使用 filecmp.cmp(file1, file2) 将文件与文件列表进行比较

Question

我有一个带有三个参数的 function

• list_to_copy：我要复制的文件列表。
• list_to_avoid：我不想复制的列表，可能存在于 list_to_copy 中
• 目标是文件所在的路径。

    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)

我的主要问题是我不知道如何使用filecmp.cmp(file1, file2)将copied_file与list_to_avoid中的所有文件进行比较

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注意按文件名（字符串）检查对我来说效率不高。

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)