FIX: Use openpyxl instead of xlrd

CHANGELOG.md

@@ -55,6 +55,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed ###
 - An exception in collect_information does no longer lead to a break down.
+- Removed dependency on discontiued xlrd version
 * Fixed an issue where `caosadvancedtools.cache.UpdateCache` would
   cause an `sqlite3.IntegrityError` if more than one change was cached
   for the same entity.

integrationtests/extroot/DataAnalysis/2010_TestProject/2019-02-03/README.md

 ---
 responsible:	
 - Only Responsible
-description: 	A description of this example analysis.
+description: 	A description of another example analysis.
 
 sources:
 - file:	"/ExperimentalData/2010_TestProject/2019-02-03/*.dat"

integrationtests/extroot/ExperimentalData/2010_TestProject/2019-02-03/README.md

 ---
 responsible:	
 - Only Responsible
-description: 	A description of this example experiment.
+description: 	A description of another example experiment.
 
 results:
 - file:	"/ExperimentalData/2010_TestProject/2019-02-03/*.dat"

integrationtests/extroot/Publications/Posters/2019-02-03_really_cool_finding/README.md

 ---
 responsible:	
 - Only Responsible
-description: 	A description of this example experiment.
+description: 	A description of another example experiment.
 
 sources:
 - /DataAnalysis/2010_TestProject/2019-02-03/results.pdf

integrationtests/extroot/SimulationData/2010_TestProject/2019-02-03/README.md

 ---
 responsible:	
 - Only Responsible
-description: 	A description of this example experiment.
+description: 	A description of another example experiment.
 
 results:
 - file:	"*.dat"

setup.py

@@ -155,6 +155,7 @@ def setup_package():
         author='Henrik tom Wörden',
         author_email='h.tomwoerden@indiscale.com',
         install_requires=["caosdb>=0.4.0",
+                          "openpyxl>=3.0.0",
                           "pandas>=1.2.0",
                           "xlrd>=2.0",
                           ],

unittests/test_table_importer.py

@@ -77,7 +77,8 @@ class ConverterTest(unittest.TestCase):
         # TODO datatypes are different; fix it
         assert df.d.iloc[0] == datetime.datetime(1980, 12, 31, 13, 24, 23)
 
-    def test_date(self):
+    def test_date_xlsx(self):
+        """Test with .xlsx in order to check openpyxl engine."""
         test_file = os.path.join(os.path.dirname(__file__), "date.xlsx")
         self.importer = XLSImporter(converters={'a': date_converter,
                                                 'b': date_converter,
@@ -91,6 +92,21 @@ class ConverterTest(unittest.TestCase):
         assert df.shape[0] == 2
         assert df.a.iloc[0] == df.b.iloc[0] == df.c.iloc[0]
 
+    def test_date_xls(self):
+        """Test with .xls in order to check xlrd engine."""
+        test_file = os.path.join(os.path.dirname(__file__), "date.xls")
+        self.importer = XLSImporter(converters={'a': date_converter,
+                                                'b': date_converter,
+                                                'c': partial(date_converter,
+                                                             fmt="%d.%m.%y")
+                                                }, obligatory_columns=['a'])
+
+        xls_file = pd.io.excel.ExcelFile(test_file)
+        df = xls_file.parse()
+        df = self.importer.read_xls(test_file)
+        assert df.shape[0] == 2
+        assert df.a.iloc[0] == df.b.iloc[0] == df.c.iloc[0]
+
     def test_inc_date(self):
         incomplete_date_converter("2020", fmts={"%Y": "%Y"}) == "2020"
         incomplete_date_converter("02/2020",