├── .flake8 ├── .gitignore ├── .travis.yml ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── examples ├── __init__.py └── sample.py ├── poetry.lock ├── pypix ├── __init__.py └── pix.py └── pyproject.toml /.flake8: -------------------------------------------------------------------------------- 1 | [flake8] 2 | max-line-length = 119 3 | ignore = E501,W503,E203 -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | pip-wheel-metadata/ 24 | share/python-wheels/ 25 | *.egg-info/ 26 | .installed.cfg 27 | *.egg 28 | MANIFEST 29 | 30 | # PyInstaller 31 | # Usually these files are written by a python script from a template 32 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 33 | *.manifest 34 | *.spec 35 | 36 | # Installer logs 37 | pip-log.txt 38 | pip-delete-this-directory.txt 39 | 40 | # Unit test / coverage reports 41 | htmlcov/ 42 | .tox/ 43 | .nox/ 44 | .coverage 45 | .coverage.* 46 | .cache 47 | nosetests.xml 48 | coverage.xml 49 | *.cover 50 | *.py,cover 51 | .hypothesis/ 52 | .pytest_cache/ 53 | 54 | # Translations 55 | *.mo 56 | *.pot 57 | 58 | # Django stuff: 59 | *.log 60 | local_settings.py 61 | db.sqlite3 62 | db.sqlite3-journal 63 | 64 | # Flask stuff: 65 | instance/ 66 | .webassets-cache 67 | 68 | # Scrapy stuff: 69 | .scrapy 70 | 71 | # Sphinx documentation 72 | docs/_build/ 73 | 74 | # PyBuilder 75 | target/ 76 | 77 | # Jupyter Notebook 78 | .ipynb_checkpoints 79 | 80 | # IPython 81 | profile_default/ 82 | ipython_config.py 83 | 84 | # pyenv 85 | .python-version 86 | 87 | # pipenv 88 | # According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. 89 | # However, in case of collaboration, if having platform-specific dependencies or dependencies 90 | # having no cross-platform support, pipenv may install dependencies that don't work, or not 91 | # install all needed dependencies. 92 | #Pipfile.lock 93 | 94 | # PEP 582; used by e.g. github.com/David-OConnor/pyflow 95 | __pypackages__/ 96 | 97 | # Celery stuff 98 | celerybeat-schedule 99 | celerybeat.pid 100 | 101 | # SageMath parsed files 102 | *.sage.py 103 | 104 | # Environments 105 | .env 106 | .venv 107 | env/ 108 | venv/ 109 | ENV/ 110 | env.bak/ 111 | venv.bak/ 112 | 113 | # Spyder project settings 114 | .spyderproject 115 | .spyproject 116 | 117 | # Rope project settings 118 | .ropeproject 119 | 120 | # mkdocs documentation 121 | /site 122 | 123 | # mypy 124 | .mypy_cache/ 125 | .dmypy.json 126 | dmypy.json 127 | 128 | # Pyre type checker 129 | .pyre/ 130 | 131 | # IDE 132 | .idea/ -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | # use container-based Ubuntu Trusty 2 | dist: bionic 3 | sudo: true 4 | 5 | language: python 6 | python: 7 | - "3.6.8" 8 | 9 | services: 10 | - docker 11 | 12 | install: 13 | - pip install -U pip==20.2.2 setuptools==49.6.0 14 | - pip install poetry 15 | - poetry install 16 | 17 | script: 18 | - poetry run flake8 19 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to Contribute 2 | 3 | ## Branch Organization 4 | You can submit all changes to the `staging branch`, where we do whole our tests for new features 5 | 6 | ## Flags for your branch 7 | 8 | To keep the `staging branch` in a releasable state, breaking changes and experimental features must be gated behind a feature flag. 9 | 10 | #### New Feature 11 | Use this flag to create a branch for new features 12 | - `feature/feature_name` 13 | 14 | #### Bug fix 15 | Use this flag to fix some bug 16 | - `bugfix/bug_name` 17 | 18 | #### Edit something 19 | Use this flag to edit something 20 | - `edit/edit_name` 21 | 22 | ## Your First Pull Request 23 | 24 | Working on your first Pull Request? You can learn how from this free video series: 25 |

