Postcard Creator

A python wrapper around the Rest API of the Swiss Postcard creator.

Installation

# requires python 3.6 or later
$ pip install postcard-creator

Setup / API Usage

from postcard_creator.postcard_creator import PostcardCreator

w = PostcardCreator(token)
w.get_quota()
w.get_user_info()
w.get_billing_saldo()
w.has_free_postcard()
w.send_free_card(postcard=)

Usage

Log in with your SwissID credentials. Note that 2-factor authentication is not supported (See #40 (comment)).

from postcard_creator.postcard_creator import PostcardCreator, Postcard, Token, Recipient, Sender

token = Token()
token.fetch_token(username='', password='')
token.has_valid_credentials(username='', password='')
recipient = Recipient(prename='', lastname='', street='', place='', zip_code=0000)
sender = Sender(prename='', lastname='', street='', place='', zip_code=0000)
card = Postcard(message='', recipient=recipient, sender=sender, picture_stream=open('./my-photo.jpg', 'rb'))

w = PostcardCreator(token)
w.send_free_card(postcard=card, mock_send=False, image_export=False)

Advanced configuration

The following keyword arguments are available for advanced configuration.

PostcardCreator#send_free_card():

• image_export=False: Export postcard image to current directory (os.getcwd)
• mock_send=False: Do not submit order (testing)
• fallback_color_fill=False: On False: If image is too small, force upscale to match postcard aspect ration (background-size: contain), on True: fallback to color fill mode where image is centered and border is filled with most dominant color found in image.

Logging

import logging

logger = logging.getLogger('postcard_creator')

# log levels
# 5: trace
# 10: debug
# 20: info
# 30: warning

Example

• Postcards is a commandline interface built around this library.
• See postcard-love for more usage examples.

Test

pip install -r requirements.txt
pip install -r requirements-dev.txt
pip install -e .
pytest

Related

• postcards - A CLI for the Swiss Postcard Creator
• postcardcreator - node.js API for the Swiss Post Postcard Creator

Release notes

2.4, 2023-08-12

• add fallback_color_fill parameter in send_free_card()

v2.3, 2022-09-30

• changes in internals of swissid token authentication due to introduction of anomaly-detection #41

v2.2, 2021-07-07

• drop support for postcard_creator_legacy
• update legacy (username/ password) token authentication due to changed endpoints
  • note: legacy method now uses postcard_creator_swissid endpoints instead of postcard_creator_legacy, postcard_creator_legacy is out of life

v2.1, 2021-05-16

• update requests to v2.25.1 to fix "AttributeError: 'NoneType' object has no attribute 'group'" in authentication. #27

v2.0, 2021-02

• support of new swissid authentication (access_token with code/ code_verifier)
• support of new endpoints at https://pccweb.api.post.ch/secure/api/mobile/v1
• class PostcardCreator is a proxy which instantiates an endpoint wrapper compatible with authentication method of token, underlying wrappers are: PostcardCreatorSwissId, PostcardCreatorLegacy
• migration to v2.0
  • with authentication method swissid: if you rely on get_billing_saldo(), get_user_info(): these endpoints return data in different format
  • customizations image_target_width, image_target_height, image_quality_factor no longer compatible with authentication method swissid
• require python 3.6 or later

v1.1, 2020-01-30

• support for swissid authentication
• Method Token#has_valid_credentials and Token#fetch_token introduce a parameter method which can be set to one of these vals: ['mixed', 'legacy', 'swissid']. 'mixed' is default and tries both authentication procedures

v0.0.8, 2018-03-28

• Migrate to postcardcreator API 2.2

v0.0.7, 2017-12-28

• Fix issues with PNG images #6

v0.0.6, 2017-11-22

• internal changes
• do not use requirements.txt in setup.py anymore. set all requirements in install_requires without explicit version numbers

Troubleshooting

“The headers or library files could not be found for jpeg”

pip install fails with the above error. Install libjpeg as discussed here https://stackoverflow.com/questions/44043906/the-headers-or-library-files-could-not-be-found-for-jpeg-installing-pillow-on

"AttributeError: 'FreeTypeFont' object has no attribute 'getsize'"

pip install Pillow==9.5.0

Author

Andrin Bertschi
https://twitter.com/andrinbertschi

License

Apache License 2.0

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