解决python中导入win32com.client出错的问题

from Tkinter import Tk
from time import sleep, ctime
from tkMessageBox import showwarning
from urllib import urlopen
import win32com.client as win32

Traceback (most recent call last):
 File "estock.pyw", line 7, in <module>
 import win32com.client as win32
ImportError: No module named win32com.client

python -m pip install pypiwin32

>>> import win32com.client
>>>
>>>