kept easy to understand code

Author: arsho

Strings/Findastring.py

@@ -4,20 +4,21 @@
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
+Updated   : 08 February 2023
 Problem   : https://www.hackerrank.com/challenges/find-a-string/problem
 """
 
 
 def count_substring(string, sub_string):
-    return sum(
-        string[i : i + len(sub_string)] == sub_string
-        for i in range(len(string) - len(sub_string) + 1)
-    )
+    count_sub_string = 0
+    for i in range(len(string) - len(sub_string) + 1):
+        if string[i : i + len(sub_string)] == sub_string:
+            count_sub_string += 1
+    return count_sub_string
 
-
-if __name__ == "__main__":
+if __name__ == '__main__':
     string = input().strip()
     sub_string = input().strip()
-
+    
     count = count_substring(string, sub_string)
     print(count)