Create a Python environment for professionals in VS Code on Windows

The following is assumed. I will also write the version at hand when creating the article.

• Windows10
• VS Code installed (1.40.1)
• Windows version of Python installed (3.8.0)
• The following is already installed on Windows after Python is installed ⇒ online-judge-tools

goal

You can run a test in the sample case with Ctrl + Shift + B, Create an environment where you can manually execute a test with Ctrl + Shift + T.

Folder structure

I did the following. As one file for each question, throw it all under src.

work
│  cptest.bat
│  input.txt
│
├─.vscode
│      launch.json
│      settings.json
│      tasks.json
│
├─src
│      abc114_a.py
│
└─test

cptest.bat

cptest.bat

@echo off

set problemname=%1
set testdir=test\%problemname%
set baseurl=%problemname:~0,-2%
set baseurlreplaced=%baseurl:_=-%

rem # log in
oj login -u username -p password "https://atcoder.jp/"
oj login --check "https://atcoder.jp/"

rem # make test directory
if not exist %testdir% (
  oj dl -d test/%problemname%/ https://atcoder.jp/contests/%baseurlreplaced%/tasks/%problemname%
)

oj test -c "python src/%problemname%.py" -d test/%problemname%/

Description

It is a batch file that runs by giving one argument like cptest.bat abc114_a. In addition, conversion processing is forcibly inserted so that it works even with cptest.bat ddcc2020_qual_a. Change ʻusername and password in the line of ʻoj login -u appropriately before using. On the last line, assuming that the python command is in the path, it will slam and spit out the result to standard output.

input.txt

input.txt

(Write what you want to pass as standard input)

Description

It is a text file used like python xxxxx.py <input.txt. Write the input you want to test on your own.

launch.json

launch.json

{
  //You can use IntelliSense to learn the available attributes.
  //Hover and display the description of existing attributes.
  //Check the following for more information: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Python: Current File",
      "type": "python",
      "request": "launch",
      "program": "${file}",
      "console": "integratedTerminal",
      "args": [
        "<",
        "input.txt"
      ]
    }
  ]
}

Description

This is a configuration file for running the debugger with F5. The following is how to make: You can open debug by opening the .py file and then suddenly pressing F5. You can prepare the launch.json template by pressing" Add Configuration "on the screen below. If you write around ʻargs` on the prepared template, it is completed.

tasks.json

tasks.json

{
  // See https://go.microsoft.com/fwlink/?LinkId=733558
  // for the documentation about the tasks.json format
  "version": "2.0.0",
  "tasks": [
    {
      "label": "test_atcorder_sample",
      "group": {
        "kind": "build",
        "isDefault": true
      },
      "type": "shell",
      "command": "${workspaceFolder}/cptest.bat",
      "args": [
        "${fileBasenameNoExtension}"
      ],
      "problemMatcher": []
    },
    {
      "label": "test_manual_input",
      "group": {
        "kind": "test",
        "isDefault": true
      },
      "type": "shell",
      "command": "python",
      "args": [
        "${file}",
        "<",
        "input.txt"
      ]
    }
  ]
}

Description

This is a configuration file for writing Ctrl + Shift + B (build task) and Ctrl + Shift + T (test task). The following is how to make: If you suddenly press Ctrl + Shift + B after opening the .py file, the following screen will appear and you can prepare a template for tasks.json. It is completed by editing the prepared template.

abc114_a.py

abc114_a.py

def main():
    x = int(input())
    ans = "NO"
    if (x == 7 or x == 5 or x == 3):
        ans = "YES"

    print(ans)

if __name__ == '__main__':
    main()

Description

Be careful with the file name so that it is [contest name] _ [problem name] .py. In the above case, write the code to solve the A problem of ABC114.

Operation

Create a .py file with an appropriate file name under src according to the contest. After making an answer, check the operation of the sample case with Ctrl + Shift + B, and submit it as it is if you like. If you notice a suspicious part, change ʻinput.txt as appropriate, check the operation with F5orCtrl + Shift + T`, correct it and submit it.

reference

Building a competitive professional environment with Visual Studio Code (Practice) --Qiita