Replace all double quotes strings with single quoted strings.

code/iottb/utils/capture_metadata_utils.py

@@ -9,12 +9,12 @@ def set_device_ip_address(ip_addr: str, file_path: Path):
     assert file_path.is_file()
     with file_path.open('r') as f:
         data = json.load(f)
-    current_ip = data["device_ip_address"]
+    current_ip = data['device_ip_address']
     if current_ip is not None:
-        print(f"Device IP Address is set to {current_ip}")
-        response = input(f"Do you want to change the recorded IP address to {ip_addr}? [Y/N] ")
-        if response.upper() == "N":
-            print("Aborting change to device IP address")
+        print(f'Device IP Address is set to {current_ip}')
+        response = input(f'Do you want to change the recorded IP address to {ip_addr}? [Y/N] ')
+        if response.upper() == 'N':
+            print('Aborting change to device IP address')
             return ReturnCodes.ABORTED
     with file_path.open('w') as f:
         json.dump(data, f)
@@ -26,12 +26,12 @@ def set_device_mac_address(mac_addr: str, file_path: Path):
     assert file_path.is_file()
     with file_path.open('r') as f:
         data = json.load(f)
-    current_mac = data["device_mac_address"]
+    current_mac = data['device_mac_address']
     if current_mac is not None:
-        print(f"Device MAC Address is set to {current_mac}")
-        response = input(f"Do you want to change the recorded MAC address to {mac_addr}? [Y/N] ")
-        if response.upper() == "N":
-            print("Aborting change to device MAC address")
+        print(f'Device MAC Address is set to {current_mac}')
+        response = input(f'Do you want to change the recorded MAC address to {mac_addr}? [Y/N] ')
+        if response.upper() == 'N':
+            print('Aborting change to device MAC address')
             return ReturnCodes.ABORTED
     with file_path.open('w') as f:
         json.dump(data, f)

code/iottb/utils/capture_utils.py

@@ -16,29 +16,29 @@ def get_capture_date_folder(device_root: Path):
             try:
                 today_folder.mkdir()
             except FileExistsError:
-                print(f"Folder {today_folder} already exists")
+                print(f'Folder {today_folder} already exists')
         return today_folder
-    raise FileNotFoundError(f"Given path {device_root} is not a device root directory")
+    raise FileNotFoundError(f'Given path {device_root} is not a device root directory')
 
 
 def get_capture_src_folder(device_folder: Path):
-    assert device_folder.is_dir(), f"Given path {device_folder} is not a folder"
+    assert device_folder.is_dir(), f'Given path {device_folder} is not a folder'
     today_iso = get_iso_date()
     max_sequence_number = 1
     for d in device_folder.iterdir():
         if d.is_dir() and d.name.startswith(f'{today_iso}_capture_'):
             name = d.name
-            num = int(name.split("_")[2])
+            num = int(name.split('_')[2])
             max_sequence_number = max(max_sequence_number, num)
 
     next_sequence_number = max_sequence_number + 1
-    return device_folder.joinpath(f"{today_iso}_capture_{next_sequence_number:03}")
+    return device_folder.joinpath(f'{today_iso}_capture_{next_sequence_number:03}')
 
 
 def make_capture_src_folder(capture_src_folder: Path):
     try:
         capture_src_folder.mkdir()
     except FileExistsError:
-        print(f"Folder {capture_src_folder} already exists")
+        print(f'Folder {capture_src_folder} already exists')
     finally:
         return capture_src_folder

code/iottb/utils/tcpdump_utils.py

@@ -5,25 +5,25 @@ from typing import Optional
 
 
 def check_installed() -> bool:
-    """Check if tcpdump is installed and available on the system path."""
+    '''Check if tcpdump is installed and available on the system path.'''
     return shutil.which('tcpdump') is not None
 
 
 def ensure_installed():
-    """Ensure that tcpdump is installed, raise an error if not."""
+    '''Ensure that tcpdump is installed, raise an error if not.'''
     if not check_installed():
-        raise RuntimeError("tcpdump is not installed. Please install it to continue.")
+        raise RuntimeError('tcpdump is not installed. Please install it to continue.')
 
 
 def list_interfaces() -> str:
-    """List available network interfaces using tcpdump."""
+    '''List available network interfaces using tcpdump.'''
     ensure_installed()
     try:
         result = subprocess.run(['tcpdump', '--list-interfaces'], capture_output=True, text=True, check=True)
         return result.stdout
     except subprocess.CalledProcessError as e:
-        print(f"Failed to list interfaces: {e}")
-        return ""
+        print(f'Failed to list interfaces: {e}')
+        return ''
 
 
 def is_valid_ipv4(ip: str) -> bool:

code/iottb/utils/utils.py

@@ -13,6 +13,6 @@ def subfolder_exists(parent: Path, child: str):
 
 
 def generate_unique_string_with_prefix(prefix: str):
-    return prefix + "_" + str(uuid.uuid4())
+    return prefix + '_' + str(uuid.uuid4())