how to rename json file using python-CodePudding

I would like to save json file as a new one with updated name, like the original file name is

update.json

what I want is

{newid_} update.json
#example:123_update.json

with open("./update.json", "r") as jsonFile:
    data = json.load(jsonFile)

data["Id"] = "newid"

with open("./update.json", "w") as jsonFile:
    json.dump(data, jsonFile)

Many thanks

CodePudding user response：

Something like this should do the work:

data["Id"] = "newid"
newname = "./" data["Id"] "_update.json"

with open(newname, "w") as jsonFile:
    json.dump(data, jsonFile)

CodePudding user response：

You can pass the value of the new ID in the file name using format string.

newId = 'Your ID here'
with open(f"./{newId}_update.json", "w") as jsonFile:
    json.dump(data, jsonFile)

CodePudding user response：

Right now you are saving the new file under update.json.json. In the open function, is where you can choose where to write your new file. So in your case, it could be something like

# Use a f-string to insert the new id into the file name
new_file_path = f"./{data['Id']}_update.json"
with open(new_file_path, "w") as jsonFile:
    json.dump(data, jsonFile)

Note that this will not delete the previous file. If you wish to overwrite the previous file, then you can do something like:

import os
file_path = "update.json"
new_file_path = f"./{data['Id']}_update.json"

# Overwrite the content of the old file
with open(file_path, "w") as jsonFile:
    json.dump(data, jsonFile)

# Rename it
os.rename(file_path, new_file_path)