Исправлена пятая задача первого дня, работа с байтами изменена на работу с числами вместо строк.

1 files changed, 19 insertions, 14 deletions

diff --git a/day1/task5/task5.py b/day1/task5/task5.py
index 52eafc2..2869247 100644
--- a/day1/task5/task5.py
+++ b/day1/task5/task5.py
@@ -1,15 +1,20 @@
-with open('task5_data.txt') as f:
-    print(f.read())
-
-with open('task5_data.txt', 'rb+') as input_byte, open('task5_data_new.txt', 'wb') as out:
-    char = input_byte.read(1)
-    while char:
-        binary = list(bin(int(char.hex(), 16))[2:])
-        if binary[-2] == '1':
-            binary[-2] = '0'
-        elif binary[-2] == '0':
-            binary[-2] = '1'
-    
-        out.write(bytes([int(''.join(binary), 2)]))
-        char = input_byte.read(1)
+import os
+
+read_path = os.path.join(os.getcwd(), 'task5_data.txt')
+write_path = os.path.join(os.getcwd(), 'task5_data_new.txt')
+
+if not os.access(read_path, os.R_OK):
+    print('Файл "{}" не доступен для чтения'.format(read_path))
+elif not os.access(write_path, os.W_OK):
+    print('Файл "{}" не доступен для записи'.format(write_path))
 
+else:
+    with open(read_path) as f:
+        print(f.read())
+
+    with open('task5_data.txt', 'rb') as input_byte, open(write_path, 'wb') as out:
+        char = input_byte.read(1)
+        while char:
+            number = int(char.hex(), 16)
+            out.write(bytes([number ^ 2]))
+            char = input_byte.read(1)