dingtalk-sdk is a Python SDK documented for DingTalk enterprise internal development interfaces and DingTalk application service provider (ISV) interfaces. The documentation also includes message entities, form components, and installation and upgrade guidance.

Currently, the Python environments supported by dingtalk-sdk are 2.7, 3.4, 3.5, 3.6 and pypy.

dingtalk-sdk message encryption and decryption is compatible with both cryptography and PyCrypto, and uses the cryptography library first. You can install cryptography or PyCrypto yourself first:

```bash

# install cryptography

pip install cryptography>=0.8.2

# or install PyCrypto

pip install pycrypto>=2.6.1

```

To simplify the installation process, pip is recommended:

```bash

pip install dingtalk-sdk

# with cryptography

pip install dingtalk-sdk[cryptography]

# with pycrypto

pip install dingtalk-sdk[pycrypto]

```

Upgrade dingtalk-sdk to a new version:

```bash

pip install -U dingtalk-sdk

```

If you need to install the latest code on GitHub:

```bash

pip install https://github.com/007gzs/dingtalk-sdk/archive/master.zip

```