Use pathlib for input.txt path

day-01/day-01.py

@@ -1,4 +1,6 @@
 #!/usr/bin/python3
+from pathlib import Path
+
 
 def part_1(input):
     last_number = int(input[0])
@@ -34,8 +36,9 @@ def alt_solution(input, num_summands):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
 
 part_1(input)
 part_2(input)

day-02/day-02.py

@@ -1,4 +1,6 @@
 #!/usr/bin/python3
+from pathlib import Path
+
 
 def part_1(input):
     h_pos = 0
@@ -33,8 +35,8 @@ def part_2(input):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
-
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
     part_1(input)
     part_2(input)

day-03/day-03.py

@@ -1,4 +1,6 @@
 #!/usr/bin/python3
+from pathlib import Path
+
 
 def part_1(input):
     result = 0
@@ -59,8 +61,8 @@ def part_2(input):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
-
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
     part_1(input)
     part_2(input)

day-04/day-04.py

@@ -1,4 +1,6 @@
 #!/usr/bin/python3
+from pathlib import Path
+
 
 def read_boards(input):
     boards = list()
@@ -129,8 +131,8 @@ def part_2(input):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
-
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
     part_1(input.copy())
     part_2(input.copy())

day-05/day-05.py

@@ -1,5 +1,5 @@
-#!/usr/bin/phon3
-
+#!/usr/bin/phyton3
+from pathlib import Path
 from collections import defaultdict
 
 
@@ -44,8 +44,8 @@ def part_2(input):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
-
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
     part_1(input)
     part_2(input)

template.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python3
+from pathlib import Path
 
 def part_1(input):
     result = 0
@@ -15,8 +16,8 @@ def part_2(input):
 
 
 input = list()
-with open('input.txt') as fp:
-    input = fp.readlines()
-
+p = Path(__file__).with_name('input.txt')
+with open(p) as f:
+    input = f.readlines()
     part_1(input)
     part_2(input)