[python] 我的第一个python脚本

很丑陋，但是是我写的第一个Python程序。

    想学习下python，于是将python.cn上的邮件列表存档下载下来，想用zcat将它们合并成一个文件，以便用mutt来观看存档，结果发现文件名是类似于2004-September.txt.gz这种结构，如果强行将它们合并的话，时间顺序就会不正确，应为这种文件名不会按照正确的时间来排序。

    于是想到将月份由名称改成数字，这样可以解决文件名排序问题，昨天才看python，但是正好动一下手，解决这个"实际"问题 :-)

    再次申明：很丑陋，但是完成了我的"实际需求"

• 
  
  #!/usr/bin/python
  # coding: utf-8
  # filename name_convert.py
  
   import sys, os, string, re
  
  def monthConvert(name):
      """ monthConvert:Convert full month name to number.
  
      Return a month as a decimal number
      if Param is not a full month name, then return None """
      month = {"January": "01",\
              " February":"02",\ 
              "March":"03 ",\
              "April" :"04",\
              " May":"05",\
               "June":"06 ",\
              "July": "07",\
              " August":"08",\
               "September":"09 ",\
              "October" :"10",\
              " November":"11",\ 
              "December":"12 "}
      name = name.capitalize()
      try:
          if month[name]:
               return month[name]
      except:
          #print monthConvert.__doc__
          return
  
   def convertName(filename):
      """convertName: Convert full month name in filename to number. 
  
      Return new filename, month name is replaced by month number
      if file name is not like -monthname.txt.gz, then return None """
      if re.search('.txt.gz' ,filename):
          newName = None
          m = re.findall('-[a-zA-Z]+',filename)
           for j in m:
              monthName=j.strip('-')
              monthNumber = monthConvert(monthName) 
              if monthNumber != None:
                  if newName != None:
                      newName = newName.replace(monthName,monthNumber) 
                  else:
                      newName = filename.replace(monthName,monthNumber)
          return newName
  
   if __name__ == "__main__":
      for i  in os.listdir('.'):
          newName = convertName(i)
          if  newName != None:
              os.rename(i,newName)