├── hello
    ├── .cs50.yml
    └── __init__.py
└── hello_simple
    └── .cs50.yml


/hello/.cs50.yml:
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1 | check50: true
2 | submit50: true
3 | 


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/hello/__init__.py:
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 1 | import check50
 2 | import check50.c
 3 | 
 4 | @check50.check()
 5 | def compiles():
 6 |     """hello compiles"""
 7 |     check50.run("clang hello.c -o hello").exit(0)
 8 | 
 9 | @check50.check(compiles)
10 | def prints_hello():
11 |     """prints exactly hello world"""
12 |     check50.run("./hello").stdout("hello world").exit(0)
13 | 


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/hello_simple/.cs50.yml:
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 1 | check50:
 2 |   checks:
 3 |       prints hello: 
 4 |         - run: clang hello.c -o hello
 5 |           exit: 0
 6 |         - run: ./hello
 7 |           stdout: hello world
 8 |           exit: 0
 9 | submit50: true
10 | 


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