原创 [python]Duplicate files v1p0

 2009-1-23 17:51  1899 8 8 分类: 软件与OS

说明：这个程序作用是复制一个文件，并且以指定的名字另存这个文件到当前目录。
如果文件不存在，会有错误信息。源文件下载https://static.assets-stash.eet-china.com/album/old-resources/2009/1/23/72228fe8-51d5-4c03-87bb-6064aeb0c6ed.zip
#------------------------------------------------------------------------------
# Edit by Long Yang, Python Neophyte
import re
import sys
#1. read the name of input file by following command:
#   [file]         [file to be duplicated to a new file with new name]
#   change_name.py word.txt
#2. A new file named with word_xxx.yyy to be created
#3. Copy old file to new file.
old_name = sys.argv[1]
try:
    old_file = open(old_name)
except IOError:
    print("No such file or directory: '%s'"%(old_name))
else:
    old_ext = re.findall('\.\w*',old_name)
    new_ext = input('Enter the new file format:')
    new_name = re.sub(old_ext[0], new_ext, old_name)
    new_file = open(new_name,'w')
    for line in old_file:
        new_line = line
        for words in new_line:
            new_file.write(words)
    old_file.close()
    new_file.close()
#--------------------------------------------------------------------------
运行结果