done changes according to review

Author: Droid-An

implement-shell-tools/cat/cat.py

@@ -1,13 +1,16 @@
-import os
 import argparse
 
 parser = argparse.ArgumentParser(
     prog="cat",
     description="Concatenate and print files",
 )
 
-parser.add_argument("-n",action='store_true', help="Number the output lines, starting at 1")
-parser.add_argument("-b", action='store_true', help="Number the non-blank output lines, starting at 1")
+parser.add_argument(
+    "-n", action="store_true", help="Number the output lines, starting at 1"
+)
+parser.add_argument(
+    "-b", action="store_true", help="Number the non-blank output lines, starting at 1"
+)
 parser.add_argument("path", nargs="+", help="The path to search")
 
 args = parser.parse_args()
@@ -16,18 +19,17 @@
         lines = file.readlines()
         line_num = 1
         for line in lines:
-            lin = line.rstrip('\n')
+            lin = line.rstrip("\n")
 
             if args.b:
-                if lin =="":
+                if lin == "":
                     print()
                 else:
                     print(line_num, lin)
-                    line_num += 1 
+                    line_num += 1
             elif args.n:
                 print(line_num, lin)
                 line_num += 1
 
             else:
                 print(lin)
-

implement-shell-tools/ls/ls.py

@@ -38,9 +38,4 @@ def path_proceeding(path_argument):
         files = os.listdir(path_argument)
         arguments_proceeding(files)
 
-
-
-path_proceeding(args.path)
-
-
-
+path_proceeding(args.path)