check python libs installed and version satisfied

gistfile1.py

import pkg_resources
from distutils.version import LooseVersion, StrictVersion
#LooseVersion("2.3.1") < LooseVersion("10.1.2")
import re
'''
test whether python libs are istalled with the required version
'''
libs = {
#import name,  package name,  required version
"Ice":("Ice", ">=3.3.1"),
"redis":("redis", ">=2.6"),
"MySQLdb":("MySQLdb", ""), 
"pylibmc":("pylibmc", ">=1.2.2"), 
"twisted":("twisted", ""), 
"pysolr":("pysolr", ""), 
"simplejson":("simplejson", ""), 
"fabric":("fabric", ""), 
"PIL":("PIL", ""), 
"zookeeper":("zkpython", ""), 
"django":("Django", "==1.4.2"), 
"PyBfdCache":("", ""), 
"flask":("flask", ""), 
"urlgrabber":("urlgrabber", ""), 
"zmq":("zmq", ""), 
"protobuf":("protobuf", ""),
}

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
 
    def disable(self):
        self.HEADER = ''
        self.OKBLUE = ''
        self.OKGREEN = ''
        self.WARNING = ''
        self.FAIL = ''
        self.ENDC = ''

for l in libs:
    try:
        __import__(l)
    except Exception, e:
        print bcolors.FAIL + "Not Found: %s, erro info: %s"%(l, e) + bcolors.ENDC
        continue
    
    if libs[l][0]:
        try:
            version = pkg_resources.get_distribution(libs[l][0]).version
        except:
            version = ""
    else:
        version = ""
    version_satisfied = False
    
    if version == "":
        if libs[l][1]:
            version_satisfied = False
        else:
            version_satisfied = True
    else:
        if libs[l][1]:
            match = re.match(r"(?P<op>[>=<]{0,2})(?P<reqver>[0-9\.]*)", libs[l][1])
            if match:
                op = match.group("op")
                reqver = match.group("reqver")
            else:
                op = ""
                reqver = ""
            if op:
                cmd = "LooseVersion(\"%s\") %s LooseVersion(\"%s\")"%(version, op, reqver)
                if eval(cmd):
                    version_satisfied = True
                else:
                    version_satisfied = False
            else:
                version_satisfied = False
        else:
            version_satisfied = True
        
    print bcolors.OKGREEN + "found: %s, version: %s, version ok: %s"%(l, version, version_satisfied) + bcolors.ENDC