added day 1 code and updated organiser

day_1/part 2 solution.py

@@ -0,0 +1,70 @@
+import re
+
+with open('advent_of_code_2023\day_1\input.txt', 'r') as file:
+    input = file.read()
+
+def text_to_num(line: str) -> str:
+    '''Returns the line with the text numbers replaced with digits
+    input: line - string of characters 
+    output: a string
+    
+    example:
+    input: 'eightwothree'
+    output: '8wo3'
+    '''
+    text_to_num = {
+    "zero": "0",
+    "one": "one1one",
+    "two": "two2two",
+    "three": "three3three",
+    "four": "four4four",
+    "five": "five5five",
+    "six": "six6six",
+    "seven": "seven7seven",
+    "eight": "eight8eight",
+    "nine": "nine9nine"
+    }
+    #replace a text number with a digit surrounded by the same text numberm to resolve overlaps
+    for key, value in text_to_num.items():
+        if key in line:
+            line = line.replace(key, value)
+    return line
+
+def grab_first_and_last_digit(line: str) -> (int):
+    '''Returns the first and last digit of the given line
+    input: line - string of characters 
+    output: a 2 digit integer
+    
+    example:
+    input: 'pqr3stu8vwx'
+    output: 38
+    '''
+    first_digit = re.findall(r'\d', line)[0]
+    last_digit = re.findall(r'\d', line)[-1]
+    return int(first_digit + last_digit)
+
+def day_1_solution(input:str) -> int:
+    '''Returns the sum of the first and last digit of each line
+    input: input - string of characters
+    output: an integer
+    
+    example:
+    input: '1abc2\npqr3stu8vwx\na1b2c3d4e5f\ntreb7uchet'
+    output: 48
+    '''
+    list = []
+    for line in input.split('\n'):
+        line = text_to_num(line)
+        list.append(grab_first_and_last_digit(line))
+
+    return sum(list)
+
+
+test_input = 'two1nine\neightwothree\nabcone2threexyz\nxtwone3four\n4nineeightseven2\nzoneight234\n7pqrstsixteen'
+day_1_test = day_1_solution(test_input)
+print(day_1_test)
+assert day_1_test == 281
+
+day_1_answer = day_1_solution(input)
+print(day_1_answer)
+