python之optparse模块

测试例子

#!/usr/bin/env python2.7
import sys
import os

from optparse import OptionParser

def parse_options():
    parser = OptionParser()
    parser.add_option("-u", "--user", dest="user", default="", help="MySQL user")
    parser.add_option("-H", "--host", dest="host", default="localhost", help="MySQL host (default: localhost)")
    parser.add_option("-p", "--password", dest="password", default="", help="MySQL password")
    parser.add_option("--ask-pass", action="store_true", dest="prompt_password", help="Prompt for password")
    parser.add_option("-P", "--port", dest="port", type="int", default="3306", help="TCP/IP port (default: 3306)")
    parser.add_option("-S", "--socket", dest="socket", default="/var/run/mysqld/mysql.sock", help="MySQL socket file. Only   
applies when host is localhost")
    parser.add_option("", "--defaults-file", dest="defaults_file", default="", help="Read from MySQL configuration file.     
Overrides all other options")
    parser.add_option("-d", "--database", dest="database", help="Database name (required unless table is fully qualified)")
    parser.add_option("-t", "--table", dest="table", help="Table to alter (optionally fully qualified)")
    parser.add_option("-g", "--ghost", dest="ghost", help="Table name to serve as ghost. This table will be created and      
synchronized with the original table")
    parser.add_option("-a", "--alter", dest="alter_statement", help="Comma delimited ALTER statement details, excluding the  
'ALTER TABLE t' itself")
    parser.add_option("-c", "--chunk-size", dest="chunk_size", type="int", default=1000, help="Number of rows to act on in   
chunks. Default: 1000")
    parser.add_option("-l", "--lock-chunks", action="store_true", dest="lock_chunks", default=False, help="Use LOCK TABLES   
for each chunk")
    parser.add_option("-N", "--skip-binlog", dest="skip_binlog", action="store_true", default=False, help="Disable binary    
logging")
    parser.add_option("-r", "--max-lock-retries", type="int", dest="max_lock_retries", default="10", help="Maximum times to  
retry on deadlock or lock_wait_timeout. (default: 10; 0 is unlimited)")
    parser.add_option("--skip-delete-pass", dest="skip_delete_pass", action="store_true", default=False, help="Do not        
execute the DELETE data pass")
    parser.add_option("--sleep", dest="sleep_millis", type="int", default=0, help="Number of milliseconds to sleep between   
chunks. Default: 0")
    parser.add_option("", "--sleep-ratio", dest="sleep_ratio", type="float", default=0, help="Ratio of sleep time to         
execution time. Default: 0")
    parser.add_option("--cleanup", dest="cleanup", action="store_true", default=False, help="Remove custom triggers, ghost   
table from possible previous runs")
    parser.add_option("-v", "--verbose", dest="verbose", action="store_true", default=True, help="Print user friendly        
messages")
    parser.add_option("-q", "--quiet", dest="verbose", action="store_false", help="Quiet mode, do not verbose")
    return parser.parse_args()

(options,args) = parse_options()

print options,args

Help的截图：

参数值的获取：

print options,args