = date.strftime("%A %d %B %Y")
print(formatted_date)

The output:

Wednesday 01 June 2022

• The %A and %B format codes are used to represent the full weekday and month name respectively. The %d format code is used to represent the day of the month. The %Y format code is used to represent the year.

• The write() method is used to write a string to a file. You can use this method to write the formatted date and task to the output file.

with open("output.txt", "w") as file:
    file.write("Hello World!")

In this example, the open() function is used to open the file named output.txt with the write mode w. The with statement is used to open the file, and automatically close it after the indented block of code is executed.

The write() method is used to write the string "Hello World!" to the file.

• Make sure to include a newline character \n at the end of each line of output, to separate the tasks in the output file.

• Test your function with different input formats, different date and task length, different date range and make sure that it works as expected.

References

• open a file
• write in a file