update the code as per user need.

1 File handle/File handle text/question3.py

@@ -2,23 +2,36 @@
 the contents of text file named “happy.txt” and count
 the number of lines which starts with either “I‟ or “M‟."""
 
+import os
+import time
+file_name= input("Enter the file name to create:- ")
+
 # step1:
-def write_to_file():
-    with open("happy.txt", "a") as F:
-        while True:
-            text = input("enter any text")
-            F.write(
-                text + "\n"
-            )  # write function takes exactly 1 arguement so concatenation
-            choice = input("do you want to enter more, y/n")
-            if choice == "n":
-                break
+print(file_name)
+
+
+
+def write_to_file(file_name):
+
+    if os.path.exists(file_name):
+        print(f"Error: {file_name} already exists.")
+
+    else:
+        with open(file_name, "a") as F:
+            while True:
+                text = input("enter any text")
+                F.write(
+                    text + "\n"
+                )  # write function takes exactly 1 arguement so concatenation
+                choice = input("do you want to enter more, y/n")
+                if choice == "n":
+                    break
 
 # write_to_file()
 
 # step2:
 def check_first_letter():
-    with open("happy.txt") as F:
+    with open(file_name) as F:
         value = F.read()
         count = 0
         line = value.split()
@@ -29,4 +42,7 @@ def check_first_letter():
         print("The total number of sentences starting with I or M are", count)
 
 if __name__ == "__main__":
+
+    write_to_file(file_name)
+    time.sleep(1)
     check_first_letter()