26 | 27 | How to Contribute to an Open Source Project on GitHub 28 | 29 |

30 | 31 | ## Sending a Pull Request 32 | The developers is monitoring for pull requests. We will review your pull request and either merge it, request changes to it, or close it with an explanation. 33 | 34 | **Before submitting a pull request, please make sure the following is done:** 35 | 36 | 1. Fork [the repository](https://github.com/dyohan9/python-pix) and create your branch from `master`. 37 | 38 | 2. Run `poetry install` in the repository root. 39 | 40 | 3. Make sure your code lints (`poetry run flake8`). 41 | 42 | 4. Make sure your code lints (`poetry run black pyypix`). 43 | 44 | 5. If everything is ready, send your PR to `staging branch`. 45 | 46 | ## License 47 | 48 | - **[GPL-3.0 License](https://github.com/dyohan9/python-pix/blob/master/LICENSE)** 49 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Python Pix 2 | ========================== 3 | 4 | [![pypi](https://img.shields.io/pypi/v/pypix.svg)](https://pypi.org/project/pypix/) 5 | [![Build Status](https://travis-ci.com/dyohan9/python-pix.svg?branch=master)](https://travis-ci.com/dyohan9/python-pix) 6 | [![Python Version](https://img.shields.io/badge/python-3.6%20%7C%203.7%20%7C%203.8-blue.svg)](https://www.python.org/) 7 | [![License GPL-3.0](https://img.shields.io/badge/license-%20GPL--3.0-yellow.svg)](https://github.com/bothub-it/bothub-engine/blob/master/LICENSE) 8 | 9 | 10 | This library automates the creation of Pix keys 11 | 12 | Installing 13 | ---------- 14 | 15 | You can install using [pip](https://pip.pypa.io/en/stable/): 16 | 17 | $ pip install pypix 18 | 19 | ### Supported Python Versions 20 | 21 | Python \>= 3.6 22 | 23 | ### Deprecated Python Versions 24 | 25 | Python == 2.7. Python 2.7 support will be removed on January 1, 2020. 26 | 27 | Current Maintainers 28 | ------------------- 29 | 30 | - [@dyohan9](https://github.com/dyohan9) (Daniel Yohan) 31 | 32 | Authors 33 | ------- 34 | 35 | - [@dyohan9](https://github.com/dyohan9) (Daniel Yohan) 36 | 37 | Contributing 38 | ------------ 39 | 40 | Contributions to this library are always welcome and highly encouraged. 41 | 42 | See 43 | [CONTRIBUTING.md](https://github.com/dyohan9/python-pix/blob/master/CONTRIBUTING.md) 44 | for more information on how to get started. 45 | 46 | License 47 | ------- 48 | 49 | GPL-3.0 License - See [the 50 | LICENSE](https://github.com/dyohan9/python-pix/blob/master/LICENSE) 51 | for more information. 52 | -------------------------------------------------------------------------------- /examples/__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dyohan9/python-pix/473aa89395e7b1f45130847f7adb6c03cd010253/examples/__init__.py -------------------------------------------------------------------------------- /examples/sample.py: -------------------------------------------------------------------------------- 1 | from pypix import Pix 2 | 3 | pix = Pix() 4 | pix.set_pixkey('12345678910') 5 | pix.set_description('Pagamento') 6 | pix.set_amount(500.00) 7 | pix.set_merchant_name('Daniel Yohan') 8 | pix.set_merchant_city('MACEIO') 9 | pix.set_txid('Aquele Lanche') 10 | print(pix) 11 | -------------------------------------------------------------------------------- /poetry.lock: -------------------------------------------------------------------------------- 1 | [[package]] 2 | name = "appdirs" 3 | version = "1.4.4" 4 | description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"." 