Tinjau file berikut [sample_data.py], yang mewakili data sampel yang Anda masukkan ke dalamvehicle-registration tabel. File ini juga mengimpor dariamazon.ion paket untuk menyediakan fungsi pembantu yang mengonversi, mengurai, dan mencetak data Amazon Ion.
# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this
# software and associated documentation files [the "Software"], to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
from datetime import datetime
from decimal import Decimal
from logging import basicConfig, getLogger, INFO
from amazon.ion.simple_types import IonPyBool, IonPyBytes, IonPyDecimal, IonPyDict, IonPyFloat, IonPyInt, IonPyList, \
IonPyNull, IonPySymbol, IonPyText, IonPyTimestamp
from amazon.ion.simpleion import dumps, loads
logger = getLogger[__name__]
basicConfig[level=INFO]
IonValue = [IonPyBool, IonPyBytes, IonPyDecimal, IonPyDict, IonPyFloat, IonPyInt, IonPyList, IonPyNull, IonPySymbol,
IonPyText, IonPyTimestamp]
class SampleData:
"""
Sample domain objects for use throughout this tutorial.
"""
DRIVERS_LICENSE = [
{
'PersonId': '',
'LicenseNumber': 'LEWISR261LL',
'LicenseType': 'Learner',
'ValidFromDate': datetime[2016, 12, 20],
'ValidToDate': datetime[2020, 11, 15]
},
{
'PersonId': '',
'LicenseNumber': 'LOGANB486CG',
'LicenseType': 'Probationary',
'ValidFromDate': datetime[2016, 4, 6],
'ValidToDate': datetime[2020, 11, 15]
},
{
'PersonId': '',
'LicenseNumber': '744 849 301',
'LicenseType': 'Full',
'ValidFromDate': datetime[2017, 12, 6],
'ValidToDate': datetime[2022, 10, 15]
},
{
'PersonId': '',
'LicenseNumber': 'P626-168-229-765',
'LicenseType': 'Learner',
'ValidFromDate': datetime[2017, 8, 16],
'ValidToDate': datetime[2021, 11, 15]
},
{
'PersonId': '',
'LicenseNumber': 'S152-780-97-415-0',
'LicenseType': 'Probationary',
'ValidFromDate': datetime[2015, 8, 15],
'ValidToDate': datetime[2021, 8, 21]
}
]
PERSON = [
{
'FirstName': 'Raul',
'LastName': 'Lewis',
'Address': '1719 University Street, Seattle, WA, 98109',
'DOB': datetime[1963, 8, 19],
'GovId': 'LEWISR261LL',
'GovIdType': 'Driver License'
},
{
'FirstName': 'Brent',
'LastName': 'Logan',
'DOB': datetime[1967, 7, 3],
'Address': '43 Stockert Hollow Road, Everett, WA, 98203',
'GovId': 'LOGANB486CG',
'GovIdType': 'Driver License'
},
{
'FirstName': 'Alexis',
'LastName': 'Pena',
'DOB': datetime[1974, 2, 10],
'Address': '4058 Melrose Street, Spokane Valley, WA, 99206',
'GovId': '744 849 301',
'GovIdType': 'SSN'
},
{
'FirstName': 'Melvin',
'LastName': 'Parker',
'DOB': datetime[1976, 5, 22],
'Address': '4362 Ryder Avenue, Seattle, WA, 98101',
'GovId': 'P626-168-229-765',
'GovIdType': 'Passport'
},
{
'FirstName': 'Salvatore',
'LastName': 'Spencer',
'DOB': datetime[1997, 11, 15],
'Address': '4450 Honeysuckle Lane, Seattle, WA, 98101',
'GovId': 'S152-780-97-415-0',
'GovIdType': 'Passport'
}
]
VEHICLE = [
{
'VIN': '1N4AL11D75C109151',
'Type': 'Sedan',
'Year': 2011,
'Make': 'Audi',
'Model': 'A5',
'Color': 'Silver'
},
{
'VIN': 'KM8SRDHF6EU074761',
'Type': 'Sedan',
'Year': 2015,
'Make': 'Tesla',
'Model': 'Model S',
