Compatibility with new openpyxl

src/pretix/base/exporter.py

@@ -128,7 +128,7 @@ class ListExporter(BaseExporter):
 
     def _render_xlsx(self, form_data, output_file=None):
         wb = Workbook()
-        ws = wb.get_active_sheet()
+        ws = wb.active
         try:
             ws.title = str(self.verbose_name)
         except:
@@ -207,7 +207,7 @@ class MultiSheetListExporter(ListExporter):
 
     def _render_xlsx(self, form_data, output_file=None):
         wb = Workbook()
-        ws = wb.get_active_sheet()
+        ws = wb.active
         wb.remove(ws)
         for s, l in self.sheets:
             ws = wb.create_sheet(str(l))

src/requirements/production.txt

@@ -37,7 +37,7 @@ babel
 django-i18nfield>=1.4.0
 django-hijack>=2.1.10,<2.2.0
 jsonschema
-openpyxl
+openpyxl==3.0.*
 django-oauth-toolkit==1.2.*
 oauthlib==3.1.*
 django-jsonfallback>=2.1.2

src/setup.py

@@ -143,7 +143,7 @@ setup(
         'django-localflavor',
         'jsonschema',
         'django-hijack>=2.1.10,<2.2.0',
-        'openpyxl',
+        'openpyxl==3.0.*',
         'django-oauth-toolkit==1.2.*',
         'oauthlib==3.1.*',
         'urllib3==1.24.*',  # required by current requests