bauplan package¶

Submodules¶

Module contents¶

Bases: _OperationContainer

A consistent interface to access Bauplan operations.

Using the client

import bauplan
client = bauplan.Client()

# query the table and return result set as an arrow Table
my_table = client.query('SELECT sum(trips) trips FROM travel_table', branch_name='main')

# efficiently cast the table to a pandas DataFrame
df = my_table.to_pandas()

Notes on authentication

# by default, authenticate from BAUPLAN_API_KEY >> BAUPLAN_PROFILE >> ~/.bauplan/config.yml
client = bauplan.Client()
# client used ~/.bauplan/config.yml profile 'default'

os.environ['BAUPLAN_PROFILE'] = "someprofile"
client = bauplan.Client()
# >> client now uses profile 'someprofile'

os.environ['BAUPLAN_API_KEY'] = "mykey"
client = bauplan.Client()
# >> client now authenticates with api_key value "mykey", because api key > profile

# specify authentication directly - this supercedes BAUPLAN_API_KEY in the environment
client = bauplan.Client(api_key='MY_KEY')

# specify a profile from ~/.bauplan/config.yml - this supercedes BAUPLAN_PROFILE in the environment
client = bauplan.Client(profile='default')

Handling Exceptions

Catalog operations (branch/table methods) raise a subclass of bauplan.exceptions.BauplanError that mirror HTTP status codes.

400: InvalidDataError

401: UnauthorizedError

403: AccessDeniedError

404: ResourceNotFoundError e.g .ID doesn’t match any records

404: ApiRouteError e.g. the given route doesn’t exist

405: ApiMethodError e.g. POST on a route with only GET defined

409: UpdateConflictError e.g. creating a record with a name that already exists

429: TooManyRequestsError

Run/Query/Scan/Import operations raise a subclass of bauplan.exceptions.BauplanError that represents, and also return a RunState object containing details and logs:

JobError e.g. something went wrong in a run/query/import/scan; includes error details

Run/import operations also return a state object that includes a job_status and other details. There are two ways to check status for run/import operations:

try/except the JobError exception

check the state.job_status attribute

Examples:

try:
    state = client.run(...)
    state = client.query(...)
    state = client.scan(...)
    state = client.plan_table_creation(...)
except bauplan.exceptions.JobError as e:
    ...

state = client.run(...)
if state.job_status != "success":
    ...

Parameters:¶

profile: str | None = None¶: (optional) The Bauplan config profile name to use to determine api_key.
api_key: str | None = None¶: (optional) Your unique Bauplan API key; mutually exclusive with profile. If not provided, fetch precedence is 1) environment BAUPLAN_API_KEY 2) .bauplan/config.yml
branch: str | None = None¶: (optional) The default branch to use for queries and runs. If not provided active_branch from the profile is used.
namespace: str | None = None¶: (optional) The default namespace to use for queries and runs.
cache: 'on' | 'off' | None = None¶: (optional) Whether to enable or disable caching for all the requests.
debug: bool | None = None¶: (optional) Whether to enable or disable debug mode for all the requests.
verbose: bool | None = None¶: (optional) Whether to enable or disable verbose mode for all the requests.
args: dict[str, str] | None = None¶: (optional) Additional arguments to pass to all the requests.
api_endpoint: str | None = None¶: (optional) The Bauplan API endpoint to use. If not provided, fetch precedence is 1) environment BAUPLAN_API_ENDPOINT 2) .bauplan/config.yml
catalog_endpoint: str | None = None¶: (optional) The Bauplan catalog endpoint to use. If not provided, fetch precedence is 1) environment BAUPLAN_CATALOG_ENDPOINT 2) .bauplan/config.yml
client_timeout: int | None = None¶: (optional) The client timeout in seconds for all the requests.
env: str | None = None¶: (optional) The environment to use for all the requests. Default: ‘prod’.
config_file_path: str | Path | None = None¶: (optional) The path to the Bauplan config file to use. If not provided, fetch precedence is 1) environment BAUPLAN_CONFIG_PATH 2) ~/.bauplan/config.yml
user_session_token: str | None = None¶: (optional) Your unique Bauplan user session token.

