Codewars OOP-Aufgabe

src/aufgabe2.py

@@ -0,0 +1,58 @@
+class VersionManager():
+    
+    def __init__(self, version="0.0.1"):
+        
+        self.version = version
+        
+        if self.version == "":
+            self.version = "0.0.1"
+        
+        num = self.version.split(".")
+        
+        while len(num) < 3:
+            num.append("0")
+            
+        if len(num) > 3:
+            num = num[0:3] 
+        
+        try:
+            self.ma = int(num[0])
+            self.mi = int(num[1])
+            self.pa = int(num[2])
+        except:
+            raise Exception("Error occured while parsing version!")
+        
+        self.history = []
+        
+    def major(self):
+        self.history.append((self.ma, self.mi, self.pa))
+        self.ma = self.ma + 1
+        self.mi = 0
+        self.pa = 0
+        
+        return self
+        
+    def minor(self):
+        self.history.append((self.ma, self.mi, self.pa))
+        self.mi = self.mi + 1
+        self.pa = 0
+        
+        return self
+        
+    def patch(self):
+        self.history.append((self.ma, self.mi, self.pa))
+        self.pa = self.pa + 1
+        
+        return self
+        
+    def rollback(self):
+        if not self.history:
+            raise Exception("Cannot rollback!")
+            
+        last = self.history.pop()
+        self.ma, self.mi, self.pa = last
+        
+        return self
+        
+    def release(self):
+        return f"{self.ma}.{self.mi}.{self.pa}"