How to Retrieve String Objects from JSON in Python 2?

Retrieving String Objects from JSON in Python 2

When parsing JSON in Python 2 from ASCII-encoded text files, string values are automatically cast to Unicode objects. This can pose an issue when interfacing with libraries that exclusively accept string objects.

While updating to Python 3 or using a conversion function are viable solutions, another option is to leverage PyYAML. PyYAML offers a more direct approach by returning string objects as keys and values for JSON files:

<code class="python">import yaml

list_org = ['a', 'b']
list_dump = json.dumps(list_org)
json_result = json.loads(list_dump)
yaml_result = yaml.safe_load(list_dump)

print(json_result, type(json_result))  # [u'a', u'b'], <type 'list'>
print(yaml_result, type(yaml_result))  # ['a', 'b'], <type 'list'></code>

Note that PyYAML's load function must be replaced with safe_load to ensure compatibility with JSON. Additionally, while ASCII-encoded entries result in string objects, using Unicode-encoded entries will still yield Unicode objects.

If converting string objects to Unicode objects is necessary, the conversion function by Mark Amery can be used:

<code class="python">from mark_amery import unicode_to_str

json_list = json.loads(json_list)
str_list = unicode_to_str(unicode_list)</code>

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