Apply a plan for creating a table. It is done automaticaly during th table plan creation if no schema conflicts exist. Otherwise, if schema conflicts exist, then this function is used to apply them after the schema conflicts are resolved. Most common schema conflict is a two parquet files with the same column name but different datatype

Parameters:¶

plan: dict | TableCreatePlanState¶: The plan to apply.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: dict of arbitrary args to pass to the backend.
verbose: bool | None = None¶: Whether to enable or disable verbose mode.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Raises:¶

TableCreatePlanApplyStatusError – if the table creation plan apply fails.

:return The plan state.

create_branch(branch: str | Branch, from_ref: str | Branch | Ref) → Branch¶

Create a new branch at a given ref.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.create_branch(
    branch='my_branch_name',
    from_ref='my_ref_or_branch_name',
)

Parameters:¶

branch: str | Branch¶: The name of the new branch.
from_ref: str | Branch | Ref¶: The name of the base branch; either a branch like “main” or ref like “main@[sha]”.

Returns:¶

The created branch object.

create_namespace(namespace: str | Namespace, branch: str | Branch) → Namespace¶

Create a new namespace at a given branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.create_namespace(
    namespace='my_namespace_name'
    branch='my_branch_name',
)

Parameters:¶

namespace: str | Namespace¶: The name of the namespace.
branch: str | Branch¶: The name of the branch to create the namespace on.

Returns:¶

The created namespace.

Create a table from an S3 location.

This operation will attempt to create a table based of schemas of N parquet files found by a given search uri.

import bauplan
client = bauplan.Client()

plan_state = client.create_table(
    table='my_table_name',
    search_uri='s3://path/to/my/files/*.parquet',
    ref='my_ref_or_branch_name',
)
if plan_state.error:
    plan_error_action(...)
success_action(plan_state.plan)

Parameters:¶

table: str | Table¶: The table which will be created.
search_uri: str¶: The location of the files to scan for schema.
branch: str | Branch | None = None¶: The branch name in which to create the table in.
namespace: str | Namespace | None = None¶: Optional argument specifying the namespace. If not. specified, it will be inferred based on table location or the default. namespace.
partitioned_by: str | None = None¶: Optional argument specifying the table partitioning.
replace: bool | None = None¶: Replace the table if it already exists.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: dict of arbitrary args to pass to the backend.
verbose: bool | None = None¶: Whether to enable or disable verbose mode.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Raises:¶

TableCreatePlanStatusError – if the table creation plan fails.
TableCreatePlanApplyStatusError – if the table creation plan apply fails.

Returns:¶

The plan state.

delete_branch(branch: str | Branch) → bool¶

Delete a branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.delete_branch('my_branch_name')

Parameters:¶

branch: str | Branch¶: The name of the branch to delete.

Returns:¶

A boolean for if the branch was deleted.

delete_namespace(namespace: str | Namespace, branch: str | Branch) → bool¶

Delete a namespace.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.delete_namespace(
    namespace='my_namespace_name',
    branch='my_branch_name',
)

Parameters:¶

namespace: str | Namespace¶: The name of the namespace to delete.
form_branch: The name of the branch to delete the namespace from.

Returns:¶

A boolean for if the namespace was deleted.

delete_table(table: str | Table, branch: str | Branch) → bool¶

Drop a table.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.delete_table(
    table='my_table_name',
    branch='my_branch_name',
)

Parameters:¶

table: str | Table¶: The table to delete.
branch: str | Branch¶: The branch on which the table is stored.

Returns:¶

A boolean for if the table was deleted.

get_branch(branch: str | Branch) → Branch¶

Get the branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

# retrieve only the tables as tuples of (name, kind)
branch = client.get_branch('my_branch_name')
print(branch.hash)

Parameters:¶

branch: str | Branch¶: The name of the branch to retrieve.

Returns:¶

A Branch object.

get_branches(name: str | None = None, user: str | None = None, limit: int | None = None, itersize: int | None = None) → Generator[Branch, None, None]¶

Get the available data branches in the Bauplan catalog.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

for branch in client.get_branches():
    print(branch.name, branch.hash)

Parameters:¶

name: str | None = None¶: Filter the branches by name.
user: str | None = None¶: Filter the branches by user.
itersize: int | None = None¶: int 1-500.
limit: int | None = None¶: int > 0.

