Python Dict Dots

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A way access values in nested key-value dicts using dot notation, e.g.

Before:

data = None
if needle in haystack:
    if nested_needle in haystack[needle]:
        data = haystack[needle][nested_needle]

if not data:
    data = default_data

After:

from dictdots import DictDots

data = DictDots.get(
    "needle.nested_needle", haystack, default=default_data
)

How to

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• Run pip install DictDots
• from dictdots import DictDots
• DictDots.get("needle", haystack_dict, default=default_value)

DictDots supports List and Dict.

For example

from dictdots import DictDots
haystack = [
    {
        "needle": {
            "nested": "you found me",
        },
    },
]

value = DictDots.get(haystack, "0.needle.nested")

print(value)

Would output you found me.

A valid query string is a string of keys and/or indicies, separated by periods. Strings can only contain alphanumeric characters, periods, and underscores. Strings can not contain double-or-more dots. Strings can not begin or end with a dot. Each period in the string will tell DictDots to dig another layer into your nested data structure. Dict dots does not hold your hand, if you give it a bad string, e.g _hello...world, then it will just raise an InvalidQueryString.

Future

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Query Language wishlist