vcaldas

import re

with open('input.txt', 'r') as f:
    lines = f.readlines()
  
def get_symbols(lines):
    symbols = []
    all_lines = " ".join(line.strip() for line in lines)  
    for c in all_lines:
        if (c not in symbols) and (not c.isdigit()):

vcaldas

/*-
 * #%L
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 * %%
 * Copyright (C) 2017 SciJava developers.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,