5 | category = "dev" 6 | optional = false 7 | python-versions = "*" 8 | 9 | [[package]] 10 | name = "attrs" 11 | version = "20.3.0" 12 | description = "Classes Without Boilerplate" 13 | category = "dev" 14 | optional = false 15 | python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*" 16 | 17 | [package.extras] 18 | dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"] 19 | docs = ["furo", "sphinx", "zope.interface"] 20 | tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"] 21 | tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"] 22 | 23 | [[package]] 24 | name = "black" 25 | version = "19.10b0" 26 | description = "The uncompromising code formatter." 27 | category = "dev" 28 | optional = false 29 | python-versions = ">=3.6" 30 | 31 | [package.dependencies] 32 | appdirs = "*" 33 | attrs = ">=18.1.0" 34 | click = ">=6.5" 35 | pathspec = ">=0.6,<1" 36 | regex = "*" 37 | toml = ">=0.9.4" 38 | typed-ast = ">=1.4.0" 39 | 40 | [package.extras] 41 | d = ["aiohttp (>=3.3.2)", "aiohttp-cors"] 42 | 43 | [[package]] 44 | name = "click" 45 | version = "7.1.2" 46 | description = "Composable command line interface toolkit" 47 | category = "dev" 48 | optional = false 49 | python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*" 50 | 51 | [[package]] 52 | name = "flake8" 53 | version = "3.8.4" 54 | description = "the modular source code checker: pep8 pyflakes and co" 55 | category = "dev" 56 | optional = false 57 | python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7" 58 | 59 | [package.dependencies] 60 | importlib-metadata = {version = "*", markers = "python_version < \"3.8\""} 61 | mccabe = ">=0.6.0,<0.7.0" 62 | pycodestyle = ">=2.6.0a1,<2.7.0" 63 | pyflakes = ">=2.2.0,<2.3.0" 64 | 65 | [[package]] 66 | name = "importlib-metadata" 67 | version = "3.1.0" 68 | description = "Read metadata from Python packages" 69 | category = "dev" 70 | optional = 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-------------------------------------------------------------------------------- /pypix/__init__.py: -------------------------------------------------------------------------------- 1 | from .pix import Pix # noqa: F401 2 | -------------------------------------------------------------------------------- /pypix/pix.py: -------------------------------------------------------------------------------- 1 | class Pix(object): 2 | def __init__(self): 3 | """ 4 | Define objects of type Pix. 5 | https://www.bcb.gov.br/content/estabilidadefinanceira/spb_docs/ManualBRCode.pdf 6 | """ 7 | self._ID_PAYLOAD_FORMAT_INDICATOR = "00" 8 | self._ID_MERCHANT_ACCOUNT_INFORMATION = "26" 9 | self._ID_MERCHANT_ACCOUNT_INFORMATION_GUI = "00" 10 | self._ID_MERCHANT_ACCOUNT_INFORMATION_KEY = "01" 11 | self._ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION = "02" 12 | self._ID_MERCHANT_CATEGORY_CODE = "52" 13 | self._ID_TRANSACTION_CURRENCY = "53" 14 | self._ID_TRANSACTION_AMOUNT = "54" 15 | self._ID_COUNTRY_CODE = "58" 16 | self._ID_MERCHANT_NAME = "59" 17 | self._ID_MERCHANT_CITY = "60" 18 | self._ID_ADDITIONAL_DATA_FIELD_TEMPLATE = "62" 19 | self._ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID = "05" 20 | self._ID_CRC16 = "63" 21 | 22 | self.pixkey = None 23 | self.description = None 24 | self.merchant_name = None 25 | self.merchant_city = None 26 | self.country_code = "BR" 27 | self.txid = None 28 | self.amount = None 29 | 30 | def __str__(self): 31 | payload = "{}{}{}{}{}{}{}{}{}".format( 32 | self.get_value(self._ID_PAYLOAD_FORMAT_INDICATOR, "01"), 33 | self.get_merchant_account_information(), 34 | self.get_value(self._ID_MERCHANT_CATEGORY_CODE, "0000"), 35 | self.get_value(self._ID_TRANSACTION_CURRENCY, "986"), 36 | self.get_value(self._ID_TRANSACTION_AMOUNT, self.amount), 37 | self.get_value(self._ID_COUNTRY_CODE, self.country_code), 38 | self.get_value(self._ID_MERCHANT_NAME, self.merchant_name), 