1 files changed, 32 insertions, 0 deletions
diff --git a/challenge-002/lubos-kolouch/python/ch-1.py b/challenge-002/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..3e431db4ad
--- /dev/null
+++ b/challenge-002/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""
+remove_leading_zeros - removes leading zeros from positive numbers
+"""
+
+import re
+import unittest
+
+
+def remove_leading_zeros(num: str) -> str:
+    """
+    Removes leading zeros from the positive number in `num` and returns the result.
+
+    Args:
+        num: A string containing a positive number with leading zeros.
+
+    Returns:
+        A string with the number in `num` with leading zeros removed.
+    """
+    return re.sub(r'^0+(?!$)', '', num)
+
+
+class TestRemoveLeadingZeros(unittest.TestCase):
+
+    def test_remove_leading_zeros(self):
+        self.assertEqual(remove_leading_zeros("0001234"), "1234")
+        self.assertEqual(remove_leading_zeros("000"), "0")
+        self.assertEqual(remove_leading_zeros("0"), "0")
+
+
+if __name__ == '__main__':
+    unittest.main()