The document describes a Python script for managing a file system using Firebase, detailing commands for creating files and listing directories. There are reported errors related to index range and missing attributes when executing certain commands. The implementation requires modifications to properly handle file creation and listing functionality, especially dealing with existing files and directory contents.

1. Code error where list index is out of range when doing command like "python3 edfs.py -create
/user/file" Trying to follow instruction of python edfs.py -create which will create a file in the
specified path. Note the file is empty and your implementation only needs to add the file name to
your emulated file system. No need to add data for the file. The command should report an error
if the file already exists. Also command "python3 edfs.py -ls /" should list all files under
directory but is unable to due to some error that list object has no attribute keys.
Code transcript below, indents not here:
import sys
import json
import requests
import base64
# Firebase URL
firebase_url = "YOUR_FIREBASE_URL"
# Function to get the data from Firebase
def get_firebase_data(url):
response = requests.get(url)
data = json.loads(response.text)
return data
# Function to list all files and directories under a given directory
def list_directory(dir_path):
data = get_firebase_data(firebase_url + dir_path + ".json")
if data is not None:
for key in data.keys():
if key == "content":
print(dir_path + ": " + data[key])
else:

2. list_directory(dir_path + "/" + key)
# Function to create a new file with the given content
def create_file(file_path, content):
data = {"content": content}
response = requests.put(firebase_url + file_path + ".json", data=json.dumps(data))
# Function to create a new directory
def create_directory(dir_path):
data = {}
response = requests.put(firebase_url + dir_path + ".json", data=json.dumps(data))
# Function to remove a file or directory
def remove(path):
response = requests.delete(firebase_url + path + ".json")
# Function to export the file system structure in XML format
def export_xml():
root_data = get_firebase_data(firebase_url + ".json")
print("<root>")
for key in root_data.keys():
print("<" + key + ">")
export_directory(key)
print("</" + key + ">")
print("</root>")
# Function to export a directory and its contents in XML format
def export_directory(dir_path):

3. data = get_firebase_data(firebase_url + dir_path + ".json")
if data is not None:
for key in data.keys():
if key == "content":
content = data[key]
print("<file name='" + dir_path + "'>" + base64.b64encode(content.encode('utf-8')).decode('utf-
8') + "</file>")
else:
print("<directory name='" + key + "'>")
export_directory(dir_path + "/" + key)
print("</directory>")
# Parse the command-line arguments
args = sys.argv
command = args[1]
path = args[2]
# Execute the appropriate command
if command == "-ls":
list_directory(path)
elif command == "-create":
content = args[3]
create_file(path, content)
elif command == "-mkdir":
create_directory(path)
elif command == "-rmdir" or command == "-rm":

4. remove(path)
elif command == "-export":
export_xml()