使用 filecmp.cmp(file1, file2) 將文件與文件列表進行比較

Question

我有一個帶有三個參數的 function

• list_to_copy：我要復制的文件列表。
• list_to_avoid：我不想復制的列表，可能存在於 list_to_copy 中
• 目標是文件所在的路徑。

    def copy_files(self, list_to_copy, list_to_avoid, destination):
        # Copy a file from list to destination making sure file is not 
        # duplicated regarding the name.
        for copied_file in list_to_copy:
            for avoid_file in list_to_avoid:
                if not filecmp.cmp(copied_file, avoid_file):
                    shutil.copy(copied_file, destination)

我的主要問題是我不知道如何使用filecmp.cmp(file1, file2)將copied_file與list_to_avoid中的所有文件進行比較

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注意按文件名（字符串）檢查對我來說效率不高。

Answer 1

from filecmp import cmp
from shutil import copy
from os import scandir
def copy_files(list_to_copy,destination):
# Copy a file from list to destination making sure file is not duplicated regarding the content.
    for copied_file in list_to_copy:
        for avoid_file in scandir(destination):
            if cmp(copied_file,avoid_file):
                break
        else:
            copy(copied_file, destination)