Update sqlite3/Files/README.md

sqlite3/Files/README.md

@@ -38,17 +38,19 @@ class Files:
         return self("SELECT COUNT(*) FROM files").iloc[0, 0]
 
 
-files = Files()
-for filename in files:
-    print(files[filename])
-files['hello'] = 'world'
-print(files['hello'])
-print(len(files))
-print('hello' in files)
-for filename in files:
-    print(filename)
+if __name__ == "__main__":
+    files = Files()
+    for filename in files:
+        print(files[filename])
+    files['hello'] = 'world'
+    print(files['hello'])
+    print(len(files))
+    print('hello' in files)
+    for filename in files:
+        print(filename)
+
+    del files['hello']
+    for filename in files:
+        print(filename)
 
-del files['hello']
-for filename in files:
-    print(filename)
 ```