'Color': 'Blue'
},
{
'VIN': '3HGGK5G53FM761765',
'Type': 'Motorcycle',
'Year': 2011,
'Make': 'Ducati',
'Model': 'Monster 1200',
'Color': 'Yellow'
},
{
'VIN': '1HVBBAANXWH544237',
'Type': 'Semi',
'Year': 2009,
'Make': 'Ford',
'Model': 'F 150',
'Color': 'Black'
},
{
'VIN': '1C4RJFAG0FC625797',
'Type': 'Sedan',
'Year': 2019,
'Make': 'Mercedes',
'Model': 'CLK 350',
'Color': 'White'
}
]
VEHICLE_REGISTRATION = [
{
'VIN': '1N4AL11D75C109151',
'LicensePlateNumber': 'LEWISR261LL',
'State': 'WA',
'City': 'Seattle',
'ValidFromDate': datetime[2017, 8, 21],
'ValidToDate': datetime[2020, 5, 11],
'PendingPenaltyTicketAmount': Decimal['90.25'],
'Owners': {
'PrimaryOwner': {'PersonId': ''},
'SecondaryOwners': []
}
},
{
'VIN': 'KM8SRDHF6EU074761',
'LicensePlateNumber': 'CA762X',
'State': 'WA',
'City': 'Kent',
'PendingPenaltyTicketAmount': Decimal['130.75'],
'ValidFromDate': datetime[2017, 9, 14],
'ValidToDate': datetime[2020, 6, 25],
'Owners': {
'PrimaryOwner': {'PersonId': ''},
'SecondaryOwners': []
}
},
{
'VIN': '3HGGK5G53FM761765',
'LicensePlateNumber': 'CD820Z',
'State': 'WA',
'City': 'Everett',
'PendingPenaltyTicketAmount': Decimal['442.30'],
'ValidFromDate': datetime[2011, 3, 17],
'ValidToDate': datetime[2021, 3, 24],
'Owners': {
'PrimaryOwner': {'PersonId': ''},
'SecondaryOwners': []
}
},
{
'VIN': '1HVBBAANXWH544237',
'LicensePlateNumber': 'LS477D',
'State': 'WA',
'City': 'Tacoma',
'PendingPenaltyTicketAmount': Decimal['42.20'],
'ValidFromDate': datetime[2011, 10, 26],
'ValidToDate': datetime[2023, 9, 25],
'Owners': {
'PrimaryOwner': {'PersonId': ''},
'SecondaryOwners': []
}
},
{
'VIN': '1C4RJFAG0FC625797',
'LicensePlateNumber': 'TH393F',
'State': 'WA',
'City': 'Olympia',
'PendingPenaltyTicketAmount': Decimal['30.45'],
'ValidFromDate': datetime[2013, 9, 2],
'ValidToDate': datetime[2024, 3, 19],
'Owners': {
'PrimaryOwner': {'PersonId': ''},
'SecondaryOwners': []
}
}
]
def convert_object_to_ion[py_object]:
"""
Convert a Python object into an Ion object.
:type py_object: object
:param py_object: The object to convert.
:rtype: :py:class:`amazon.ion.simple_types.IonPyValue`
:return: The converted Ion object.
"""
ion_object = loads[dumps[py_object]]
return ion_object
def to_ion_struct[key, value]:
"""
Convert the given key and value into an Ion struct.
:type key: str
:param key: The key which serves as an unique identifier.
:type value: str
:param value: The value associated with a given key.
:rtype: :py:class:`amazon.ion.simple_types.IonPyDict`
:return: The Ion dictionary object.
"""
ion_struct = dict[]
ion_struct[key] = value
return loads[str[ion_struct]]
def get_document_ids[transaction_executor, table_name, field, value]:
"""
Gets the document IDs from the given table.
:type transaction_executor: :py:class:`pyqldb.execution.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
:type table_name: str
:param table_name: The table name to query.
:type field: str
:param field: A field to query.
:type value: str
:param value: The key of the given field.
:rtype: list
:return: A list of document IDs.
