运行paramiko时Python模块ecdsa错误

我试图安装paramiko模块..失败,出现以下错误

python ./test.py 
Traceback (most recent call last):
  File "./test.py", line 30, in 
    import paramiko
  File "/tmp/build-paramiko/paramiko-1.12.0/paramiko/__init__.py", line 64, in 
    from transport import SecurityOptions, Transport
  File "/tmp/build-paramiko/paramiko-1.12.0/paramiko/transport.py", line 45, in 
    from paramiko.ecdsakey import ECDSAKey
  File "/tmp/build-paramiko/paramiko-1.12.0/paramiko/ecdsakey.py", line 24, in 
    from ecdsa import SigningKey, VerifyingKey, der, curves
ImportError: No module named ecdsa

有关如何进行paramiko安装的任何建议？