SubConfig

Configuration management library with value substitution for python

Basic Usage

sample.json

{"Marco": "Polo"}

sample.py

from subconfig import SubConfig

sc = SubConfig(files=["sample.json"])

print(sc["Marco"])

Output:

Polo

Value Substitution

substitute.json

{
  "name": "Jane",
  "surname": "Doe",
  "full_name": "${name} ${surname}"
}

substitute.py

from subconfig import SubConfig

sc = SubConfig(files=["substitute.json"])

print(sc["full_name"])

Output:

Jane Doe

Nested value access

Structured configuration values can be addressed using dot notation

nested.json

{
  "books": [{"title":  "Little Red Riding Hood"}],
  "favorite_book": "${books.0.title}"
}

nested.py

from subconfig import SubConfig

sc = SubConfig(["nested.json"])

print(sc["books.0.title"])

# Dot notation works for value substitution as well
print(sc["favorite_book"])

Output:

Little Red Riding Hood
Little Red Riding Hood