我正在学习 A Bite of Python 这本书。输入书上的例子后
import os
import time
# 1. The files and directories to be backed up are
# specified in a list.
# Example on Windows:
# source = ['"C:\\MY Documents"', 'C:\\Code']
# Example on Mac OS X and Linux:
source = ['/home/username/Downloads/books']
# Notice we had to use double quotes inside the string
# for names with spaces in it.
# 2. The backup must be stored in a
# main backup directory
# Example on Windows:
# target_dir = 'E:\\Backup'
# Example on Mac OS X and Linux:
target_dir = '/home/username/Downloads/backup'
# Remember to change this to which folder you will be using
# 3. The files are backed up into a zip file.
# 4. The name of the zip archive is the current date and time
target = target_dir + os.sep + \
time.strftime('%Y%m%d%H%M%S') + '.zip'
# Create target directory if it is not present
if not os.path.exists(target_dir):
os.mkdir(target_dir) # make directory
# 5. We use the zip commond to put the files in a zip archive
zip_command = "zip - r {0} {1}".format(target, ' '.join(source))
# Run the backup
print "Zip command is:"
print zip_command
print "Running:"
if os.system(zip_command) == 0:
print 'Successful backup to', target
else:
print 'Backup FALIED'
我收到一条消息 zip 错误:命令参数无效(无法将 zip 文件写入终端)
我无法弄清楚哪里出了问题,我在本书中输入了相同的代码。
有谁知道为什么会这样吗?
最佳答案
问题出在您创建的 zip
命令中,-
和 r
之间有一个额外的空格。示例 -
zip_command = "zip - r {0} {1}".format(target, ' '.join(source))
^
Notice the extra space
-
和r
之间不能有空格。示例 -
zip_command = "zip -r {0} {1}".format(target, ' '.join(source))
此外,我想建议,最好使用 subprocess.call()
而不是 os.system
,为它提供一个参数列表命令。示例 -
import subprocess
zip_command = ['zip','-r',target]
for s in source:
zip_command.append(s)
subprocess.call(zip_command)
这样会更容易看到错误。
关于python - 压缩错误 : Invalid command arguments (cannot write zip file to terminal),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32302705/