python tarfile模块基本使用
-
# work with a tarball compressed archive file (similar to zip)
-
# Python module tarfile is better and more flexible than zipfile
-
# it allows gzip and the even denser bzip2 compression
-
# tested with Python24 vegaseat 18jan2007
-
-
import
tarfile
-
-
str1 =
"If you want breakfast in bed, sleep in the kitchen."
-
str2 =
"Dinner is ready when the smoke alarm goes off."
-
str3 =
"How can I miss you if you won't go away?"
-
-
# write test file 1
-
fout =
open
(
"TarTest1.txt",
"w"
)
-
fout.
write
(str1
)
-
fout.
close
(
)
-
-
# write test file 2
-
fout =
open
(
"TarTest2.txt",
"w"
)
-
fout.
write
(str2
)
-
fout.
close
(
)
-
-
# write test file 3
-
fout =
open
(
"TarTest3.txt",
"w"
)
-
fout.
write
(str3
)
-
fout.
close
(
)
-
-
# pick your compression ...
-
# for uncompressed use file extension .tar and modifier "w"
-
# for gzip compressed use file extension .tar.gz and modifier "w:gz"
-
# for bzip2 super compressed use file extension .tar.bz2 and "w:bz2"
-
# use "w", "w:gz" or "w:bz2" for all file types, including binary files
-
tar =
tarfile.
open
(
"TarTest.tar.bz2",
"w:bz2"
)
-
-
# turn the three test files into a tar archive
-
for name
in
[
"TarTest1.txt",
"TarTest2.txt",
"TarTest3.txt"
]:
-
tar.
add
(name
)
-
tar.
close
(
)
-
-
print
'-'*
40
-
-
# test if the file is a valid tar file
-
tfilename =
"TarTest.tar.bz2"
-
if
tarfile.
is_tarfile
(tfilename
):
-
print
"%s is a valid tar file" % tfilename
-
else:
-
print
"%s is not a valid tar file" % tfilename
-
-
print
'-'*
40
-
-
# read the tarfile you just wrote
-
tar =
tarfile.
open
(
"TarTest.tar.bz2",
"r:bz2"
)
-
file_list =
[
]
-
for
file
in tar:
-
# show filename and size (bytes)
-
print
"file %s has a size of %d bytes" %
(
file.
name,
file.
size
)
-
file_list.
append
(
file.
name
)
-
-
# another way to get the file list
-
file_list2 = tar.
getnames
(
)
-
-
print
'-'*
50
-
print file_list
-
print file_list2
-
print
'-'*
50
-
-
# pick one of the three files in the tar-archive (tarball)
-
filename = file_list
[
1
]
-
-
# decompress the particular file
-
data = tar.
extractfile
(filename
).
read
(
)
-
-
# if it's a text file, show contents
-
if filename.
endswith
(
".txt"
):
-
print
"Content of file %s in the tarball:" % filename
-
print data
-
-
# write the files out to new files
-
for fname
in tar.
getnames
(
):
-
# extract/decompress the data of each file
-
data = tar.
extractfile
(fname
).
read
(
)
-
# optionally change the filename
-
new_file =
"new_" + fname
-
print
"File %s written!" % new_file
-
# write the decompressed data to a file
-
fout =
open
(new_file,
"w"
)
-
fout.
write
(data
)
-
fout.
close
(
)
-
-
# done, close the tar file ...
-
tar.
close
(
)
-
# work with a tarball compressed archive file (similar to zip)
-
# Python module tarfile is better and more flexible than zipfile
-
# it allows gzip and the even denser bzip2 compression
-
# tested with Python24 vegaseat 18jan2007
-
-
import
tarfile
-
-
str1 =
"If you want breakfast in bed, sleep in the kitchen."
-
str2 =
"Dinner is ready when the smoke alarm goes off."
-
str3 =
"How can I miss you if you won't go away?"
-
-
# write test file 1
-
fout =
open
(
"TarTest1.txt",
"w"
)
-
fout.
write
(str1
)
-
fout.
close
(
)
-
-
# write test file 2
-
fout =
open
(
"TarTest2.txt",
"w"
)
-
fout.
write
(str2
)
-
fout.
close
(
)
-
-
# write test file 3
-
fout =
open
(
"TarTest3.txt",
"w"
)
-
fout.
write
(str3
)
-
fout.
close
(
)
-
-
# pick your compression ...
-
# for uncompressed use file extension .tar and modifier "w"
-
# for gzip compressed use file extension .tar.gz and modifier "w:gz"
-
# for bzip2 super compressed use file extension .tar.bz2 and "w:bz2"
-
# use "w", "w:gz" or "w:bz2" for all file types, including binary files
-
tar =
tarfile.
