Create sequences_mert_can_fidan.py

## My Changes
 
Firstly, I created four values and after that I created three functions named as remove_duplicates, list_counts and reverse_dict.
 
## Checklist
- [x] I have read [CONTRIBUTING].
- [x] I have performed a self-review of my own code.
- [x] I have run the code locally and it works as explained.
- [x] I have commented my code, particularly in hard-to-understand areas

Author: usrmertc

Week02/sequences_mert_can_fidan.py

@@ -0,0 +1,24 @@
+my_list = ["Mert", "Can", "Fidan", "Can", "Fidan",24,24,24]
+my_tuple = ("Mert", "Can", "Fidan")
+my_set = {"Mert", "Can", "Fidan"}
+my_dictionary = {
+  "name": "Mert Can Fidan",
+  "age": 24,
+  "alive": True
+}
+
+def remove_duplicates (any_list):
+  return list(set(any_list))
+
+# Simply creates an empty dictionary and copy of given list without duplicates of items. 
+# After that checks item counts one byu one and adds to newly created dictionary.
+def list_counts (any_list):
+  empty_dict = {}
+  for i in set(any_list): empty_dict[i] = any_list.count(i)
+  return empty_dict
+
+# Creates empty dictionary and switch rows in dictionary one by one with foor loop.
+def reverse_dict (any_dict):
+  empty_dict = {}
+  for key,value in any_dict.items(): empty_dict[value] = key 
+  return empty_dict