Python-用户输入目录中的特定文件夹，然后打印目录的所有内容

Question

Scripts is supposed to accept user input and print out all contents of a folder in a specific format. Example: Folder1(main folder)-->Folder2-->Folder3-->Folder4.

Directory contains mnemonics(Folder1) with format mnemonic:contents

Contents may contain subfolders.

What I have here is throwing this error: Valueerror too many values to unpack (expected 2, got 1)

in this line: " for single_mnemonic, contents in os.listdir(startpath): "

def search_specific_mnemonic(startpath):
user_entered_mnemonic = input("Enter Client Mnemonic: ")
facility_types = ["clinic", "hospital", "lab", "hub_millennium", "client_millennium"]

for single_mnemonic, contents in os.listdir(startpath):

    CRED = "\033[91m"
    CEND = "\033[0m"
    print(CRED + "\n",user_entered_mnemonic + CEND)

    for facility_type in facility_types:
        if contents[facility_type]:
            box_display_char = "X"
        else:
            box_display_char = "_"

        print("  [{0}] - {1}".format(box_display_char, facility_type.replace("_", " ").title()))
        if contents[facility_type]:
            for practice_name in sorted(contents[facility_type]):
                print("     {}".format(practice_name))
                for practice_scripts in sorted(contents[facility_type]):
                    print("         {}".format(contents[facility_type][practice_name]))
                    break

Answer 1

If you are certain all file names in your folder are of the same format
(ie mnemonic:content)
You could try:
for single_mnemonic, contents in [format_name.split(':') for format_name in os.listdir(startpath):

This will return an array, where's every item is a an array of the two sides of the formatted name: [[mnemonic, content], [mnemonic, content]]