Python的shutil模块中文件的复制操作函数详解

 >> import shutil
 >> import os
 >> os.chdir('C:\\')
 >> shutil.copy('C:\\spam.txt', 'C:\\delicious')
 'C:\\delicious\\spam.txt'
 >> shutil.copy('eggs.txt', 'C:\\delicious\\eggs2.txt')
 'C:\\delicious\\eggs2.txt'

from shutil import *
from glob import glob
print 'BEFORE:', glob('huanhuan.*')
copyfile('huanhuan.txt', 'huanhuan.txt.copy')
print 'AFTER:', glob('huanhuan.*')

>>> ================================ RESTART ================================
>>> 
BEFORE: ['huanhuan.txt']
AFTER: ['huanhuan.txt', 'huanhuan.txt.copy']

from shutil import *
import os
from StringIO import StringIO
import sys
class VerboseStringIO(StringIO):
  def read(self, n=-1):
    next = StringIO.read(self, n)
    print 'read(%d) bytes' % n
    return next
lorem_ipsum = '''This makes the dependency explicit, limits the scope to the current file and provides faster access to the bit.* functions, too.
It's good programming practice not to rely on the global variable bit being set (assuming some other part of your application has already loaded the module).
The require function ensures the module is only loaded once, in any case.'''
print 'Defalut:'
input = VerboseStringIO(lorem_ipsum)
output = StringIO()
copyfileobj(input, output)
print
print 'All at once:'
input = VerboseStringIO(lorem_ipsum)
output = StringIO()
copyfileobj(input, output, -1)
print
print 'Blocks of 256:'
input = VerboseStringIO(lorem_ipsum)
output = StringIO()
copyfileobj(input, output, 256)

>>> ================================ RESTART ================================
>>> 
Defalut:
read(16384) bytes
read(16384) bytes

All at once:
read(-1) bytes
read(-1) bytes

Blocks of 256:
read(256) bytes
read(256) bytes
read(256) bytes

from shutil import *
import os
dir = os.getcwd()
if not os.path.exists('%s\\example' % dir):
  os.mkdir('%s\\example' % dir)
print 'BEFORE:', os.listdir('example')
copy('huanhuan.txt', 'example')
print 'AFTER:', os.listdir('example')

>>> ================================ RESTART ================================
>>> 
BEFORE: []
AFTER: ['huanhuan.txt']

from shutil import *
import os
import time
dir = os.getcwd()
if not os.path.exists('%s\\example' % dir):
  os.mkdir('%s\\example' % dir)
  
def show_file_info(filename):
  stat_info = os.stat(filename)
  print '\tMode  :', stat_info.st_mode
  print '\tCreated :', time.ctime(stat_info.st_ctime)
  print '\tAccessed:', time.ctime(stat_info.st_atime)
  print '\tModified:', time.ctime(stat_info.st_mtime)

print 'SOURCE:'
show_file_info('huanhuan.txt')
copy2('huanhuan.txt', 'example')
print 'DEST:'
show_file_info('%s\\example\\huanhuan.txt' % dir)

>>> ================================ RESTART ================================
>>> 
SOURCE:
  Mode  : 33206
  Created : Thu Feb 13 17:42:46 2014
  Accessed: Thu Feb 13 17:42:46 2014
  Modified: Thu Feb 13 17:42:46 2014
DEST:
  Mode  : 33206
  Created : Thu Feb 13 18:29:14 2014
  Accessed: Thu Feb 13 17:42:46 2014
  Modified: Thu Feb 13 17:42:46 2014

from shutil import *
import os
from commands import *
with open('file_to_change.txt', 'wt') as f:
  f.write('i love you')
os.chmod('file_to_change.txt', 0444)
print 'BEFORE:'
print getstatus('file_to_change.txt')
copymode('shutil_copymode.py', 'file_to_change.txt')
print 'AFTER:'
print getstatus('file_to_change.txt')

from shutil import *
import os
import time
def show_file_info(filename):
  stat_info = os.stat(filename)
  print '\tMode    :', stat_info.st_mode
  print '\tCreated  :', time.ctime(stat_info.st_ctime)
  print '\tAccessed  :', time.ctime(stat_info.st_atime)
  print '\tModified  :', time.ctime(stat_info.st_mtime)
with open('file_to_change.txt', 'wt') as f:
  f.write('i love you')
os.chmod('file_to_Change.txt', 0444)
print 'BEFORE:'
show_file_info('file_to_Change.txt')
copystat('shutil_copystat.py', 'file_to_Change.txt')
print 'AFTER:'
show_file_info('file_to_Change.txt')

from shutil import *
from commands import *
print 'BEFORE:'
print getoutput('ls -rlast /tmp/example')
copytree('../shutil', '/tmp/example')
print '\nAFTER:'
print getoutput('ls -rlast /tmp/example')

from shutil import *
from commands import *
print 'BEFORE:'
print getoutput('ls -rlast /tmp/example')
rmtree('/tmp/example')
print '\nAFTER:'
print getoutput('ls -rlast /tmp/example')

from shutil import *
from glob import glob
with open('example.txt', 'wt') as f:
  f.write('i love you')
print 'BEFORE: ', glob('example*')
move('example.txt', 'example.out')
print 'AFTER: ',glob('example*')

>>> ================================ RESTART ================================
>>> 
BEFORE: ['example', 'example.txt']
AFTER: ['example', 'example.out']