英文:
How can I add an item in a list from a JSON file in Python?
问题
import jsonwith open("example.json", "r") as jsonFile:data = json.load(jsonFile)data["language"].append('Spanish') # Append 'Spanish' to the 'language' listwith open("example.json", "w") as jsonFile:json.dump(data, jsonFile)
英文:
I'm working with a JSON file and I was wondering if there's a way to append a string to a list within the file. Here's an example of the JSON file I'm working with:
{"language": "['English', 'French']", "bank": 50}
I want to add the string "Spanish" to the "language" list. How can I do this?
Here's the code I've written so far, but I'm not sure how to modify it to achieve what I want:
import jsonwith open("example.json", "r") as jsonFile:data = json.load(jsonFile)add list(data["language"]['Spanish'])with open("example.json", "w") as jsonFile:json.dump(data, jsonFile)
How can I modify this code to achieve my goal?
答案1
得分: 2
{ "language": ["English", "French"], "bank": 50 }
import jsonwith open("temp.json", "r") as f:data = json.load(f)data["language"].append("Spanish")with open("temp.json", "w") as f:json.dump(data, f)
英文:
> {"language": "['English', 'French']", "bank": 50}
Here the "language" keys hold a string rather than a list because of the " before [ and " after ]. To solve this, change the file to this:
{"language": ["English", "French"], "bank": 50}
Then use this code to append "Spanish" or any language from now on:
import jsonwith open("temp.json", "r") as f:data = json.load(f)data["language"].append("Spanish")with open("temp.json", "w") as f:json.dump(data, f)
答案2
得分: 1
import jsonimport astwith open("example.json", "r") as jsonFile:data = json.load(jsonFile)#data={"language": "['English', 'French']", "bank": 50}#take a variable ee=ast.literal_eval(data['language'])e.append('Spanish')data['language']=eprint(data)#{'language': ['English', 'French', 'Spanish'], 'bank': 50}
英文:
import jsonimport astwith open("example.json", "r") as jsonFile:data = json.load(jsonFile)#data={"language": "['English', 'French']", "bank": 50}#take a variable ee=ast.literal_eval(data['language'])e.append('Spanish')data['language']=eprint(data)#{'language': ['English', 'French', 'Spanish'], 'bank': 50}
答案3
得分: 0
要向Python列表中添加元素，你应该使用append()方法。
示例：
import astast.literal_eval(data["language"]).append("Spanish")
英文:
In order to add to a Python list you should use the append() method.
Example:
import astast.literal_eval(data["language"]).append("Spanish")
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