Yield:¶

A Branch object.

get_namespace(namespace: str | Namespace, ref: str | Branch | Ref) → Namespace¶

Get a namespace.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

namespace =  client.get_namespace(
    namespace='my_namespace_name',
    ref='my_ref_or_branch_name',
)

Parameters:¶

namespace: str | Namespace¶: The name of the namespace to get.
ref: str | Branch | Ref¶: The ref or branch to check the namespace on.

Returns:¶

A Namespace object.

Get the available data namespaces in the Bauplan catalog branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

for namespace in client.get_namespaces('my_namespace_name'):
    print(namespace.name)

Parameters:¶

ref: str | Branch | Ref¶: The ref or branch to retrieve the namespaces from.
filter_by_name: str | None = None¶: Filter the namespaces by name.
itersize: int | None = None¶: int 1-500.
limit: int | None = None¶: int > 0.

Yield:¶

A Namespace object.

get_table(table: str | Table, ref: str | Ref | Branch, include_raw: bool = False) → TableWithMetadata¶

Get the table data and metadata for a table in the target branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

# get the fields and metadata for a table
table = client.get_table(
    table='my_table_name',
    ref='my_ref_or_branch_name',
)

# loop through the fields and print their name, required, and type
for c in table.fields:
    print(c.name, c.required, c.type)

# show the number of records in the table
print(table.records)

Parameters:¶

ref: str | Ref | Branch¶: The ref or branch to get the table from.
table: str | Table¶: The table to retrieve.
include_raw: bool = False¶: Whether or not to include the raw metadata.json object as a nested dict.

Returns:¶

a TableWithMetadata object, optionally including the raw metadata.json object.

Get the tables and views in the target branch.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

# retrieve only the tables as tuples of (name, kind)
for table in client.get_tables('my_ref_or_branch_name'):
    print(table.name, table.kind)

Parameters:¶

ref: str | Branch | Ref¶: The ref or branch to get the tables from.
namespace: str | Namespace | None = None¶: The namespace to get the tables from.
limit: int | None = None¶: int > 0.
itersize: int | None = None¶: int 1-500.

Yield:¶

A Table object.

has_branch(branch: str | Branch) → bool¶

Check if a branch exists.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.has_branch('my_branch_name')

Parameters:¶

branch: str | Branch¶: The name of the branch to check.

Returns:¶

A boolean for if the branch exists.

has_namespace(namespace: str | Namespace, ref: str | Branch | Ref) → bool¶

Check if a namespace exists.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.has_namespace(
    namespace='my_namespace_name',
    ref='my_ref_or_branch_name',
)

Parameters:¶

namespace: str | Namespace¶: The name of the namespace to check.
ref: str | Branch | Ref¶: The ref or branch to check the namespace on.

Returns:¶

A boolean for if the namespace exists.

has_table(table: str | Table, ref: str | Ref | Branch) → bool¶

Check if a table exists.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert client.has_table(
    table='my_table_name',
    ref='my_ref_or_branch_name',
)

Parameters:¶

ref: str | Ref | Branch¶: The ref or branch to get the table from.
table: str | Table¶: The table to retrieve.

Returns:¶

A boolean for if the table exists.

Imports data into an already existing table.

import bauplan
client = bauplan.Client()

plan_state = client.import_data(
    table='my_table_name',
    search_uri='s3://path/to/my/files/*.parquet',
    branch='my_branch_name',
)
if plan_state.error:
    plan_error_action(...)
success_action(plan_state.plan)

Parameters:¶

table: str | Table¶: Previously created table in into which data will be imported.
search_uri: str¶: Uri which to scan for files to import.
branch: str | Branch | None = None¶: Branch in which to import the table.
namespace: str | Namespace | None = None¶: Namespace of the table. If not specified, namespace will be infered from table name or default settings.
continue_on_error: bool = False¶: Do not fail the import even if 1 data import fails.
import_duplicate_files: bool = False¶: Ignore prevention of importing s3 files that were already imported.
best_effort: bool = False¶: Don’t fail if schema of table does not match.
transformation_query: Optional duckdb compliant query applied on each parquet file. Use original_table as the table in the query.
preview: 'on' | 'off' | 'head' | 'tail' | str | None = None¶: Whether to enable or disable preview mode for the import.
debug: bool | None = None¶: Whether to enable or disable debug mode for the import.
args: dict[str, str] | None = None¶: dict of arbitrary args to pass to the backend.
verbose: bool | None = None¶: Whether to enable or disable verbose mode.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The plan state.

merge_branch(source_ref: str | Branch | Ref, into_branch: str | Branch) → bool¶

Merge one branch into another.

