here is my homework

HW1.py

@@ -0,0 +1,139 @@
+from array import array
+
+
+class ArrayList:
+    def __init__(self, type_list, data=[]):
+        self.type = type_list
+        if type_list == int:
+            self.data = array('i', data)
+        elif type_list == float:
+            self.data = array('d', data)
+        elif type_list == str:
+            self.data = array('u', data)
+        else:
+            raise Exception
+
+    def __str__(self):
+        return str(list(self.data))
+    # todo
+
+    def __getitem__(self, index):
+        stroka = ArrayList(self.type)
+        if type(index) == slice:
+            start = index.start
+            stop = index.stop
+            step = index.step
+            if start == None:
+                if step > 0:
+                    start = 0
+                else:
+                    start = len(self.data) - 1
+            if stop == None:
+                if step > 0:
+                    stop = len(self.data)
+                else:
+                    stop = 1185500000000000 # сюда очень большое число
+            if step == None:
+                step = 1
+            if start < 0:
+                start = len(self.data) + start
+            if stop < 0:
+                stop = len(self.data) + stop
+            if stop == 1185500000000000:
+                stop = -1
+            if (step > 0 and start > stop):
+                stroka.data = []
+            elif (step < 0 and start < stop):
+                stroka.data = []
+            else:
+                for i in range(start, stop, step):
+                    if self.type == int:
+                        dat = array('i', self[i].data)
+                    elif self.type == float:
+                        dat = array('d', self[i].data)
+                    elif self.type == str:
+                        dat = array('u', self[i].data)
+                    stroka.data = stroka.data + dat
+            return stroka
+        else:
+            stroka.data = [self.data[index]]
+            return stroka
+
+    def __len__(self):
+        return len(self.data)
+
+    def __contains__(self, element):
+        # 'in' для array.array использовать нельзя
+        for i in range(len(self.data)):
+            if self.data[i] == element:
+                return True
+            elif i == len(self.data) - 1:
+                return False
+            else:
+                pass
+
+    def __iter__(self):
+        return Iterator(self.data)
+
+    def __reversed__(self):
+        return iter(self[::-1])
+
+    def index(self, element, start=0, end=None):
+        if end is None:
+            end = len(self.data)
+        c = 0
+        for i in range(start, end):
+            if self.data[i] == element:
+                return c
+            else:
+                c += 1
+        raise Exception
+
+    def count(self, element, start=0, end=None):
+        count = 0
+        if end is None:
+            end = len(self.data)
+        for i in range(start, end):
+            if self.data[i] == element:
+                count += 1
+            else:
+                continue
+        return count
+
+
+
+class Iterator:
+    def __init__(self, arraylist):
+        self.i = -1
+        self.arraylist = arraylist
+
+    def __next__(self):
+        if self.i < len(self.arraylist) - 1:
+            self.i += 1
+            return self.arraylist[self.i]
+        else:
+            raise StopIteration
+
+    def __iter__(self):
+        return self
+
+
+arraylist = ArrayList(int, range(0, 55, 6))
+print(arraylist, '\n')
+print(arraylist[4])
+print(arraylist[3:6])
+print(arraylist[::-1], '\n')
+print(len(arraylist), '\n')
+print(54 in arraylist)
+print(634784 in arraylist, '\n')
+print((ArrayList(int, reversed(arraylist))), '\n')
+print(arraylist.index(42))
+try:
+    print(arraylist.index(34234))
+except:
+    print('error', '\n')
+print(arraylist.count(42))
+for i in arraylist:
+    print(i)
+
+