在Python中保存json文件时如何定义文件夹名称？

Question

How to define folder name when saving JSON file? I tried to add myfoldername inside open() , but did not work. Also tried to myfoldername/myfilename in filename definition

Error:

TypeError: an integer is required (got type str)

Code:

import json

# Testing file save
dictionary_data = {"a": 1, "b": 2}

filename = "myfilename" +  time.strftime("%Y%m%d-%H%M%S") + ".json"
a_file = open("myfoldername",filename, "w")
json.dump(dictionary_data, a_file)
a_file.close()

Answer 1

This should do the trick.

• Use pathlib to manage paths
• Create the parent dir if not exist with mkdir
• Open the file thanks to the with statement

import json
import time
from pathlib import Path

# Testing file save
dictionary_data = {"a": 1, "b": 2}

filename = Path("myfilename") / Path(f"{time.strftime('%Y%m%d-%H%M%S')}.json")
# create the parent dir if not exist
filename.parent.mkdir(parents=True, exist_ok=True)

with open(filename, "w") as a_file:
    json.dump(dictionary_data, a_file)