Upon failure, raises bauplan.exceptions.BauplanError

import bauplan
client = bauplan.Client()

assert merge_branch(
    source_ref='my_ref_or_branch_name',
    into_branch='main',
)

Parameters:¶

source_ref: str | Branch | Ref¶: The name of the merge source; either a branch like “main” or ref like “main@[sha]”.
into_branch: str | Branch¶: The name of the merge target.

Returns:¶

a boolean for whether the merge worked.

Create a table import plan from an S3 location.

This operation will attempt to create a table based of schemas of N parquet files found by a given search uri. A YAML file containing the schema and plan is returns and if there are no conflicts, it is automatically applied.

import bauplan
client = bauplan.Client()

plan_state = client.plan_table_creation(
    table='my_table_name',
    search_uri='s3://path/to/my/files/*.parquet',
    ref='my_ref_or_branch_name',
)
if plan_state.error:
    plan_error_action(...)
success_action(plan_state.plan)

Parameters:¶

table: str | Table¶: The table which will be created.
search_uri: str¶: The location of the files to scan for schema.
branch: str | Branch | None = None¶: The branch name in which to create the table in.
namespace: str | Namespace | None = None¶: Optional argument specifying the namespace. If not. specified, it will be inferred based on table location or the default. namespace.
partitioned_by: str | None = None¶: Optional argument specifying the table partitioning.
replace: bool | None = None¶: Replace the table if it already exists.
debug: bool | None = None¶: Whether to enable or disable debug mode.
args: dict[str, str] | None = None¶: dict of arbitrary args to pass to the backend.
verbose: bool | None = None¶: Whether to enable or disable verbose mode.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Raises:¶

TableCreatePlanStatusError – if the table creation plan fails.

Returns:¶

The plan state.

Execute a SQL query and return the results as a pyarrow.Table. Note that this function uses Arrow also internally, resulting in a fast data transfer.

If you prefer to return the results as a pandas DataFrame, use the to_pandas function of pyarrow.Table.

import bauplan

client = bauplan.Client()

# query the table and return result set as an arrow Table
my_table = client.query(
    query='SELECT c1 FROM my_table',
    ref='my_ref_or_branch_name',
)

# efficiently cast the table to a pandas DataFrame
df = my_table.to_pandas()

Parameters:¶

query: str¶: The Bauplan query to execute.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
max_rows: int | None = None¶: The maximum number of rows to return; default: None (no limit).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the query in. If not set, the query will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: Additional arguments to pass to the query (default: None).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the query.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The query results as a pyarrow.Table.

Export the results of a SQL query to a file in CSV format.

import bauplan
client = bauplan.Client()

# query the table and iterate through the results one row at a time
client.query_to_csv_file(
    path='./my.csv',
    query='SELECT c1 FROM my_table',
    ref='my_ref_or_branch_name',
):

Parameters:¶

path: str | Path¶: The name or path of the file csv to write the results to.
query: str¶: The Bauplan query to execute.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
max_rows: int | None = None¶: The maximum number of rows to return; default: None (no limit).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the query in. If not set, the query will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: Additional arguments to pass to the query (default: None).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the query.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The path of the file written.

Execute a SQL query and return the results as a generator, where each row is a Python dictionary.

import bauplan
client = bauplan.Client()

# query the table and iterate through the results one row at a time
res = client.query_to_generator(
    query='SELECT c1 FROM my_table',
    ref='my_ref_or_branch_name',
)
for row in res:
    # do logic

Parameters:¶

query: str¶: The Bauplan query to execute.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
max_rows: int | None = None¶: The maximum number of rows to return; default: None (no limit).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the query in. If not set, the query will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
as_json: bool | None = False¶: Whether to return the results as a JSON-compatible string (default: False).
args: dict[str, str] | None = None¶: Additional arguments to pass to the query (default: None).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the query.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Yield:¶

A dictionary representing a row of query results.

