48 lines
972 B
Python
48 lines
972 B
Python
import os
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import re
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import sys
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def is_number(x):
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try:
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_ = float(x)
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except ValueError:
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return False
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return True
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def remove_numbers(seq):
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return [ x for x in seq if not is_number(x)]
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def remove_duplicates(seq):
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seen = set()
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seen_add = seen.add
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return [ x for x in seq if x not in seen and not seen_add(x)]
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def get_operands(s):
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operands = re.findall("[A-z0-9_]+", s)
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operands = remove_duplicates(operands)
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operands = remove_numbers(operands)
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return sorted(operands)
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def gen_truth_table(s):
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operands = get_operands(s)
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width = len(operands)
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stim = []
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for i in range(width):
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stim_op = []
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for j in range(2**width):
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stim_op.append((int(j/(2**i)))%2)
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stim.append(stim_op)
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truth_table = []
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for i in range(2**width):
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for j in range(width):
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exec("%s = stim[j][i]" %operands[j])
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truth_table.append(eval(s) != 0)
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return truth_table
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def main():
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print(gen_truth_table("(A&B&C)|D"))
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if __name__ == '__main__':
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main()
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