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Write a program that randomly mutates some given text which may be given on the command line:
$ ./telephone.py 'The quick brown fox jumps over the lazy dog.'
You said: "The quick brown fox jumps over the lazy dog."
I heard : "The qu)ck brown HoN jumps over thf lazy dog."
Or from a file:
$ ./telephone.py ../inputs/fox.txt
You said: "The quick brown fox jumps over the lazy dog."
I heard : "=he quick brswn fox jumps over the*[azy dog."
The program should accept a -m or --mutations that is a floating point number between 0 and 1 that represents a percentage of mutations to introduce:
$ ./telephone.py -m .5 ../inputs/fox.txt
You said: "The quick brown fox jumps over the lazy dog."
I heard : "w\eeqhR$kBbxown|foGLFuvn| ooe: t'. l"zy d&:."
It should also accept a -s or --seed argument for the random seed to ensure reproducible results:
$ ./telephone.py -s 2 ../inputs/fox.txt
You said: "The quick brown fox jumps over the lazy dog."
I heard : "TheNqHick Crown fox jum_s over the lazy dog."
If provided no arguments, it should print a brief usage:
$ ./telephone.py
usage: telephone.py [-h] [-s int] [-m float] str
telephone.py: error: the following arguments are required: str
$ ./telephone.py -h
usage: telephone.py [-h] [-s int] [-m float] str
Telephone
positional arguments:
str Input text or file
optional arguments:
-h, --help show this help message and exit
-s int, --seed int Random seed (default: None)
-m float, --mutations float
Percent mutations (default: 0.1)
Run the test suite to ensure your program is correct:
$ make test
pytest -xv test.py
============================= test session starts ==============================
...
collected 10 items
test.py::test_exists PASSED [ 10%]
test.py::test_usage PASSED [ 20%]
test.py::test_bad_seed_str PASSED [ 30%]
test.py::test_bad_mutation_str PASSED [ 40%]
test.py::test_bad_mutation PASSED [ 50%]
test.py::test_for_echo PASSED [ 60%]
test.py::test_now_cmd_s1 PASSED [ 70%]
test.py::test_now_cmd_s2_m4 PASSED [ 80%]
test.py::test_fox_file_s1 PASSED [ 90%]
test.py::test_fox_file_s2_m6 PASSED [100%]
============================== 10 passed in 0.82s ==============================