Export the results of a SQL query to a file in JSON format.

import bauplan
client = bauplan.Client()

# query the table and iterate through the results one row at a time
client.query_to_json_file(
    path='./my.json',
    query='SELECT c1 FROM my_table',
    ref='my_ref_or_branch_name',
):

Parameters:¶

path: str | Path¶: The name or path of the file json to write the results to.
query: str¶: The Bauplan query to execute.
file_format: 'json' | 'jsonl' | None = 'json'¶: The format to write the results in; default: json. Allowed values are ‘json’ and ‘jsonl’.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
max_rows: int | None = None¶: The maximum number of rows to return; default: None (no limit).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the query in. If not set, the query will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: Additional arguments to pass to the query (default: None).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the query.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The path of the file written.

Export the results of a SQL query to a file in Parquet format.

import bauplan
client = bauplan.Client()

# query the table and iterate through the results one row at a time
client.query_to_parquet_file(
    path='./my.parquet',
    query='SELECT c1 FROM my_table',
    ref='my_ref_or_branch_name',
):

Parameters:¶

path: str | Path¶: The name or path of the file parquet to write the results to.
query: str¶: The Bauplan query to execute.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
max_rows: int | None = None¶: The maximum number of rows to return; default: None (no limit).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the query in. If not set, the query will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: Additional arguments to pass to the query (default: None).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the query.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The path of the file written.

Re run a Bauplan project by its ID and return the state of the run. This is the equivalent of running through the CLI the bauplan rerun command.

Parameters:¶

job_id: str¶: The Job ID of the previous run. This can be used to re-run a previous run, e.g., on a different branch.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read.
namespace: str | Namespace | None = None¶: The Namespace to run the job in. If not set, the job will be run in the default namespace.
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the run.
transaction: 'on' | 'off' | None = None¶: Whether to enable or disable transaction mode for the run.
dry_run: bool | None = None¶: Whether to enable or disable dry-run mode for the run; models are not materialized.
strict: 'on' | 'off' | None = None¶: Whether to enable or disable strict schema validation.
preview: 'on' | 'off' | 'head' | 'tail' | str | None = None¶: Whether to enable or disable preview mode for the run.
debug: bool | None = None¶: Whether to enable or disable debug mode for the run.
args: dict[str, str] | None = None¶: Additional arguments (optional).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the run.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The state of the run.

Run a Bauplan project and return the state of the run. This is the equivalent of running through the CLI the bauplan run command.

Parameters:¶

project_dir: str | None = None¶: The directory of the project (where the bauplan_project.yml file is located).
ref: str | Branch | Ref | None = None¶: The ref or branch name to read.
namespace: str | Namespace | None = None¶: The Namespace to run the job in. If not set, the job will be run in the default namespace.
parameters: dict[str, str | int | float | bool] | None = None¶: Parameters for templating into SQL or Python models.
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the run.
transaction: 'on' | 'off' | None = None¶: Whether to enable or disable transaction mode for the run.
dry_run: bool | None = None¶: Whether to enable or disable dry-run mode for the run; models are not materialized.
strict: 'on' | 'off' | None = None¶: Whether to enable or disable strict schema validation.
preview: 'on' | 'off' | 'head' | 'tail' | str | None = None¶: Whether to enable or disable preview mode for the run.
debug: bool | None = None¶: Whether to enable or disable debug mode for the run.
args: dict[str, str] | None = None¶: Additional arguments (optional).
verbose: bool | None = None¶: Whether to enable or disable verbose mode for the run.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The state of the run.

Execute a table scan (with optional filters) and return the results as an arrow Table.

Note that this function uses SQLGlot to compose a safe SQL query, and then internally defer to the query_to_arrow function for the actual scan.

import bauplan
client = bauplan.Client()

# run a table scan over the data lake
# filters are passed as a string
my_table = client.scan(
    table='my_table_name',
    ref='my_ref_or_branch_name',
    columns=['c1'],
    filters='c2 > 10',
)

Parameters:¶

table: str | Table¶: The table to scan.
ref: str | Branch | Ref | None = None¶: The ref or branch name to read data from.
columns: list[str] | None = None¶: The columns to return (default: None).
filters: str | None = None¶: The filters to apply (default: None).
limit: int | None = None¶: The maximum number of rows to return (default: None).
cache: 'on' | 'off' | None = None¶: Whether to enable or disable caching for the query.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.
namespace: str | Namespace | None = None¶: The Namespace to run the scan in. If not set, the scan will be run in the default namespace for your account.
debug: bool | None = None¶: Whether to enable or disable debug mode for the query.
args: dict[str, str] | None = None¶: dict of arbitrary args to pass to the backend.
client_timeout: int | float | None = None¶: seconds to timeout; this also cancels the remote job execution.

