BUG: read_excel fails when empty sheets exist and sheetname=None #11711

Author: sxwang

doc/source/whatsnew/v0.18.0.txt

@@ -230,3 +230,5 @@ Bug Fixes
 
 
 - Bug in ``df.replace`` while replacing value in mixed dtype ``Dataframe`` (:issue:`11698`)
+
+- Bug in ``read_excel`` failing to read any non-empty sheets when empty sheets exist and ``sheetname=None`` (:issue:`11711`)

pandas/io/excel.py

@@ -391,7 +391,8 @@ def _parse_cell(cell_contents,cell_typ):
                 data.append(row)
 
             if sheet.nrows == 0:
-                return DataFrame()
+                output[asheetname] = DataFrame()
+                continue
 
             if com.is_list_like(header) and len(header) == 1:
                 header = header[0]

pandas/io/tests/test_excel.py

@@ -382,6 +382,15 @@ def test_reading_multiple_specific_sheets(self):
         tm.assert_contains_all(expected_keys, dfs.keys())
         assert len(expected_keys) == len(dfs.keys())
 
+    def test_reading_all_sheets_with_blank(self):
+        # Test reading all sheetnames by setting sheetname to None,
+        # In the case where some sheets are blank.
+        # Issue #11711
+        basename = 'blank_with_header'
+        dfs = self.get_exceldf(basename, sheetname=None)
+        expected_keys = ['Sheet1', 'Sheet2', 'Sheet3']
+        tm.assert_contains_all(expected_keys, dfs.keys())        
+
     # GH6403
     def test_read_excel_blank(self):
         actual = self.get_exceldf('blank', 'Sheet1')