ruff fix

Author: lighting9999

1 File handle/File handle binary/Deleting record in a binary file.py

@@ -1,5 +1,5 @@
 import pickle
-from typing import List, Tuple
+
 
 def delete_student_record() -> None:
     """
@@ -21,14 +21,14 @@ def delete_student_record() -> None:
     try:
         # Read existing student records from file
         with open("studrec.dat", "rb") as file:
-            student_records: List[Tuple[int, ...]] = pickle.load(file)
+            student_records: list[tuple[int, ...]] = pickle.load(file)
             print("Current student records:", student_records)
 
         # Get roll number to delete
         roll_number: int = int(input("Enter the roll number to delete: "))
 
         # Filter out the record with the specified roll number
-        updated_records: List[Tuple[int, ...]] = [
+        updated_records: list[tuple[int, ...]] = [
             record for record in student_records if record[0] != roll_number
         ]
 

1 File handle/File handle binary/File handle binary read (record in non list form).py

@@ -1,6 +1,6 @@
 import os
 import pickle
-from typing import List, Tuple
+
 
 def read_binary_file() -> None:
     """
@@ -28,7 +28,7 @@ def read_binary_file() -> None:
     try:
         # Read student records
         with open(file_path, "rb") as file:
-            student_records: List[Tuple[int, str, float]] = pickle.load(file)
+            student_records: list[tuple[int, str, float]] = pickle.load(file)
 
             # Print records in a formatted table
             print("\nStudent Records:")

1 File handle/File handle binary/Update a binary file.py

@@ -1,6 +1,6 @@
 import os
 import pickle
-from typing import List, Tuple
+
 
 def initialize_file_if_not_exists(file_path: str) -> None:
     """
@@ -36,7 +36,7 @@ def update_student_record(file_path: str) -> None:
     try:
         with open(file_path, "rb+") as f:
             # Load existing records
-            records: List[Tuple[int, str, float]] = pickle.load(f)
+            records: list[tuple[int, str, float]] = pickle.load(f)
 
             if not records:
                 print("No records found in the file.")
@@ -90,7 +90,7 @@ def display_all_records(file_path: str) -> None:
 
     try:
         with open(file_path, "rb") as f:
-            records: List[Tuple[int, str, float]] = pickle.load(f)
+            records: list[tuple[int, str, float]] = pickle.load(f)
 
             if not records:
                 print("No records found in the file.")

1 File handle/File handle binary/Update a binary file2.py

@@ -1,6 +1,6 @@
 import os
 import pickle
-from typing import List, Tuple
+
 
 def initialize_file_if_not_exists(file_path: str) -> None:
     """
@@ -36,7 +36,7 @@ def update_student_record(file_path: str) -> None:
     try:
         with open(file_path, "rb+") as f:
             # Load existing records
-            records: List[Tuple[int, str, int]] = pickle.load(f)
+            records: list[tuple[int, str, int]] = pickle.load(f)
 
             if not records:
                 print("No records found in the file.")

1 File handle/File handle binary/question 1 (elegible for remedial, top marks).py

@@ -1,6 +1,6 @@
 import os
 import pickle
-from typing import List, Tuple
+
 
 def initialize_file_if_not_exists(file_path: str) -> None:
     """
@@ -32,7 +32,7 @@ def write_sample_data(file_path: str) -> None:
     Args:
         file_path (str): Path to the file to write data to.
     """
-    sample_data: List[Tuple[int, str, float]] = [
+    sample_data: list[tuple[int, str, float]] = [
         (1, "Ramya", 30.0),
         (2, "Vaishnavi", 60.0),
         (3, "Anuya", 40.0),
@@ -58,7 +58,7 @@ def count_remedial_students(file_path: str) -> None:
 
     try:
         with open(file_path, "rb") as file:
-            students: List[Tuple[int, str, float]] = pickle.load(file)
+            students: list[tuple[int, str, float]] = pickle.load(file)
 
             remedial_students = [student for student in students if student[2] < 40.0]
 
@@ -84,7 +84,7 @@ def count_top_scorers(file_path: str) -> None:
 
     try:
         with open(file_path, "rb") as file:
-            students: List[Tuple[int, str, float]] = pickle.load(file)
+            students: list[tuple[int, str, float]] = pickle.load(file)
 
             if not students:
                 print("No student records found.")
@@ -115,7 +115,7 @@ def display_all_students(file_path: str) -> None:
 
     try:
         with open(file_path, "rb") as file:
-            students: List[Tuple[int, str, float]] = pickle.load(file)
+            students: list[tuple[int, str, float]] = pickle.load(file)
 
             print("\nAll student records:")
             print(f"{'ROLL':<8}{'NAME':<15}{'PERCENTAGE':<12}")

