python os module does not rename the file, even if the file exists - os.rename(src, dst)

Question

I am trying to rename files from a directory. But for some reason which I do not know, the files are not getting renamed.

Code:


def extract_info_from_filename(file_name):
    parts = file_name.split('Z')
    part1 = parts[0]
    part2 = parts[1]
    
    return part1, part2

def find_csv_files_to_rename(directory):
    for root, dirs, files in os.walk(directory):
        if 'rename' in root:
            for file_name in files:
                if file_name.endswith('.csv'):
                    original_file_path = root + '/' + file_name
                    print(f"File Name: {file_name}, Extracted Info: {extract_info_from_filename(file_name)}")
                    extracted_parts = extract_info_from_filename(file_name)
                    new_file_name = f"{extracted_parts[0]}Z_treatment{extracted_parts[1]}"
                    print(f"New File name: {new_file_name}")
                    #new_file_path = os.path.join(root,new_file_name)
                    new_file_path =root+'/'+new_file_name
                    print(f"New File Path Exists: {os.path.exists(new_file_path)}")
                    print(f"Original File Path Exists: {os.path.exists(original_file_path)}")
                    print(f"Root: {root}")
                    print(f"New file path: {new_file_path}")
                    if not os.path.exists(new_file_path):        
                        os.rename(original_file_path, new_file_path)
                        if os.rename(original_file_path, new_file_path):
                            print(f'Renamed: {file_name} -> {new_file_name} \n')
                    else:
                        print(f'File already exists: {original_file_path} \n')


root_directory = 'input_files'
find_csv_files_to_rename(root_directory)

Output is:

File Name: 2023-07-08T00_28_04_750Z_Aachen_01.01.2022-P06.2023.csv, Extracted Info: ('2023-07-08T00_28_04_750', '_Aachen_01.01.2022-P06.2023.csv')
New File name: 2023-07-08T00_28_04_750Z_treatment_Aachen_01.01.2022-P06.2023.csv
New File Path Exists: False
Original File Path Exists: False
Root: input_files\rename_and_validate\XXXX\year=2023\month=07\day=08\XXXX
New file path: input_files\rename_and_validate\XXXX\year=2023\month=07\day=08\XXXX/2023-07-08T00_28_04_750Z_treatment_Aachen_01.01.2022-P06.2023.csv

Error:

FileNotFoundError: [WinError 3] The system cannot find the path specified: 'input_files\\rename_and_validate\\XXXX\\year=2023\\month=07\\day=08\\XXXX/2023-07-08T00_28_04_750Z_Aachen_01.01.2022-P06.2023.csv' -> 'input_files\\rename_and_validate\\XXXX\\year=2023\\month=07\\day=08\\XXXX/2023-07-08T00_28_04_750Z_treatment_Aachen_01.01.2022-P06.2023.csv'

I kindly want to know the solution. I have tried all possible way of addressing the issue, from the modifying the paths (using .join function). But seems like the same issue.

you have the line os.rename(original_file_path, new_file_path) twice. Once alone, once in your if. After the first rename, the second must fail because the file is already renamed. Try removing the standalone line — FlyingTeller
– FlyingTeller, Commented Apr 16, 2024 at 9:26
Quite curious, it something to do with filename and the size of the name? — srinivas muralidharan
– srinivas muralidharan, Commented Apr 16, 2024 at 9:28
I would not say really Long. But something like = 'Folder name extra 2 or 3 words' — srinivas muralidharan
– srinivas muralidharan, Commented Apr 16, 2024 at 9:33

Ivan Sharapenkov · Accepted Answer · 2024-04-16 11:34:24Z

0

Answer was incorrect. Author found another solution The issue is resolved: It was about enabling LongPath in my windows through regedit

edited Apr 16, 2024 at 11:34

answered Apr 16, 2024 at 9:40

Ivan Sharapenkov

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4 Comments

srinivas muralidharan Over a year ago

File Name: 2023-07-08T00_28_04_750Z_Aachen_01.01.2022-P06.2023.csv, Extracted Info: ('2023-07-08T00_28_04_750', '_Aachen_01.01.2022-P06.2023.csv') New File name: 2023-07-08T00_28_04_750Z_treatment_Aachen_01.01.2022-P06.2023.csv New File Path Exists: False Original File Path Exists: False This is the output I receive based on your code. Could there be more scenarios why it fails? Technically it should work.

Ivan Sharapenkov Over a year ago

Please provide full log including print(f"Root: {root}") print(f"New file path: {new_file_path}")

srinivas muralidharan Over a year ago

The issue is resolved: It was about enabling LongPath in my windows through regedit

Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

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