"""
query = "SELECT id FROM {} AS t BY id WHERE t.{} = ?".format[table_name, field]
cursor = transaction_executor.execute_statement[query, convert_object_to_ion[value]]
return list[map[lambda table: table.get['id'], cursor]]
def get_document_ids_from_dml_results[result]:
"""
Return a list of modified document IDs as strings from DML results.
:type result: :py:class:`pyqldb.cursor.buffered_cursor.BufferedCursor`
:param: result: The result set from DML operation.
:rtype: list
:return: List of document IDs.
"""
ret_val = list[map[lambda x: x.get['documentId'], result]]
return ret_val
def print_result[cursor]:
"""
Pretty print the result set. Returns the number of documents in the result set.
:type cursor: :py:class:`pyqldb.cursor.stream_cursor.StreamCursor`/
:py:class:`pyqldb.cursor.buffered_cursor.BufferedCursor`
:param cursor: An instance of the StreamCursor or BufferedCursor class.
:rtype: int
:return: Number of documents in the result set.
"""
result_counter = 0
for row in cursor:
# Each row would be in Ion format.
print_ion[row]
result_counter += 1
return result_counter
def print_ion[ion_value]:
"""
Pretty print an Ion Value.
:type ion_value: :py:class:`amazon.ion.simple_types.IonPySymbol`
:param ion_value: Any Ion Value to be pretty printed.
"""
logger.info[dumps[ion_value, binary=False, indent=' ', omit_version_marker=True]]get_document_idsFungsi ini menjalankan query yang mengembalikan ID dokumen sistem-ditugaskan dari tabel. Untuk mempelajari selengkapnya, lihat Menggunakan klausa BY untuk query ID dokumen.
Gunakan program berikut [insert_document.py] untuk memasukkan data sampel ke dalam tabel Anda.
# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this
# software and associated documentation files [the "Software"], to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# This code expects that you have AWS credentials setup per:
# //boto3.amazonaws.com/v1/documentation/api/latest/guide/quickstart.html
from logging import basicConfig, getLogger, INFO
from pyqldbsamples.constants import Constants
from pyqldbsamples.model.sample_data import convert_object_to_ion, SampleData, get_document_ids_from_dml_results
from pyqldbsamples.connect_to_ledger import create_qldb_driver
logger = getLogger[__name__]
basicConfig[level=INFO]
def update_person_id[document_ids]:
"""
Update the PersonId value for DriversLicense records and the PrimaryOwner value for VehicleRegistration records.
:type document_ids: list
:param document_ids: List of document IDs.
:rtype: list
:return: Lists of updated DriversLicense records and updated VehicleRegistration records.
"""
new_drivers_licenses = SampleData.DRIVERS_LICENSE.copy[]
new_vehicle_registrations = SampleData.VEHICLE_REGISTRATION.copy[]
for i in range[len[SampleData.PERSON]]:
drivers_license = new_drivers_licenses[i]
registration = new_vehicle_registrations[i]
drivers_license.update[{'PersonId': str[document_ids[i]]}]
registration['Owners']['PrimaryOwner'].update[{'PersonId': str[document_ids[i]]}]
return new_drivers_licenses, new_vehicle_registrations
def insert_documents[driver, table_name, documents]:
"""
Insert the given list of documents into a table in a single transaction.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
:type table_name: str
:param table_name: Name of the table to insert documents into.
:type documents: list
:param documents: List of documents to insert.
:rtype: list
:return: List of documents IDs for the newly inserted documents.
"""
logger.info['Inserting some documents in the {} table...'.format[table_name]]
statement = 'INSERT INTO {} ?'.format[table_name]
cursor = driver.execute_lambda[lambda executor: executor.execute_statement[statement,
convert_object_to_ion[documents]]]
list_of_document_ids = get_document_ids_from_dml_results[cursor]
return list_of_document_ids
def update_and_insert_documents[driver]:
"""
Handle the insertion of documents and updating PersonIds.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
"""
list_ids = insert_documents[driver, Constants.PERSON_TABLE_NAME, SampleData.PERSON]
logger.info["Updating PersonIds for 'DriversLicense' and PrimaryOwner for 'VehicleRegistration'..."]
new_licenses, new_registrations = update_person_id[list_ids]
insert_documents[driver, Constants.VEHICLE_TABLE_NAME, SampleData.VEHICLE]
insert_documents[driver, Constants.VEHICLE_REGISTRATION_TABLE_NAME, new_registrations]
insert_documents[driver, Constants.DRIVERS_LICENSE_TABLE_NAME, new_licenses]
def main[ledger_name=Constants.LEDGER_NAME]:
"""
Insert documents into a table in a QLDB ledger.
