Update app.py

app.py

@@ -12,11 +12,15 @@ def main():
         complement_operation()
 
 def parse_set(input_str):
-    try:
-        return set(map(int, input_str.split(',')))
-    except ValueError:
-        st.error("入力が正しくありません。カンマ区切りの整数を入力してください。")
-        return set()
+    if input_str:
+        try:
+            return set(map(int, input_str.split(',')))
+        except ValueError:
+            st.error("入力が正しくありません。カンマ区切りの整数を入力してください。")
+            return None
+    else:
+        st.error("入力が空です。カンマ区切りの整数を入力してください。")
+        return None
 
 def set_operations():
     st.header("集合の操作")
@@ -36,24 +40,28 @@ def set_operations():
         set2 = parse_set(set2)
         set3 = parse_set(set3)
 
-        # 集合の操作
-        st.subheader("集合の操作結果")
+        if set1 is not None and set2 is not None and set3 is not None:
+            # 集合の操作
+            st.subheader("集合の操作結果")
 
-        st.subheader("和集合")
-        union = set1.union(set2, set3)
-        st.write(union)
+            st.subheader("和集合")
+            union = set1.union(set2, set3)
+            st.write(union)
 
-        st.subheader("積集合")
-        intersection = set1.intersection(set2, set3)
-        st.write(intersection)
+            st.subheader("積集合")
+            intersection = set1.intersection(set2, set3)
+            if intersection:
+                st.write(intersection)
+            else:
+                st.write("積集合の結果は空です。")
 
-        st.subheader("差集合")
-        difference = set1.difference(set2, set3)
-        st.write(difference)
+            st.subheader("差集合")
+            difference = set1.difference(set2, set3)
+            st.write(difference)
 
-        st.subheader("対称差")
-        symmetric_difference = set1.symmetric_difference(set2)
-        st.write(symmetric_difference)
+            st.subheader("対称差")
+            symmetric_difference = set1.symmetric_difference(set2)
+            st.write(symmetric_difference)
 
 def complement_operation():
     st.header("補集合の計算")
@@ -74,13 +82,14 @@ def complement_operation():
         # 入力された文字列を集合に変換
         universe_set = parse_set(universe)
 
-        # 補集合の計算
-        st.subheader("補集合の計算結果")
-        for i in range(num_steps):
-            current_range = range(initial_value, initial_value + step)
-            complement = universe_set.difference(current_range)
-            st.write(f"補集合({initial_value} - {initial_value + step - 1})", complement)
-            initial_value += step
+        if universe_set is not None:
+            # 補集合の計算
+            st.subheader("補集合の計算結果")
+            for i in range(num_steps):
+                current_range = range(initial_value, initial_value + step)
+                complement = universe_set.difference(current_range)
+                st.write(f"補集合({initial_value} - {initial_value + step - 1})", complement)
+                initial_value += step
 
 if __name__ == "__main__":
     main()