envier_config_class_env_vars_type_hints_defaults.py

1from envier import Envier
2
3
4class MyConfig(Envier):
5    # This will look for an environment variable named MYAPP_HOST
6    # and default to "localhost" if not found.
7    host = Envier.v(str, "MYAPP_HOST", default="localhost")
8    
9    # This will look for MYAPP_PORT, and cast it to an integer.
10    port = Envier.v(int, "MYAPP_PORT", default=8080)
11
12    # You can also nest configurations
13    class SubConfig(Envier):
14        item = Envier.v(str, "MYAPP_SUB_ITEM", default="default-item")
15
16    sub = SubConfig
17
18
19# Usage
20config = MyConfig()
21print(f"Connecting to {config.host}:{config.port}")
22print(f"Sub-item: {config.sub.item}")