Returns:¶

The scan results as a pyarrow.Table.

class bauplan.JobStatus(canceled: str = 'CANCELLED', cancelled: str = 'CANCELLED', failed: str = 'FAILED', rejected: str = 'REJECTED', success: str = 'SUCCESS', timeout: str = 'TIMEOUT', unknown: str = 'UNKNOWN')¶

Bases: object

canceled : str = 'CANCELLED'¶

cancelled : str = 'CANCELLED'¶

failed : str = 'FAILED'¶

rejected : str = 'REJECTED'¶

success : str = 'SUCCESS'¶

timeout : str = 'TIMEOUT'¶

unknown : str = 'UNKNOWN'¶

Bases: object

Represents a model (dataframe/table representing a DAG step) as an input to a function.

e.g.

@bauplan.model()
def some_parent_model():
    return pyarrow.Table.from_pydict({'bar': [1, 2, 3]})

@bauplan.model()
def your_cool_model(
    # parent models are passed as inputs, using bauplan.Model
    # class
    parent_0=bauplan.Model(
        'some_parent_model',
        columns=['bar'],
        filter='bar > 1',
    )
):
    # Can return a pandas dataframe or a pyarrow table
    return pyarrow.Table.from_pandas(
        pd.DataFrame({
            'foo': parent_0['bar'] * 2,
        })
    )

Bauplan can wrap other engines for the processing of some models, exposing a common interface and unified API for the user while dispatching the relevant operations to the underlying engine.

The authentication and authorization happens securely and transparently through ssm; the user is asked to specify a connector type and the credentials through the relevant keywords:

@bauplan.model()
def your_cool_model(
    parent_0=bauplan.Model(
        'some_parent_model',
        columns=['bar'],
        filter='bar > 1',
        connector='dremio',
        connector_config_key='bauplan',
    )
):
    # parent_0 inside the function body
    # will still be an Arrow table: the user code
    # should still be the same as the data is moved
    # transparently by Bauplan from an engine to the function.
    return pyarrow.Table.from_pandas(
        pd.DataFrame({
            'foo': parent_0['bar'] * 2,
        })
    )

Parameters:¶

name: str¶: The name of the model.
columns: list[str] | None = None¶: The list of columns in the model. If the arg is not provided, the model will load all columns.
filter: str | None = None¶: The optional filter for the model. Defaults to None.
ref: str | None = None¶: The optional reference to the model. Defaults to None.
connector: str | None = None¶: The connector type for the model (defaults to Bauplan SQL). Allowed values are ‘snowflake’ and ‘dremio’.
connector_config_key: str | None = None¶: The key name if the SSM key is custom with the pattern bauplan/connectors/<connector_type>/<key>.
connector_config_uri: str | None = None¶: Full SSM uri if completely custom path, e.g. ssm://us-west-2/123456789012/baubau/dremio.

class bauplan.Profile(name: 'Optional[str]' = None, api_key: 'Optional[str]' = None, user_session_token: 'Optional[str]' = None, project_dir: 'Optional[Union[str, Path]]' = None, branch: 'Optional[str]' = None, namespace: 'Optional[str]' = None, cache: "Optional[Literal['on', 'off']]" = None, debug: 'Optional[bool]' = None, verbose: 'Optional[bool]' = None, args: 'Optional[Dict[str, str]]' = None, api_endpoint: 'Optional[str]' = None, catalog_endpoint: 'Optional[str]' = None, client_timeout: 'Optional[int]' = None, env: 'Optional[str]' = None, config_file_path: 'Optional[Union[str, Path]]' = None, feature_flags: 'Optional[Dict[str, Any]]' = None)¶

