A simple python script to compute the first & follow of variables in a context-free grammar

Create a .txt with your grammar in the same format as the sample input below with your productions spaced (ex. A B C). The script does not print anything but generates a file with the output.

python3 task_5_1.py --file your_grammar_file.txt

S : A B C D E
A : a | epsilon
B : b | epsilon
C : c
D : d | epsilon
E : e | epsilon

Variable : First : Follow

S : a b c : $
A : a epsilon : b c
B : b epsilon : c
C : c : d e $
D : d epsilon : e $
E : e epsilon :