1 files changed, 9 insertions, 9 deletions

diff --git a/asciidoc/utils.py b/asciidoc/utils.py
index fee2c00..82863c3 100644
--- a/asciidoc/utils.py
+++ b/asciidoc/utils.py
@@ -3,7 +3,7 @@ import math
 import os
 import re
 import time
-from typing import Optional
+from typing import List, Optional, Tuple, Union
 import unicodedata
 
 
@@ -36,7 +36,7 @@ def assign(dst, src):
         setattr(dst, a, v)
 
 
-def strip_quotes(s):
+def strip_quotes(s: str) -> str:
     """Trim white space and, if necessary, quote characters from s."""
     s = s.strip()
     # Strip quotation mark characters from quoted strings.
@@ -54,7 +54,7 @@ def is_re(s) -> bool:
         return False
 
 
-def re_join(relist):
+def re_join(relist: List) -> List:
     """Join list of regular expressions re1,re2,... to single regular
     expression (re1)|(re2)|..."""
     if len(relist) == 0:
@@ -68,7 +68,7 @@ def re_join(relist):
     return result
 
 
-def lstrip_list(s):
+def lstrip_list(s: Union[List, Tuple]) -> Union[List, Tuple]:
     """
     Return list with empty items from start of list removed.
     """
@@ -80,7 +80,7 @@ def lstrip_list(s):
     return s[i:]
 
 
-def rstrip_list(s):
+def rstrip_list(s: Union[List, Tuple]) -> Union[List, Tuple]:
     """
     Return list with empty items from end of list removed.
     """
@@ -92,7 +92,7 @@ def rstrip_list(s):
     return s[:i + 1]
 
 
-def strip_list(s):
+def strip_list(s: Union[List, Tuple]) -> Union[List, Tuple]:
     """
     Return list with empty items from start and end of list removed.
     """
@@ -133,7 +133,7 @@ def dovetail_tags(stag, content, etag):
     return dovetail(dovetail(stag, content), etag)
 
 
-def py2round(n, d=0):
+def py2round(n: Union[float, int], d: int = 0) -> int:
     """Utility function to get python2 rounding in python3. Python3 changed it such that
     given two equally close multiples, it'll round towards the even choice. For example,
     round(42.5) == 42 instead of the expected round(42.5) == 43). This function gives us
@@ -155,14 +155,14 @@ east_asian_widths = {
 column widths."""
 
 
-def column_width(s):
+def column_width(s: str) -> int:
     width = 0
     for c in s:
         width += east_asian_widths[unicodedata.east_asian_width(c)]
     return width
 
 
-def date_time_str(t):
+def date_time_str(t: float) -> Tuple[str, str]:
     """Convert seconds since the Epoch to formatted local date and time strings."""
     source_date_epoch = os.environ.get('SOURCE_DATE_EPOCH')
     if source_date_epoch is not None: