Validate only submitted Project Euler solution (#3977)

* Update validate solution script to fetch only submitted solution
* Update workflow file with the updated PE script
* Fix: do not fetch `validate_solutions.py` script
* Update script to use the requests package for API calls
* Fix: install requests module
* Pytest ignore scripts/ directory

.github/workflows/build.yml

@@ -22,6 +22,6 @@ jobs:
           python -m pip install --upgrade pip setuptools six wheel
           python -m pip install pytest-cov -r requirements.txt
       - name: Run tests
-        run: pytest --doctest-modules --ignore=project_euler/ --cov-report=term-missing:skip-covered --cov=. .
+        run: pytest --doctest-modules --ignore=project_euler/ --ignore=scripts/ --cov-report=term-missing:skip-covered --cov=. .
       - if: ${{ success() }}
         run: scripts/build_directory_md.py 2>&1 | tee DIRECTORY.md

.github/workflows/project_euler.yml

@@ -1,12 +1,14 @@
 on:
   pull_request:
-    # only check if a file is changed within the project_euler directory and related files
+    # Run only if a file is changed within the project_euler directory and related files
     paths:
-      - 'project_euler/**'
-      - '.github/workflows/project_euler.yml'
-      - 'scripts/validate_solutions.py'
+      - "project_euler/**"
+      - ".github/workflows/project_euler.yml"
+      - "scripts/validate_solutions.py"
+  schedule:
+    - cron: "0 0 * * *" # Run everyday
 
-name: 'Project Euler'
+name: "Project Euler"
 
 jobs:
   project-euler:
@@ -24,8 +26,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
-      - name: Install pytest
+      - name: Install pytest and requests
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade pytest
+          python -m pip install --upgrade pytest requests
       - run: pytest scripts/validate_solutions.py
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}