Bases: object

api_endpoint : str¶

api_key : str | None¶

args : Dict[str, str] | None¶

branch : str | None¶

cache : str | None¶

catalog_endpoint : str¶

client_timeout : int | None¶

config_file_path : str | Path | None¶

debug : bool | None¶

env : str | None¶

feature_flags : Dict[str, str]¶

classmethod load_profile(profile: str | None = None, api_key: str | None = None, user_session_token: str | None = None, project_dir: str | Path | None = None, branch: str | None = None, namespace: str | None = None, cache: 'on' | 'off' | None = None, debug: bool | None = None, verbose: bool | None = None, args: dict[str, str] | None = None, api_endpoint: str | None = None, catalog_endpoint: str | None = None, client_timeout: int | None = None, env: str | None = None, config_file_path: str | Path | None = None, feature_flags: dict[str, Any] | None = None) → Profile¶: Load a profile from a profile file.

name : str | None¶

namespace : str | None¶

project_dir : str | Path | None¶

user_session_token : str | None¶

verbose : bool | None¶

bauplan.expectation(**kwargs: Any) → Callable¶

Decorator that defines a Bauplan expectation.

An expectation is a function from one (or more) dataframe-like object(s) to a boolean: it is commonly used to perform data validation and data quality checks when running a pipeline. Expectations takes as input the table(s) they are validating and return a boolean indicating whether the expectation is met or not. A Python expectation needs a Python environment to run, which is defined using the python decorator, e.g.:

@bauplan.expectation()
@bauplan.python('3.10')
def test_joined_dataset(
    data=bauplan.Model(
        'join_dataset',
        columns=['anomaly']
    )
):
    # your data validation code here
    return expect_column_no_nulls(data, 'anomaly')

Parameters:¶

f: The function to decorate.

Decorator that specifies a Bauplan model.

A model is a function from one (or more) dataframe-like object(s) to another dataframe-like object: it is used to define a transformation in a pipeline. Models are chained together implicitly by using them as inputs to their children. A Python model needs a Python environment to run, which is defined using the python decorator, e.g.:

@bauplan.model(
    columns=['*'],
    materialization_strategy='NONE'
)
@bauplan.python('3.11')
def source_scan(
    data=bauplan.Model(
        'iot_kaggle',
        columns=['*'],
        filter="motion='false'"
    )
):
    # your code here
    return data

Parameters:¶

name: str | None = None¶: the name of the model (e.g. ‘users’); if missing the function name is used.
columns: list[str] | None = None¶: the columns of the output dataframe after the model runs (e.g. [‘id’, ‘name’, ‘email’]). Use [‘*’] as a wildcard.
internet_access: bool | None = None¶: whether the model requires internet access.
partitioned_by: str | list[str] | tuple[str, ...] | None = None¶: the columns to partition the data by.
materialization_strategy: 'NONE' | 'REPLACE' | 'APPEND' | None = None¶: the materialization strategy to use.
cache_strategy: 'NONE' | 'DEFAULT' | None = None¶: the cache strategy to use.

bauplan.pyspark(version: str | None = None, conf: dict[str, str] | None = None, **kwargs: Any) → Callable¶

Decorator that makes a pyspark session available to a Bauplan function (a model or an expectation). Add a spark=None parameter to the function model args

Parameters:¶

version: str | None = None¶: the version string of pyspark
conf: dict[str, str] | None = None¶: A dict containing the pyspark config

bauplan.python(version: str | None = None, pip: dict[str, str] | None = None, **kwargs: Any) → Callable¶

Decorator that defines a Python environment for a Bauplan function (e.g. a model or expectation). It is used to specify directly in code the configuration of the Python environment required to run the function, i.e. the Python version and the Python packages required.

Parameters:¶

version: str | None = None¶: The python version for the interpreter (e.g. '3.11').
pip: dict[str, str] | None = None¶: A dictionary of dependencies (and versions) required by the function (e.g. {'requests': '2.26.0'}).

Decorator that defines the resources required by a Bauplan function (e.g. a model or expectation). It is used to specify directly in code the configuration of the resources required to run the function.

Parameters:¶

cpus: int | float | None = None¶: The number of CPUs required by the function (e.g: `0.5`)
memory: int | str | None = None¶: The amount of memory required by the function (e.g: `1G`, `1000`)
memory_swap: int | str | None = None¶: The amount of swap memory required by the function (e.g: `1G`, `1000`)
timeout: int | None = None¶: The maximum time the function is allowed to run (e.g: `60`)