provide the call to use free pyexcel resources: such open file handles

Author: chfw

pyexcel_webio/__init__.py

@@ -212,6 +212,13 @@ def save_book_to_database(self, session=None, tables=None,
         params['dest_auto_commit'] = auto_commit
         pe.save_book_as(**params)
 
+    def free_resources(self):
+        """
+        After you have used iget_array and iget_records, it's
+        recommended to call this function
+        """
+        pe.free_resources()
+
 
 class ExcelInputInMultiDict(ExcelInput):
     """

tests/test_webio.py

@@ -101,6 +101,7 @@ def test_iget_array(self):
         myinput = TestInput()
         array = myinput.iget_array(file_name=self.testfile)
         assert list(array) == self.data
+        myinput.free_resources()
 
     def test_get_dict(self):
         myinput = TestInput()
@@ -126,6 +127,7 @@ def test_iget_records(self):
             {"X": 1, "Y": 2, "Z": 3},
             {"X": 4, "Y": 5, "Z": 6}
         ]
+        myinput.free_resources()
 
     def test_save_to_database(self):
         Base.metadata.drop_all(engine)