A Python library for parsing and loading Compose files
Project description
compose-py
A Python library for parsing and loading Compose files
Installation
pip install compose-py
By default, the library doesn't have any dependencies for dataclass libraries.
Choose 'pydantic' or 'dataclasses' and install the library.
We also provide extras
for the libraries:
# If you prefer Pydantic models
pip install "compose-py[pydantic]"
# If you prefer dataclasses models
pip install "compose-py[dataclasses]"
Tutorial: Load, modify, and save docker-compose.yml
Pydantic.BaseModel (default)
import compose_py
with open("docker-compose.yml", "r") as f:
obj = compose_py.load_yaml(f)
print(obj) # Prints 'compose_py.models_pydantic.ComposeSpecification(...)'
print(obj.services["web"]) # Prints 'compose_py.models_pydantic.Service(...)'
# Copy and modify the existing service, then add it to the specification
web2 = obj.services["web"].copy()
web2.command = "--port 8081"
obj.services["web2"] = web2
print(compose_py.dump_yaml_str(obj))
with open("docker-compose-modified.yml", "w") as f:
compose_py.dump_yaml(obj, f)
You can find more APIs under compose_py.models_pydantic
package.
dataclasses.dataclass
import compose_py
with open("docker-compose.yml", "r") as f:
obj = compose_py.load_yaml(f, model=compose_py.ModelType.DATACLASSES)
print(obj) # Prints 'compose_py.models_dataclasses.ComposeSpecification(...)'
print(obj.services["web"]) # Prints 'compose_py.models_dataclasses.Service(...)'
# Copy and modify the existing service, then add it to the specification
web2 = obj.services["web"].copy()
web2.command = "--port 8081"
obj.services["web2"] = web2
print(compose_py.dump_yaml_str(obj))
with open("docker-compose-modified.yml", "w") as f:
compose_py.dump_yaml(obj, f, model=compose_py.ModelType.DATACLASSES)
You can find more APIs under compose_py.models_dataclasses
package.
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