我安装了电报包。但是当我尝试运行这个简单的例子www.example.com时echobot.py，我得到了一个错误：

Traceback (most recent call last):
    File "echobot.py", line 8, in <module>
import telegram ImportError: No module named 'telegram'

有人能帮我吗？
我使用git安装：

$ git clone https://github.com/python-telegram-bot/python-telegram-bot

在此之后：

$ python -i
Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:01:18) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.

import telegram

Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
ImportError: No module named 'telegram'