open
(
"TarTest.tar.bz2",
"w:bz2"
)
-
-
# turn the three test files into a tar archive
-
for name
in
[
"TarTest1.txt",
"TarTest2.txt",
"TarTest3.txt"
]:
-
tar.
add
(name
)
-
tar.
close
(
)
-
-
print
'-'*
40
-
-
# test if the file is a valid tar file
-
tfilename =
"TarTest.tar.bz2"
-
if
tarfile.
is_tarfile
(tfilename
):
-
print
"%s is a valid tar file" % tfilename
-
else:
-
print
"%s is not a valid tar file" % tfilename
-
-
print
'-'*
40
-
-
# read the tarfile you just wrote
-
tar =
tarfile.
open
(
"TarTest.tar.bz2",
"r:bz2"
)
-
file_list =
[
]
-
for
file
in tar:
-
# show filename and size (bytes)
-
print
"file %s has a size of %d bytes" %
(
file.
name,
file.
size
)
-
file_list.
append
(
file.
name
)
-
-
# another way to get the file list
-
file_list2 = tar.
getnames
(
)
-
-
print
'-'*
50
-
print file_list
-
print file_list2
-
print
'-'*
50
-
-
# pick one of the three files in the tar-archive (tarball)
-
filename = file_list
[
1
]
-
-
# decompress the particular file
-
data = tar.
extractfile
(filename
).
read
(
)
-
-
# if it's a text file, show contents
-
if filename.
endswith
(
".txt"
):
-
print
"Content of file %s in the tarball:" % filename
-
print data
-
-
# write the files out to new files
-
for fname
in tar.
getnames
(
):
-
# extract/decompress the data of each file
-
data = tar.
extractfile
(fname
).
read
(
)
-
# optionally change the filename
-
new_file =
"new_" + fname
-
print
"File %s written!" % new_file
-
# write the decompressed data to a file
-
fout =
open
(new_file,
"w"
)
-
fout.
write
(data
)
-
fout.
close
(
)
-
-
# done, close the tar file ...
-
tar.
close
(
)
# work with a tarball compressed archive file (similar to zip) # Python module tarfile is better and more flexible than zipfile # it allows gzip and the even denser bzip2 compression # tested with Python24 vegaseat 18jan2007 import tarfile str1 = "If you want breakfast in bed, sleep in the kitchen." str2 = "Dinner is ready when the smoke alarm goes off." str3 = "How can I miss you if you won't go away?" # write test file 1 fout = open("TarTest1.txt", "w") fout.write(str1) fout.close() # write test file 2 fout = open("TarTest2.txt", "w") fout.write(str2) fout.close() # write test file 3 fout = open("TarTest3.txt", "w") fout.write(str3) fout.close() # pick your compression ... # for uncompressed use file extension .tar and modifier "w" # for gzip compressed use file extension .tar.gz and modifier "w:gz" # for bzip2 super compressed use file extension .tar.bz2 and "w:bz2" # use "w", "w:gz" or "w:bz2" for all file types, including binary files tar = tarfile.open("TarTest.tar.bz2", "w:bz2") # turn the three test files into a tar archive for name in ["TarTest1.txt", "TarTest2.txt", "TarTest3.txt"]: tar.add(name) tar.close() print '-'*40 # test if the file is a valid tar file tfilename = "TarTest.tar.bz2" if tarfile.is_tarfile(tfilename): print "%s is a valid tar file" % tfilename else: print "%s is not a valid tar file" % tfilename print '-'*40 # read the tarfile you just wrote tar = tarfile.open("TarTest.tar.bz2", "r:bz2") file_list = [] for file in tar: # show filename and size (bytes) print "file %s has a size of %d bytes" % (file.name, file.size) file_list.append(file.name) # another way to get the file list file_list2 = tar.getnames() print '-'*50 print file_list print file_list2 print '-'*50 # pick one of the three files in the tar-archive (tarball) filename = file_list[1] # decompress the particular file data = tar.extractfile(filename).read() # if it's a text file, show contents if filename.endswith(".txt"): print "Content of file %s in the tarball:" % filename print data # write the files out to new files for fname in tar.getnames(): # extract/decompress the data of each file data = tar.extractfile(fname).read() # optionally change the filename new_file = "new_" + fname print "File %s written!" % new_file # write the decompressed data to a file fout = open(new_file, "w") fout.write(data) fout.close() # done, close the tar file ... tar.close()