exaples with dictionary

Author: Kinetics20

example_2.py

@@ -1,4 +1,5 @@
 # tuple packing
+from collections import OrderedDict
 
 x = 1, 2, 3, 4, 5
 print(type(x), x)
@@ -7,7 +8,7 @@
 
 t = (1, 2)
 t_1 = (1,)
-t_2 = tuple()
+t_2: tuple[int, ...] = tuple()
 t_3 = 1, 2, 3 # tuple packing
 
 def magic():
@@ -27,9 +28,33 @@ def magic():
 
 print(rest, rest_1, rest_2)
 
-x = 0
-y = 1
+x2: int = 0
+y2: int = 1
 
 # left side tuple unpacking = right side tuple packing
 # TODO ---- L - tuple unpacking | R - tuple packing
-x, y = y, x
+# TODO tuple unpacking works with every variable that has !! Sequence protocol !!
+
+x2, y2 = y2, x2
+
+t_6 = (1, 2, [1, 2])
+
+# TODO set must include hashable elements if tuple includes any kind of non hashable ,
+#  we can't create set on the base that tuple , set can takes iterable and create itself ,
+#  means __iter__ that returns object serves __iter__ and __next__
+
+
+
+# x_6 = {1, 2, t_6}
+
+x_7: set = {1, 2, 3} | {1, 4, 5}
+print(x_7)
+
+# TODO from python 3.6+ default dict is ordered
+
+y_7 = dict(q=1, z=2)
+y_8 = dict([(1, 2), (3, 4), (5, 6)])
+print(y_7, y_8, sep='\n')
+
+x_8 = OrderedDict([(1, 2), (3, 4), (5, 6)])
+print(y_8.get(999, 42))