4 files changed, 7 insertions, 7 deletions
diff --git a/src/tablib/formats/_html.py b/src/tablib/formats/_html.py
index bb31128..edf0c0a 100644
--- a/src/tablib/formats/_html.py
+++ b/src/tablib/formats/_html.py
@@ -53,7 +53,7 @@ def export_book(databook):
 
     for i, dset in enumerate(databook._datasets):
         title = (dset.title if dset.title else 'Set %s' % (i))
-        wrapper.write('<%s>%s</%s>\n' % (BOOK_ENDINGS, title, BOOK_ENDINGS))
+        wrapper.write('<{}>{}</{}>\n'.format(BOOK_ENDINGS, title, BOOK_ENDINGS))
         wrapper.write(dset.html)
         wrapper.write('\n')
 
diff --git a/src/tablib/formats/_jira.py b/src/tablib/formats/_jira.py
index 99dbf3e..96efcf7 100644
--- a/src/tablib/formats/_jira.py
+++ b/src/tablib/formats/_jira.py
@@ -19,7 +19,7 @@ def export_set(dataset):
 
     header = _get_header(dataset.headers) if dataset.headers else ''
     body = _get_body(dataset)
-    return '%s\n%s' % (header, body) if header else body
+    return '{}\n{}'.format(header, body) if header else body
 
 
 def _get_body(dataset):
@@ -31,6 +31,6 @@ def _get_header(headers):
 
 
 def _serialize_row(row, delimiter='|'):
-    return '%s%s%s' % (delimiter,
-                       delimiter.join([str(item) if item else ' ' for item in row]),
-                       delimiter)
+    return '{}{}{}'.format(delimiter,
+                           delimiter.join([str(item) if item else ' ' for item in row]),
+                           delimiter)
diff --git a/src/tablib/formats/_rst.py b/src/tablib/formats/_rst.py
index 8b5cfa0..8067f73 100644
--- a/src/tablib/formats/_rst.py
+++ b/src/tablib/formats/_rst.py
@@ -34,7 +34,7 @@ def _max_word_len(text):
     8
 
     """
-    return max((len(word) for word in text.split())) if text else 0
+    return max(len(word) for word in text.split()) if text else 0
 
 
 def _get_column_string_lengths(dataset):
diff --git a/src/tablib/formats/_xlsx.py b/src/tablib/formats/_xlsx.py
index 0a947b8..6ac46b9 100644
--- a/src/tablib/formats/_xlsx.py
+++ b/src/tablib/formats/_xlsx.py
@@ -112,7 +112,7 @@ def dset_sheet(dataset, ws, freeze_panes=True):
         row_number = i + 1
         for j, col in enumerate(row):
             col_idx = get_column_letter(j + 1)
-            cell = ws['%s%s' % (col_idx, row_number)]
+            cell = ws['{}{}'.format(col_idx, row_number)]
 
             # bold headers
             if (row_number == 1) and dataset.headers: