hedera-sdk-py

Hedera SDK in Python

This is basically a python wrapper of Hedera SDK in Java.

Install

pip install hedera-sdk-py

How to build

• Make sure to install Hedera Java SDK Git submodule
• Build Hedera Java SDK JAR
  • Go to Java SDK directory and apply most recent patch:

  cd ./hedera-sdk-java
  git apply ../patches/v2.43.0.patch

  • Build JAR

  ./gradlew assemble

• Go back to root and run code generation script:

  cd ..
  python ./scripts/generate_code.py

How to Use

from hedera import PrivateKey
prikey = PrivateKey.generate()
print("Private key: {}".format(prikey.toString()))
print("Public key: {}".format(prikey.getPublicKey().toString()))

You must make sure JAVA_HOME is set to a JRE/JDK that's >=11. Do a echo $JAVA_HOME on Linux/MacOS or echo %JAVA_HOME% on Windows to confirm.

MacOS example:

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-16.0.2.jdk/Contents/Home

Linux example:

export JAVA_HOME=/usr/lib/jvm/java-16-openjdk-amd64

Windows:

Type to search "advanced system", you should see "View Advanced System settings", click it, then click "Environment Variables..."

On Windows, if you get "no jvm dll found" error, you need to add %JAVA_HOME%/bin/server (i.e. C:\Program Files\Java\jdk-11.0.10\bin\server) to your path.

See examples for more example usages.