make clean version of part 1

Author: Joth

2019/Day 5/Part 1/AOC_2019_D5_P1_clean.py

@@ -0,0 +1,70 @@
+# Advent Of Code 2019, Day 5, Part 1
+# Author: Joth (https://github.com/joth00)
+
+from os import path
+
+
+def main():
+ text_input = get_raw_input()
+ int_code = IntCode(text_input)
+
+ int_code.execute()
+
+
+class IntCode:
+ PARAMETER_COUNTS = {1: 3, 2: 3, 3: 1, 4: 1, 99: 0}
+
+ def __init__(self, raw_int_code):
+ self._int_code = list(int(x) for x in raw_int_code.split(','))
+
+ def execute(self):
+ i = 0
+ while i < len(self._int_code):
+ opcode, parameter_modes = self._get_instruction(i)
+
+ if opcode not in IntCode.PARAMETER_COUNTS.keys():
+ i += 1
+ continue
+
+ parameter_count = IntCode.PARAMETER_COUNTS[opcode]
+
+ parameter_modes = parameter_modes + [0]*(parameter_count - len(parameter_modes))
+ parameters = self._get_parameters(i + 1, parameter_count)
+
+ for j in range(len(parameters)):
+ if parameter_modes[j] == 1:
+ # immediate mode, replace value by value index (location)
+ parameters[j] = i + j + 1
+
+ if opcode == 1:
+ self._int_code[parameters[2]] = self._int_code[parameters[0]] + self._int_code[parameters[1]]
+ elif opcode == 2:
+ self._int_code[parameters[2]] = self._int_code[parameters[0]] * self._int_code[parameters[1]]
+ elif opcode == 3:
+ self._int_code[parameters[0]] = int(input('INPUT: '))
+ elif opcode == 4:
+ print('OUTPUT:', self._int_code[parameters[0]])
+ elif opcode == 99:
+ break
+ 
+ i += parameter_count + 1
+ 
+ def _get_instruction(self, opcode_location):
+ full_opcode = self._int_code[opcode_location]
+ opcode = full_opcode % 100
+ parameter_modes = [int(x) for x in str(full_opcode)[:-2][::-1]]
+ return (opcode, parameter_modes)
+ 
+ def _get_parameters(self, location, parameter_count):
+ return self._int_code[location:location + parameter_count]
+
+
+def get_raw_input():
+ return open(retrieve_input_file_path(), 'r').read()
+
+
+def retrieve_input_file_path():
+ return path.join(path.dirname(__file__), 'input.txt')
+
+
+main()