例如当文件名是其它名称时，代码将不能正常工作。
例如，当文件名是carre123. csv时，它不能正确比较。但是当我将文件名改为test123. csv时，它工作正常。
这是密码

import os
import pandas as pd

# Set the directory where the CSV files are stored
directory = '/PATH/csv-files'

# Get a list of all the CSV files in the directory
csv_files = [os.path.join(directory, f) for f in os.listdir(directory) if f.endswith('.csv')]
#print(csv_files)

# Sort the CSV files by modification time and select the last file as the latest file
latest_file = sorted(csv_files, key=os.path.getmtime)[-1]
#print(latest_file)

# Read the contents of the latest CSV file into a pandas DataFrame
latest_data = pd.read_csv(latest_file)
#print(latest_data)

# Iterate over all the previous CSV files
for csv_file in csv_files[:-1]:
    # Read the contents of the previous CSV file into a pandas DataFrame
    prev_data = pd.read_csv(csv_file)
    #print(prev_data)

    # Identify the rows in the latest CSV file that match the rows in the previous CSV file
    matches = latest_data.isin(prev_data.to_dict('list')).all(axis=1)
    print(matches)

    # Remove the matching rows from the latest CSV file
    latest_data = latest_data[~matches]

# Write the remaining rows in the latest CSV file to a new file
latest_data.to_csv('/NEWPATH/diff.csv', index=False)

当文件名是carre123. csv时，它不能正确比较。但是当我将文件名改为test123. csv时，它工作正常。