一、前言

遇到客户给了一个需求,需要拼接多个图片,上网找到一个解决方式,不过是需要安装PIL的,相信安装过这个库的应该都遇到很多问题,接下来说说怎么解决。

我的环境是:

操作系统:win10 64bit

python版本:2.7.15

二、问题

1. 使用pip安装

使用命令:

pip install PIL

提示:

Could not find a version that satisfies the requirement PIL (from versions: )

No matching distribution found for PIL

2. 直接安装windows安装包

在python lib网站(http://effbot.org/downloads/#Imaging),可以下载PIL-1.1.7.win32-py2.7.exe,直接安装。

提示:Python version 2.7 required…

主要原因是安装这个的时候需要去注册表找python相关信息,也就是安装的时候是和当前有依赖的,可以下载网站上的脚本(http://effbot.org/zone/python-register.htm)来修复一下:

#

#script to register Python 2.0 or later for use with win32all#and other extensions that require Python registry settings#

#written by Joakim Löw for Secret Labs AB / PythonWare#

#source:#http://www.pythonware.com/products/works/articles/regpy20.htm

importsysfrom _winreg import *

#tweak as necessary

version = sys.version[:3]

installpath=sys.prefix

regpath= "SOFTWARE\\Python\\Pythoncore\\%s\\" %(version)

installkey= "InstallPath"pythonkey= "PythonPath"pythonpath= "%s;%s\\Lib\\;%s\\DLLs\\" %(

installpath, installpath, installpath

)defRegisterPy():try:

reg=OpenKey(HKEY_LOCAL_MACHINE, regpath)exceptEnvironmentError:try:

reg=CreateKey(HKEY_LOCAL_MACHINE, regpath)

SetValue(reg, installkey, REG_SZ, installpath)

SetValue(reg, pythonkey, REG_SZ, pythonpath)

CloseKey(reg)except:print "*** Unable to register!"

return

print "--- Python", version, "is now registered!"

return

if (QueryValue(reg, installkey) == installpath andQueryValue(reg, pythonkey)==pythonpath):

CloseKey(reg)print "=== Python", version, "is already registered!"

returnCloseKey(reg)print "*** Unable to register!"

print "*** You probably have another Python installation!"

if __name__ == "__main__":

RegisterPy()

不过运行完提示:

"*** Unable to register!"

"*** You probably have another Python installation!"

找了很久终于找到问题:

分析脚本的源代码可以看出,该脚本的作用是在注册表:

HKEY_LOCAL_MACHINE/SOFTWARE/Python/PythonCore/

的位置创建注册表项,从而给PIL的安装程序使用。但是由于PIL的安装程序只在并未在此处搜索注册表项,所以造成上述错误。

通过查阅资料得出:官网下载的PIL的安装程序在Windows10 64bit平台下搜索注册表项目的位置为:

HKEY_CURRENT_USER/SOFTWARE/Python/PythonCore

而不是脚本中写入的

HKEY_LOCAL_MACHINE

因此,将脚本中两处HKEY_LOCAL_MACHINE替换为HKEY_CURRENT_USER(Line22,25),再次运行即可解决问题。修改后脚本如下:

#-*- coding:utf-8 -*-#

#script to register Python 2.0 or later for use with win32all#and other extensions that require Python registry settings#

#written by Joakim Löw for Secret Labs AB / PythonWare#

#source:#http://www.pythonware.com/products/works/articles/regpy20.htm

importsysfrom _winreg import *

#tweak as necessary

version = sys.version[:3]

installpath=sys.prefix

regpath= "SOFTWARE\\Python\\Pythoncore\\%s\\" %(version)

installkey= "InstallPath"pythonkey= "PythonPath"pythonpath= "%s;%s\\Lib\\;%s\\DLLs\\" %(

installpath, installpath, installpath

)printversion,pythonpathdefRegisterPy():try:

reg=OpenKey(HKEY_CURRENT_USER, regpath)exceptEnvironmentError:try:

reg=CreateKey(HKEY_CURRENT_USER, regpath)

SetValue(reg, installkey, REG_SZ, installpath)

SetValue(reg, pythonkey, REG_SZ, pythonpath)

CloseKey(reg)except:print "*** Unable to register!"

return

print "--- Python", version, "is now registered!"

return

if (QueryValue(reg, installkey) == installpath andQueryValue(reg, pythonkey)==pythonpath):

CloseKey(reg)print "=== Python", version, "is already registered!"

returnCloseKey(reg)print "*** Unable to register!"

print "*** You probably have another Python installation!"

if __name__ == "__main__":

RegisterPy()

运行,搞定!

3. 导入Image报错

如果你跑到这里,然后输入:

from PIL import Image

没有报错的话,可以不用看下去了。

偏偏我这边会报错:

ImportError: The _imaging C module is not installed

这个问题很棘手,应该是一些兼容性的问题,网上很多答案语焉不详,很多都是说要用二进制编辑器修改_imagingft.pyd的,但是用了网上别人修改过的文件还是没能解决问题。

4. 换轮子

既然PIL这么麻烦就换轮子吧,逛论坛的时候发现一个网站,里面恰好有PIL的替代品:Pillow,下载地址:https://www.lfd.uci.edu/~gohlke/pythonlibs/,根据自己的操作系统和python版本选择,最后进入目录用pip安装一下:

pip install Pillow-5.2.0-cp27-cp27m-win_amd64.whl

重新导入Image,没有报错,并且功能正常。

三、参考

(完)

Logo

腾讯云面向开发者汇聚海量精品云计算使用和开发经验,营造开放的云计算技术生态圈。

更多推荐