Sandbox

sandbox/hash_list.py

@@ -0,0 +1,24 @@
+import hashlib
+import io
+from pathlib import Path
+
+
+def get_hash(filename):
+    with open(filename, "r", encoding="latin-1", buffering=0) as frh:
+        with open(filename + ".sha", "w", encoding="latin-1") as fwh:
+            chunk = io.StringIO()
+            for i, line in enumerate(frh.readlines()):
+                chunk.write(line)
+                if i % 1000 == 0:
+                    m = hashlib.sha256(chunk.getvalue().encode())
+                    chunk.truncate(0)
+                    fwh.write(m.hexdigest() + "\n")
+
+
+def main():
+    for f in Path("datev/data").glob("*.csv"):
+        get_hash(str(f))
+
+
+if __name__ == "__main__":
+    main()

sandbox/sudoku_solver.py

@@ -2,7 +2,7 @@ class Board:
     symbols = "123456789"
     blank = "."
 
-    _board = ['.' * 10 for i in range(9)]
+    _board = ["." * 10 for i in range(9)]
 
     def set_initial(self, board: list):
         self._board = board.copy()
@@ -16,16 +16,16 @@ class Board:
     def get_block(self, x, y):
         row = x // 3
         col = y // 3
-        return [r[col * 3:(col + 1) * 3] for r in self._board[row * 3:(row + 1) * 3]]
+        return [r[col * 3 : (col + 1) * 3] for r in self._board[row * 3 : (row + 1) * 3]]
 
     def is_blank(self, x, y):
         return self._board[x][y] == self.blank
-    
+
     def is_solved(self):
         return self.blank not in "".join(self._board)
 
     def set_cell(self, x, y, value):
-        self._board[x] = self._board[x][:y] + value + self._board[x][y + 1:]
+        self._board[x] = self._board[x][:y] + value + self._board[x][y + 1 :]
 
     def get_possibilities(self, x, y):
         all_symbols = list(self.get_row(x) + self.get_col(y) + "".join(self.get_block(x, y)))
@@ -40,12 +40,12 @@ class Board:
                 if self.is_blank(i, j) and len(self.get_possibilities(i, j)) == 1:
                     return (i, j)
         return None
-    
+
     def get_next_blank(self):
         for i in range(9):
             for j in range(9):
                 if self.is_blank(i, j):
-                    return (i, j)        
+                    return (i, j)
 
     def solve(self):
         while cell := self.get_unique_cell():