diff --git a/src/macaron/malware_analyzer/pypi_heuristics/metadata/anomalous_version.py b/src/macaron/malware_analyzer/pypi_heuristics/metadata/anomalous_version.py
index 2f39d6f70..f02c4f595 100644
--- a/src/macaron/malware_analyzer/pypi_heuristics/metadata/anomalous_version.py
+++ b/src/macaron/malware_analyzer/pypi_heuristics/metadata/anomalous_version.py
@@ -69,7 +69,13 @@ def __init__(self) -> None:
         self.major_threshold, self.epoch_threshold, self.day_publish_error = self._load_defaults()
 
     def _load_defaults(self) -> tuple[int, int, int]:
-        """Load default settings from defaults.ini."""
+        """Load default settings from defaults.ini.
+
+        Returns
+        -------
+        tuple[int, int, int]:
+            The Major threshold, Epoch threshold, and Day published error.
+        """
         section_name = "heuristic.pypi"
         if defaults.has_section(section_name):
             section = defaults[section_name]
@@ -78,7 +84,6 @@ def _load_defaults(self) -> tuple[int, int, int]:
                 section.getint("epoch_threshold"),
                 section.getint("day_publish_error"),
             )
-        # Major threshold, Epoch threshold, Day pushlish error
         return 20, 3, 4
 
     def analyze(self, pypi_package_json: PyPIPackageJsonAsset) -> tuple[HeuristicResult, dict[str, JsonType]]:
@@ -172,7 +177,7 @@ def analyze(self, pypi_package_json: PyPIPackageJsonAsset) -> tuple[HeuristicRes
         elif (
             ((version.major in months and version.minor in days) or (version.major in days and version.minor in months))
             and version.micro in years
-        ) or self.__integer_date(version.major, years, months, days):
+        ) or self._integer_date(version.major, years, months, days):
             # must include day and year for this to be calendar
             calendar = True
 
@@ -203,7 +208,36 @@ def analyze(self, pypi_package_json: PyPIPackageJsonAsset) -> tuple[HeuristicRes
 
         return HeuristicResult.PASS, detail_info
 
-    def __integer_date(self, value: int, years: list[int], months: list[int], days: list[int]) -> bool:
+    def _integer_date(self, value: int, years: list[int], months: list[int], days: list[int]) -> bool:
+        """Check whether the provided integer represents a date.
+
+        Valid representations are:
+        - YYYYMMDD
+        - YYYYDDMM
+        - YYDDMM
+        - YYMMDD
+        - MMDDYYYY
+        - DDMMYYYY
+        - DDMMYY
+        - MMDDYY
+
+        Parameters
+        ----------
+        value: int
+            The integer to check.
+        years: list[int]
+            A list of integers representing valid years for components of value to represent.
+        months: list[int]
+            A list of integers representing valid months for components of value to represent.
+        days: list[int]
+            A list of integers representing valid days for components of value to represent.
+
+        Returns
+        -------
+        bool:
+            True if the integer may represent a date present in the list of valid years, months and days.
+            False otherwise.
+        """
         for date_format in self.DIGIT_DATE_FORMATS:
             if (date := parse_datetime(str(value), date_format)) is None:
                 continue