1. The difference between
()It is a string that serializes Python objects into JSON format. If you want to write JSON data to a file, you can()The generated string is written to the file, or more directly()function, it will serialize Python objects to the file directly.
The following are two methods, one is to use()Then write the file, the second is to use()Write directly to the file.
2. Use () and then write to the file
import json
data = {"name": "Alice", "age": 30, "is_student": False}
# Serialize to JSON stringjson_str = (data, indent=4)
# Write a JSON string to a filewith open('', 'w', encoding='utf-8') as file:
(json_str)
3. Use () to write directly to the file
import json
data = {"name": "Alice", "age": 30, "is_student": False}
# Write JSON data directly to a filewith open('', 'w', encoding='utf-8') as file:
(data, file, indent=4)
4. () Parameters
fp: File object, indicating the file to be written.-
indent: Specify the indentation level to make the result more readable. IfNone, then compact output; if it is an integer, it represents the number of spaces indented per layer; if it is a string, it is used for indentation per layer. -
ensure_ascii: IfTrue, all non-ASCII characters will be escaped as\uXXXXForm. The default value isTrue。 -
sort_keys: Boolean value, indicating whether the dictionary keys are sorted alphabetically. -
separators: Tuple, specifying the item separator and key-value separator.
import json
data = {"name": "Alice", "age": 30, "languages": ["English", "French"], "is_student": False}
with open('', 'w', encoding='utf-8') as file:
(data, file, indent=4, ensure_ascii=False, sort_keys=True)
The parameters of () can be seen in the blog's parameters
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