Add some Python codes

Codes/Occurrences_of_Characters.py

@@ -0,0 +1,13 @@
+def encode(Test_string):
+    count = 0
+    Result = ""
+    for i in range(len(Test_string)):
+        if (i+1) < len(Test_string) and (Test_string[i] == Test_string[i+1]):
+            count += 1
+        else:
+            Result += str((count+1))+Test_string[i]
+            count = 0
+    return Result
+
+
+print(encode("ABBBBCCCCCCCCAB"))

Codes/Pair_Combinations_of_two_tuples.py

@@ -0,0 +1,8 @@
+def Pair_Combinations(Test_tuple_1, Test_tuple_2):
+    return [(a, b) for a in Test_tuple_1 for b in Test_tuple_2] +\
+        [(a, b) for a in Test_tuple_2 for b in Test_tuple_1]
+
+
+Test_tuple_1 = (4, 5)
+Test_tuple_2 = (7, 8)
+print(Pair_Combinations(Test_tuple_1, Test_tuple_2))

Codes/Remove_Tuple_of_length_k.py

@@ -0,0 +1,7 @@
+def Remove_Tuple(Test_list, K):
+    return [elements for elements in Test_list if len(elements) != K]
+
+
+Test_list = [(4, 5), (4, ), (8, 6, 7), (1, ), (3, 4, 6, 7)]
+K = int(input("Enter K: "))
+print(Remove_Tuple(Test_list, K))

Codes/Sort_list_by_second_items.py

@@ -0,0 +1,25 @@
+# Approach 1:
+
+from operator import itemgetter
+
+
+def Sort_by_second_items(Test_tup):
+    Test_tup.sort(key=lambda x: x[1])
+    return Test_tup
+
+
+Test_tup = [('for', 24), ('is', 10), ('Geeks', 28),
+            ('Geeksforgeeks', 5), ('portal', 20), ('a', 15)]
+print(Sort_by_second_items(Test_tup))
+
+# Approach 2:
+
+
+def Sort_by_second_items(Test_tup):
+    Test_tup.sort(key=itemgetter(1))
+    return Test_tup
+
+
+Test_tup = [('for', 24), ('is', 10), ('Geeks', 28),
+            ('Geeksforgeeks', 5), ('portal', 20), ('a', 15)]
+print(Sort_by_second_items(Test_tup))