python安裝numpy科學計算模塊

解決兩個問題：

（1）Import Error: No module named numpy

（2）Python version 2.7 required, which was not found in the registry

（1）這種錯誤是由於沒有安裝numpy科學計算庫，所以須要安裝此模塊。

1. 首先下載正確的exe安裝文件：numpy-MKL-1.8.0.win-amd64-py2.7.exe。

2. 接着咱們雙加打開安裝文件，點擊運行按鈕

3. 安裝過程很簡單，點擊下一步

4. 在第一步，若是你看到本身的python的版本號和安裝路徑，說明你的numpy下載的版本是正確的，點擊下一步

5. 一直點擊下一步便可完成安裝

6. 打開python，咱們輸入import numpy，若是沒有提示錯誤信息，就說明咱們安裝完成

注意：在安裝的過程當中，可能會出現：

Python version 2.7 required, which was not found in the registry

這是由於python安裝時沒有寫入到註冊表中：

解決方法爲：

寫一個以下腳本，能夠命名爲：PythonRegister.py：

 1 # script to register Python 2.0 or later for use with win32all  
 2 # and other extensions that require Python registry settings  
 3 #  
 4 # written by Joakim Loew for Secret Labs AB / PythonWare  
 5 #  
 6 # source:  
 7 # http://www.pythonware.com/products/works/articles/regpy20.htm  
 8 #  
 9 # modified by Valentine Gogichashvili as described in http://www.mail-archive.com/distutils-sig@python.org/msg10512.html  
10    
11 import sys  
12    
13 from _winreg import *  
14    
15 # tweak as necessary  
16 version = sys.version[:3]  
17 installpath = sys.prefix  
18    
19 regpath = "SOFTWARE\\Python\\Pythoncore\\%s\\" % (version)  
20 installkey = "InstallPath"  
21 pythonkey = "PythonPath"  
22 pythonpath = "%s;%s\\Lib\\;%s\\DLLs\\" % (  
23     installpath, installpath, installpath  
24 )  
25    
26 def RegisterPy():  
27     try:  
28         reg = OpenKey(HKEY_CURRENT_USER, regpath)  
29     except EnvironmentError as e:  
30         try:  
31             reg = CreateKey(HKEY_CURRENT_USER, regpath)  
32             SetValue(reg, installkey, REG_SZ, installpath)  
33             SetValue(reg, pythonkey, REG_SZ, pythonpath)  
34             CloseKey(reg)  
35         except:  
36             print "*** Unable to register!"  
37             return  
38         print "--- Python", version, "is now registered!"  
39         return  
40     if (QueryValue(reg, installkey) == installpath and  
41         QueryValue(reg, pythonkey) == pythonpath):  
42         CloseKey(reg)  
43         print "=== Python", version, "is already registered!"  
44         return  
45     CloseKey(reg)  
46     print "*** Unable to register!"  
47     print "*** You probably have another Python installation!"  
48    
49 if __name__ == "__main__":  
50     RegisterPy()  

而後在CMD中執行：

啓動命令切換到PythonRegister.py文件目錄下執行

從新安裝PIL，錯誤解決，安裝成功。

此時就能夠從新安裝numpy庫。