使用Python比较RPM软件包

Question

我试图将包含所需Linux软件包的csv文件与当前安装的软件包进行比较。比较应该输出任何未安装或比当前安装的软件包更新的软件包。

问题是我无法遍历已安装的软件包列表并显示所有命中，例如具有相同名称和版本的软件包，但不同的体系结构应显示两次（例如compat-libstdC++ - 33 ），但我只在下面的脚本中获得第一次击中。

#!/usr/bin/python 

import rpm 
import csv 
import sys 
import os 

''' 
Script to check installed rpms against a csv file containing the package name and version similar to the list below: 
atk,1.12.2 
libart_lgpl,2.3 
info,4.9 
libsepol,1.15.2 
libusb,0.1.12 
libfontenc,1.4.2 

''' 

if len(sys.argv) !=2: 
     print '' 
     print 'Usage: ', sys.argv[0], '/path/to/csv_input_file' 
     print '' 
     sys.exit(1) 

if not os.path.isfile(sys.argv[1]): 
     print '' 
     print sys.argv[1], 'not found!' 
     print '' 
     sys.exit(1) 

else: 
     input_csv = sys.argv[1] 

pkgRequired = csv.reader(open(input_csv),delimiter=',') 

pkgInstalledName = [] 
pkgInstalledVersion = [] 
pkgInstalledArch = [] 

ts = rpm.TransactionSet() 
mi = ts.dbMatch() 

for h in mi: 
     pkgInstalledName.append((h['name'])) 
     pkgInstalledVersion.append((h['version'])) 
     pkgInstalledArch.append((h['arch'])) 

for row in pkgRequired: 
     pkgRequiredName = row[0] 
     pkgRequiredVersion = row[1] 
     #pkgRequiredArch = row[2] 

     if pkgRequiredName in pkgInstalledName: 

       if pkgInstalledVersion[pkgInstalledName.index(pkgRequiredName)] >= pkgRequiredVersion: 
         pass 
       else: 
         print '\nInstalled: ',pkgInstalledName[pkgInstalledName.index(pkgRequiredName)], pkgInstalledVersion[pkgInstalledName.index(pkgRequiredName)], pkgInstalledArch[pkgInstalledName.index(pkgRequiredName)], ' \nRequired: ', ' ', pkgRequiredName,pkgRequiredVersion 

Answer 1

假设有一个与你正在阅读安装包的列表（我不熟悉的rpm模块）的方式没有问题，那么你唯一的问题是与使用索引（）函数。此函数返回具有指定值的项目的第一次出现 - 并且它不是您想要的。

正确实现的（这也是更有效）将是：

installedPackages = {} #create a hash table, mapping package names to LISTS of installed package versions and architectures 
for h in mi: 
    l = installedPackages.get(h['name'], list()) #return either the existing list, or a new one if this is the first time that the name appears. 
    l.append((h['version'], h['arch'])) 

... 
if requiredPackageName in installedPackages: 
    for ver, arch in installedPackages[requiredPackageName]: print ... 

Answer 2

这是我落得这样做来得到这个工作。该脚本目前没有检查所需软件包的体系结构，但至少它显示了安装的软件包。该脚本的作品（据我所知），但可以改进，因为它是我的第一个蟒蛇:)

#!/usr/bin/python 

import rpm 
import csv 
import sys 
import os 

''' 
Script to check installed rpms against a csv file containing the package name and version similar to the list below: 
atk,1.12.2 
libart_lgpl,2.3 
info,4.9 
libsepol,1.15.2 
libusb,0.1.12 
libfontenc,1.4.2 

''' 

#silverbullet - 20120301 

if len(sys.argv) !=2: 
     print '' 
     print 'Usage: ', sys.argv[0], '/path/to/csv_input_file' 
     print '' 
     sys.exit(1) 

if not os.path.isfile(sys.argv[1]): 
     print '' 
     print sys.argv[1], 'not found!' 
     print '' 
     sys.exit(1) 

else: 
     input_csv = sys.argv[1] 

pkgRequired = csv.reader(open(input_csv),delimiter=',') 

pkgInstalledName = [] 
pkgInstalledVersion = [] 
pkgInstalledArch = [] 

ts = rpm.TransactionSet() 
mi = ts.dbMatch() 

for h in mi: 
     pkgInstalledName.append((h['name'])) 
     pkgInstalledVersion.append((h['version'])) 
     pkgInstalledArch.append((h['arch'])) 

for row in pkgRequired: 
     try: 
       pkgRequiredName = row[0] 
       pkgRequiredVersion = row[1] 
       #pkgRequiredArch = row[2] - This is not implemented yet, ie, script will ignore architecture in csv input file 
     except: 
       print "Unexpected Error. Check if input is csv format with no blank lines. "#, sys.exc_info()[1] 
       break 
     else: 
       for pos, pkg in enumerate(pkgInstalledName): 
         if pkg == pkgRequiredName: 
           if pkgInstalledVersion[pos] >= pkgRequiredVersion: 
             pass 
           else: 
             print '\nInstalled:', pkgInstalledName[pos], pkgInstalledVersion[pos], pkgInstalledArch[pos], '\nRequired: ', pkg, pkgRequiredVersion