preparation.md

Installation

pip install python-alipay-sdk --upgrade
# For python2, use: pip install python-alipay-sdk==1.1 (You should really think about Python3)

Cert generation

# openssl
OpenSSL> genrsa -out app_private_key.pem 2048  # the private key file
OpenSSL> rsa -in app_private_key.pem -pubout -out app_public_key.pem # export public key
OpenSSL> exit

The public key we download from open.alipay.com is a string, which cannot be recognied by this lib directly, making sure it's surrounded with

-----BEGIN PUBLIC KEY----- and -----END PUBLIC KEY-----

There is also an example for your reference