>>> usage = "myprog[ -f <filename>][-s <xyz>] arg1[,arg2..]"
>>> parser=OptionParser(usage) #这里为类添加了参数usage
>>> optParser.add_option("-f","--file",action = "store",type="string",dest = "fileName",help="no any help")
<Option at 0x2bdb888: -f/--file>
>>> fakeArgs = ['-f','file.txt']
>>> options, args = parser.parse_args(fakeArgs)
>>> options.fileName
'file.txt'
>>> parser.print_help()
Usage: myprog[ -f <filename>][-s <xyz>] arg1[,arg2..]
Options:
-h, --help show this help message and exit #此两行根据option自动生成，比较智能额~~
-f FILENAME, --file=FILENAME
no any help #这是我定义的帮助信息(呵呵，不太友好~~)
>>> parser.print_usage()
Usage: myprog[ -f <filename>][-s <xyz>] arg1[,arg2..] #这是类的usage信息~~很逼真，有木有？
>>>
上述是介绍基本的语法，下面举两个例子，一个是网上找的一个模拟命令行的参数的例子，另一个是“真实”的例子~~~
Example1:
from optparse import OptionParser
usage = "myprog[ -f <filename>][-s <xyz>] arg1[,arg2..]"
optParser = OptionParser(usage)
optParser.add_option("-f","--file",action = "store",type="string",dest = "fileName")
ooptParser.add_option("-v","--vison", action="store_false", dest="verbose",default='None',
help="make lots of noise [default]")
fakeArgs = ['-f','file.txt','-v','good luck to you', 'arg2', 'arge']
options, args = optParser.parse_args(fakeArgs)
print options.fileName
print options.verbose
print options
print args
print optParser.print_help()
运行结果是：
file.txt
False
{'verbose': False, 'fileName': 'file.txt'}
['this is some what', 'arg2', 'arge']
Usage: myprog[ -f <filename>][-s <xyz>] arg1[,arg2..]
Options:
-h, --help show this help message and exit
-f FILENAME, --file=FILENAME
-v, --vison make lots of noise [default]
Example2:
一个简单的例子，就是将给脚本传选项n时，则输出的是n的参数的值，否则给出默认值（脚本保存在E盘）：
from optparse import OptionParser
optParser = OptionParser()
optParser.add_option("-n","--number",action = "store",type="int",dest = "intNumber")
