Python ImportError:没有名为串行的模块

我已经在64位DELL LATITUDE E4300上的Ubuntu 12.4上安装了Python 2.7.5，并运行:

I have installed Python 2.7.5 on Ubuntu 12.4 on a DELL LATITUDE E4300 64 bit and ran:

sudo pip install pyserial

尽管如此，在运行时:

sudo python main.py 

我收到以下错误消息:

Traceback (most recent call last):
  File "main.py", line 4, in <module>
    from mySerial import *
  File "/home/oscar/ath10k/tools/sanity_test/src/mySerial.py", line 6, in <module>
    import serial
ImportError: No module named serial

我查看了其他帖子，但没有一个帮助我解决了这个问题.我不知道还能做什么:

I looked on other posts but none of them helped me to solve this problem. I don't know what else to do I also ran:

sudo -H pip install pyserial

和

sudo pip install pyserial --upgrade

任何帮助将不胜感激.

亲切的问候.

奥斯卡.