Aktualizovat u8/program.py

u8/program.py

@@ -1,3 +1,4 @@
+import sys
 
 class Node:
     def __init__(self, text):
@@ -5,8 +6,9 @@ class Node:
         self.yes = None
         self.no = None
 
-
 def create_tree(lines, index, counts):
+    if index[0] >= len(lines):
+        raise ValueError
     node = Node(lines[index[0]])
     index[0] += 1
 
@@ -22,35 +24,29 @@ def create_tree(lines, index, counts):
 
 def main():
     print("Expert zo zoo to vie.")
-
     lines = []
 
     while True:
-        try:
+        line = sys.stdin.readline()
-            line = input()
+        if line == "":
-        except EOFError:
             print("Chybna databaza")
             return
-
+        line = line.rstrip("\r\n")
         if line == "":
             break
-
         lines.append(line)
-
     if len(lines) == 0:
         print("Chybna databaza")
         return
-
     counts = [0, 0]
     index = [0]
 
     try:
         root = create_tree(lines, index, counts)
-    except (IndexError, RecursionError):
-        print("Chybna databaza")
-        return
-
         if index[0] != len(lines):
+            raise ValueError
+
+    except (ValueError, RecursionError):
         print("Chybna databaza")
         return
 
@@ -62,16 +58,15 @@ def main():
 
     while True:
         print(current.text)
-
         if not current.text.endswith("?"):
             break
 
-        try:
+        answer = sys.stdin.readline()
-            answer = input()
+        if answer == "":
-        except EOFError:
             print("Koniec vstupu")
             return
 
+        answer = answer.rstrip("\r\n")
         if answer == "a":
             current = current.yes
         elif answer == "n":