"""
try:
with create_qldb_driver[ledger_name] as driver:
# An INSERT statement creates the initial revision of a document with a version number of zero.
# QLDB also assigns a unique document identifier in GUID format as part of the metadata.
update_and_insert_documents[driver]
logger.info['Documents inserted successfully!']
except Exception as e:
logger.exception['Error inserting or updating documents.']
raise e
if __name__ == '__main__':
main[]# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this
# software and associated documentation files [the "Software"], to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# This code expects that you have AWS credentials setup per:
# //boto3.amazonaws.com/v1/documentation/api/latest/guide/quickstart.html
from logging import basicConfig, getLogger, INFO
from pyqldbsamples.constants import Constants
from pyqldbsamples.model.sample_data import convert_object_to_ion, SampleData, get_document_ids_from_dml_results
from pyqldbsamples.connect_to_ledger import create_qldb_session
logger = getLogger[__name__]
basicConfig[level=INFO]
def update_person_id[document_ids]:
"""
Update the PersonId value for DriversLicense records and the PrimaryOwner value for VehicleRegistration records.
:type document_ids: list
:param document_ids: List of document IDs.
:rtype: list
:return: Lists of updated DriversLicense records and updated VehicleRegistration records.
"""
new_drivers_licenses = SampleData.DRIVERS_LICENSE.copy[]
new_vehicle_registrations = SampleData.VEHICLE_REGISTRATION.copy[]
for i in range[len[SampleData.PERSON]]:
drivers_license = new_drivers_licenses[i]
registration = new_vehicle_registrations[i]
drivers_license.update[{'PersonId': str[document_ids[i]]}]
registration['Owners']['PrimaryOwner'].update[{'PersonId': str[document_ids[i]]}]
return new_drivers_licenses, new_vehicle_registrations
def insert_documents[transaction_executor, table_name, documents]:
"""
Insert the given list of documents into a table in a single transaction.
:type transaction_executor: :py:class:`pyqldb.execution.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
:type table_name: str
:param table_name: Name of the table to insert documents into.
:type documents: list
:param documents: List of documents to insert.
:rtype: list
:return: List of documents IDs for the newly inserted documents.
"""
logger.info['Inserting some documents in the {} table...'.format[table_name]]
statement = 'INSERT INTO {} ?'.format[table_name]
cursor = transaction_executor.execute_statement[statement, convert_object_to_ion[documents]]
list_of_document_ids = get_document_ids_from_dml_results[cursor]
return list_of_document_ids
def update_and_insert_documents[transaction_executor]:
"""
Handle the insertion of documents and updating PersonIds all in a single transaction.
:type transaction_executor: :py:class:`pyqldb.execution.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
"""
list_ids = insert_documents[transaction_executor, Constants.PERSON_TABLE_NAME, SampleData.PERSON]
logger.info["Updating PersonIds for 'DriversLicense' and PrimaryOwner for 'VehicleRegistration'..."]
new_licenses, new_registrations = update_person_id[list_ids]
insert_documents[transaction_executor, Constants.VEHICLE_TABLE_NAME, SampleData.VEHICLE]
insert_documents[transaction_executor, Constants.VEHICLE_REGISTRATION_TABLE_NAME, new_registrations]
insert_documents[transaction_executor, Constants.DRIVERS_LICENSE_TABLE_NAME, new_licenses]
if __name__ == '__main__':
"""
Insert documents into a table in a QLDB ledger.
