Swapcase a input string

Author: RajanSikarwar

Remove duplicate lines from Text file/remove_duplicate_lines.py

@@ -1,3 +1,8 @@
+"""
+Replace `sample_file_path.txt` with the location of desired text file to remove duplicate lines(full location path if it is not in the same directory as the code file and only the name if it is in the same directory as the code file).
+A new text file "clean_text.txt" will be created in the same directory as the code file with no duplicate lines from `sample_file_path.txt`. 
+"""
+
 content = open('sample_file_path.txt','r').readlines()
 
 content_set = set(content)

String/sWAPcASE.py

@@ -0,0 +1,26 @@
+"""
+Converts and Returns all lowercase letters to uppercase letters and vice versa.
+"""
+
+def swap_case(string):
+    lst= list()
+    ascii_val = list(map(ord, string))
+
+    for value in ascii_val:
+        if value>64 and value<92:
+            value = value + 32
+        elif value>96 and value<124:
+            value = value - 32
+        else:
+            value = value
+        lst.append(value)
+    scase = list(map(chr , lst))
+
+    res = ""
+    for c in scase:
+        res += c
+
+    return res
+
+str_input = input()
+print(swap_case(str_input))