1 File handle/File handle binary/search record in binary file.py

@@ -1,6 +1,6 @@
 import os
 import pickle
-from typing import List, Tuple
+
 
 def initialize_file_if_not_exists(file_path: str) -> None:
     """
@@ -35,7 +35,7 @@ def search_student_record(file_path: str) -> None:
 
     try:
         with open(file_path, "rb") as f:
-            records: List[Tuple[int, str, float]] = pickle.load(f)
+            records: list[tuple[int, str, float]] = pickle.load(f)
 
             if not records:
                 print("No records found in the file.")

1 File handle/File handle text/counter.py

@@ -1,4 +1,4 @@
-from typing import Dict
+
 
 class TextCounter:
     """
@@ -56,7 +56,7 @@ def _read_content(self, content: str, is_file_path: bool) -> str:
             UnicodeDecodeError: If the file cannot be decoded properly
         """
         if is_file_path:
-            with open(content, 'r', encoding='utf-8') as file:
+            with open(content, encoding='utf-8') as file:
                 return file.read()
         return content
 
@@ -103,7 +103,7 @@ def get_total(self) -> int:
                 self.count_digits + 
                 self.count_special)
 
-    def get_stats(self) -> Dict[str, int]:
+    def get_stats(self) -> dict[str, int]:
         """
         Return detailed character statistics.
         

1 File handle/File handle text/file handle 12 length of line in text file.py

@@ -1,18 +1,18 @@
 import os
 import sys
 import time
-from typing import NoReturn, List, Tuple
+from typing import NoReturn
 
 
-def _get_invalid_filename_chars() -> Tuple[str, ...]:
+def _get_invalid_filename_chars() -> tuple[str, ...]:
     """Return a tuple of invalid filename characters for the current OS."""
     if sys.platform.startswith('win'):
         return ('\\', '/', ':', '*', '?', '"', '<', '>', '|')
     else:  # Linux/macOS
         return ('/',)
 
 
-def is_valid_filename(filename: str) -> Tuple[bool, str]:
+def is_valid_filename(filename: str) -> tuple[bool, str]:
     """
     Validate if a filename is valid for the current operating system.
     
@@ -98,13 +98,13 @@ def print_short_lines(file_name: str) -> None:
         return
 
     try:
-        with open(file_name, "r", encoding="utf-8") as file:
-            lines: List[str] = file.readlines()
+        with open(file_name, encoding="utf-8") as file:
+            lines: list[str] = file.readlines()
             if not lines:
                 print(f"Info: File '{file_name}' is empty.")
                 return
 
-            short_lines: List[str] = [line for line in lines if len(line.rstrip('\n')) < 50]
+            short_lines: list[str] = [line for line in lines if len(line.rstrip('\n')) < 50]
 
             if not short_lines:
                 print("No lines with length < 50 characters (excluding newline).")

1 File handle/File handle text/input,output and error streams.py

@@ -21,7 +21,7 @@ def read_and_print_file(file_path: str) -> None:
     """
     try:
         # Open file in read mode with explicit UTF-8 encoding
-        with open(file_path, mode='r', encoding='utf-8') as file:
+        with open(file_path, encoding='utf-8') as file:
             # Read and print lines in chunks for better memory efficiency
             for line in file:
                 sys.stdout.write(line)

1 File handle/File handle text/question 2.py

@@ -1,7 +1,6 @@
-from typing import List, Tuple
 
 
-def display_short_words(file_path: str) -> Tuple[List[str], int]:
+def display_short_words(file_path: str) -> tuple[list[str], int]:
     """
     Read a text file and extract words with fewer than 4 characters.
     
@@ -25,14 +24,14 @@ def display_short_words(file_path: str) -> Tuple[List[str], int]:
         OSError: For other OS-related errors (e.g., invalid path)
     """
     # Read entire file content
-    with open(file_path, 'r', encoding='utf-8') as file:
+    with open(file_path, encoding='utf-8') as file:
         content: str = file.read()
 
     # Split content into words (handles multiple whitespace characters)
-    words: List[str] = content.split()
+    words: list[str] = content.split()
 
     # Filter words with length < 4 using a generator expression for memory efficiency
-    short_words: List[str] = [word for word in words if len(word) < 4]
+    short_words: list[str] = [word for word in words if len(word) < 4]
 
     return short_words, len(short_words)