39 | self.get_value(self._ID_MERCHANT_CITY, self.merchant_city), 40 | self.get_additional_data_field_template(), 41 | ) 42 | 43 | return "{}{}".format(payload, self.get_crc16(payload)) 44 | 45 | def set_pixkey(self, pixkey: str): 46 | self.pixkey = pixkey 47 | 48 | def set_description(self, description: str): 49 | self.description = description 50 | 51 | def set_merchant_name(self, merchant_name: str): 52 | self.merchant_name = merchant_name 53 | 54 | def set_merchant_city(self, merchant_city: str): 55 | self.merchant_city = merchant_city 56 | 57 | def set_country_code(self, country: str): 58 | self.country_code = country 59 | 60 | def set_txid(self, txid: str): 61 | """Defines the transaction identifier.""" 62 | self.txid = txid 63 | 64 | def set_amount(self, amount: float): 65 | """Defines the transaction amount""" 66 | self.amount = str(amount) 67 | 68 | def get_value(self, identify: str, value: str): 69 | """Concatenates the identifier and the value""" 70 | return "{}{}{}".format(identify, str(len(value)).zfill(2), value) 71 | 72 | def get_merchant_account_information(self): 73 | gui = self.get_value( 74 | self._ID_MERCHANT_ACCOUNT_INFORMATION_GUI, "br.gov.bcb.pix" 75 | ) 76 | key = self.get_value(self._ID_MERCHANT_ACCOUNT_INFORMATION_KEY, self.pixkey) 77 | description = ( 78 | self.get_value( 79 | self._ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION, self.description 80 | ) 81 | if self.description 82 | else "" 83 | ) 84 | 85 | return self.get_value( 86 | self._ID_MERCHANT_ACCOUNT_INFORMATION, 87 | "{}{}{}".format(gui, key, description), 88 | ) 89 | 90 | def get_additional_data_field_template(self): 91 | txid = self.get_value(self._ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID, self.txid) 92 | return self.get_value(self._ID_ADDITIONAL_DATA_FIELD_TEMPLATE, txid) 93 | 94 | def toHex(self, dec: float): 95 | digits = "0123456789ABCDEF" 96 | x = dec % 16 97 | rest = dec // 16 98 | if rest == 0: 99 | return digits[x] 100 | return self.toHex(rest) + digits[x] 101 | 102 | def get_crc16(self, payload: str): 103 | payload = "{}{}04".format(payload, self._ID_CRC16) 104 | crc = 0xFFFF 105 | for i in range(len(payload)): 106 | crc ^= ord(payload[i]) << 8 107 | for j in range(8): 108 | if (crc & 0x8000) > 0: 109 | crc = (crc << 1) ^ 0x1021 110 | else: 111 | crc = crc << 1 112 | return "{}{}{}".format(self._ID_CRC16, "04", self.toHex(crc & 0xFFFF).upper()) 113 | -------------------------------------------------------------------------------- /pyproject.toml: -------------------------------------------------------------------------------- 1 | [tool.poetry] 2 | name = "pypix" 3 | version = "0.1.6" 4 | description = "Python library for generating pix codes with CRC16 validation" 5 | authors = ["Daniel Yohan "] 6 | readme = "README.md" 7 | license = "GPL-3.0 License" 8 | keywords = ["pix", "banco-central", "pagamento", "payment"] 9 | repository = "https://github.com/dyohan9/python-pix" 10 | classifiers = [ "Development Status :: 1 - Planning", "Intended Audience :: Developers", "License :: OSI Approved :: GNU General Public License v3 (GPLv3)", "Programming Language :: Python", "Programming Language :: Python :: 3.6", "Programming Language :: Python :: 3.7", "Programming Language :: Python :: 3.8", "Topic :: Software Development :: Libraries",] 11 | 12 | [tool.poetry.dependencies] 13 | python = "^3.6" 14 | 15 | [tool.poetry.dev-dependencies] 16 | flake8 = "^3.8.4" 17 | black = "^19.3b0" 18 | 19 | [build-system] 20 | requires = ["poetry-core>=1.0.0"] 21 | build-backend = "poetry.core.masonry.api" 22 | --------------------------------------------------------------------------------