http://rosalind.info/problems/revc/
Write a program called "revc.py" that will accept a string of DNA either or a filename containing the DNA and will print the reverse complement. The program should print a "usage" statement for "-h" or "--help" flags:
$ ./revc.py -h
usage: revc.py [-h] DNA
Print the reverse complement of DNA
positional arguments:
DNA Input sequence or file
optional arguments:
-h, --help show this help message and exit
The program can accept the DNA as a command-line argument:
$ ./revc.py AAAACCCGGT
ACCGGGTTTT
Or as the name of an input file such as:
$ cat tests/inputs/input1.txt
AAAACCCGGT
$ ./revc.py tests/inputs/input1.txt
ACCGGGTTTT
A fully passing test suite looks like the following:
$ make test
python3 -m pytest -xv --flake8 --pylint --mypy revc.py tests/revc_test.py
============================ test session starts ============================
...
revc.py::FLAKE8 PASSED [ 8%]
revc.py::mypy PASSED [ 16%]
tests/revc_test.py::FLAKE8 PASSED [ 25%]
tests/revc_test.py::mypy PASSED [ 33%]
tests/revc_test.py::test_exists PASSED [ 41%]
tests/revc_test.py::test_usage PASSED [ 50%]
tests/revc_test.py::test_no_args PASSED [ 58%]
tests/revc_test.py::test_uppercase PASSED [ 66%]
tests/revc_test.py::test_lowercase PASSED [ 75%]
tests/revc_test.py::test_input1 PASSED [ 83%]
tests/revc_test.py::test_input2 PASSED [ 91%]
::mypy PASSED [100%]
=================================== mypy ====================================
Success: no issues found in 2 source files
============================ 12 passed in 1.55s =============================
Ken Youens-Clark [email protected]