+
+
+_VALIDATE_RE = re.compile("^\+?[0-9]{10,}$")
+
+
+def is_valid_number(number):
+ """
+ @returns If This number be called ( syntax validation only )
+ """
+ return _VALIDATE_RE.match(number) is not None
+
+
+def parse_version(versionText):
+ """
+ >>> parse_version("0.5.2")
+ [0, 5, 2]
+ """
+ return [
+ int(number)
+ for number in versionText.split(".")
+ ]
+
+
+def compare_versions(leftParsedVersion, rightParsedVersion):
+ """
+ >>> compare_versions([0, 1, 2], [0, 1, 2])
+ 0
+ >>> compare_versions([0, 1, 2], [0, 1, 3])
+ -1
+ >>> compare_versions([0, 1, 2], [0, 2, 2])
+ -1
+ >>> compare_versions([0, 1, 2], [1, 1, 2])
+ -1
+ >>> compare_versions([0, 1, 3], [0, 1, 2])
+ 1
+ >>> compare_versions([0, 2, 2], [0, 1, 2])
+ 1
+ >>> compare_versions([1, 1, 2], [0, 1, 2])
+ 1
+ """
+ for left, right in zip(leftParsedVersion, rightParsedVersion):
+ if left < right:
+ return -1
+ elif right < left:
+ return 1
+ else:
+ return 0