"""
try:
with create_qldb_session[] as session:
# An INSERT statement creates the initial revision of a document with a version number of zero.
# QLDB also assigns a unique document identifier in GUID format as part of the metadata.
session.execute_lambda[lambda executor: update_and_insert_documents[executor],
lambda retry_attempt: logger.info['Retrying due to OCC conflict...']]
logger.info['Documents inserted successfully!']
except Exception:
logger.exception['Error inserting or updating documents.']Program ini menunjukkan bagaimana memanggil
execute_statementfungsi dengan nilai-nilai parameter. Anda dapat melewati parameter data selain pernyataan PartiQL yang ingin Anda jalankan. Gunakan tanda tanya [
0] sebagai placeholder variabel dalam string pernyataan Anda.# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. # SPDX-License-Identifier: MIT-0 # # Permission is hereby granted, free of charge, to any person obtaining a copy of this # software and associated documentation files [the "Software"], to deal in the Software # without restriction, including without limitation the rights to use, copy, modify, # merge, publish, distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, # INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A # PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # This code expects that you have AWS credentials setup per: # //boto3.amazonaws.com/v1/documentation/api/latest/guide/quickstart.html from logging import basicConfig, getLogger, INFO from pyqldbsamples.constants import Constants from pyqldbsamples.model.sample_data import convert_object_to_ion, SampleData, get_document_ids_from_dml_results from pyqldbsamples.connect_to_ledger import create_qldb_driver logger = getLogger[__name__] basicConfig[level=INFO] def update_person_id[document_ids]: """ Update the PersonId value for DriversLicense records and the PrimaryOwner value for VehicleRegistration records. :type document_ids: list :param document_ids: List of document IDs. :rtype: list :return: Lists of updated DriversLicense records and updated VehicleRegistration records. """ new_drivers_licenses = SampleData.DRIVERS_LICENSE.copy[] new_vehicle_registrations = SampleData.VEHICLE_REGISTRATION.copy[] for i in range[len[SampleData.PERSON]]: drivers_license = new_drivers_licenses[i] registration = new_vehicle_registrations[i] drivers_license.update[{'PersonId': str[document_ids[i]]}] registration['Owners']['PrimaryOwner'].update[{'PersonId': str[document_ids[i]]}] return new_drivers_licenses, new_vehicle_registrations def insert_documents[driver, table_name, documents]: """ Insert the given list of documents into a table in a single transaction. :type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver` :param driver: An instance of the QldbDriver class. :type table_name: str :param table_name: Name of the table to insert documents into. :type documents: list :param documents: List of documents to insert. :rtype: list :return: List of documents IDs for the newly inserted documents. """ logger.info['Inserting some documents in the {} table...'.format[table_name]] statement = 'INSERT INTO {} ?'.format[table_name] cursor = driver.execute_lambda[lambda executor: executor.execute_statement[statement, convert_object_to_ion[documents]]] list_of_document_ids = get_document_ids_from_dml_results[cursor] return list_of_document_ids def update_and_insert_documents[driver]: """ Handle the insertion of documents and updating PersonIds. :type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver` :param driver: An instance of the QldbDriver class. """ list_ids = insert_documents[driver, Constants.PERSON_TABLE_NAME, SampleData.PERSON] logger.info["Updating PersonIds for 'DriversLicense' and PrimaryOwner for 'VehicleRegistration'..."] new_licenses, new_registrations = update_person_id[list_ids] insert_documents[driver, Constants.VEHICLE_TABLE_NAME, SampleData.VEHICLE] insert_documents[driver, Constants.VEHICLE_REGISTRATION_TABLE_NAME, new_registrations] insert_documents[driver, Constants.DRIVERS_LICENSE_TABLE_NAME, new_licenses] def main[ledger_name=Constants.LEDGER_NAME]: """ Insert documents into a table in a QLDB ledger. """ try: with create_qldb_driver[ledger_name] as driver: # An INSERT statement creates the initial revision of a document with a version number of zero. # QLDB also assigns a unique document identifier in GUID format as part of the metadata. update_and_insert_documents[driver] logger.info['Documents inserted successfully!'] except Exception as e: logger.exception['Error inserting or updating documents.'] raise e if __name__ == '__main__': main[]