python zipfile module creates multiple files with same name

>>>
import zipfile
   >>>
   zip = zipfile.ZipFile('abc.zip', 'w') >>>
   zip.writestr('myfile', 'This is sample text') >>>
   zip.writestr('myfile', 'This is sample text') >>>
   zip.close()

ZipFile allows to add the same file to archive twice.I bet it is not
intended behavior
for many users who would like to either replace file
inside of archive or get runtime warning about duplicate file to be
added.http: //code.google.com/p/gvn/issues/detail?id=63

   from zipfile
import ZipFile

zt = ZipFile("ziptest.zip", "w")
zt.write("ziptest.py")
zt.write("ziptest.py")
zt.close()

I think a warning would be sensible here.The behavior is certainly not
what I would expect.

How about adding optional "replace=True"
attribute to the write method ?
   So that people who are not aware enough to adjust the code and handle
new warning could still get valid archives.

The mechanism
for throwing an error has been written, however
for the
case of a duplicated filename, it appears to have been deliberatly not
been used by the original author.:

   def _writecheck(self, zinfo):
   ""
"Check for errors before writing a file to the archive."
""
if zinfo.filename in self.NameToInfo:
   if self.debug: # Warning
for duplicate names
print "Duplicate name:", zinfo.filename
if self.mode not in ("w", "a"):
   raise RuntimeError, 'write() requires mode "w" or "a"'
   ...

   Putting a 'replace=True'
switch seems a little clumsy, it would be much
better to raise an error, or allow the user a way to globally control
what happens in this
case, i.e.overwrite the existing file or drop it.
Adding a global behaviour
switch seems to be the best way to preserve
backwards compatibility.

What do people think is the best way ?

   --Martin

a similar problem appears when the zip file contains two files as in: ['_test/tree.pl', '_test/'].

for ZipFile.extractall() when _test / tree.pl is extracted _test / is
created and the the extraction of _test / fails because OSError: [Errno
   17
] File exists: '_test/'

Still an issue
for Python 2.7

with ZipFile('spam.zip', 'w') as myzip:
   myzip.write('eggs.txt')

with ZipFile('spam.zip') as myzip:
   with myzip.open('eggs.txt') as myfile:
   print(myfile.read())

>>> Path(...).joinpath('child').joinpath('grandchild') >>>
   Path(...).joinpath('child', 'grandchild') >>>
   Path(...) / 'child' / 'grandchild'

>>> zf = PyZipFile('myprog.zip') >>>
   def notests(s):
   ...fn = os.path.basename(s)
   ...
   return (not(fn == 'test'
         or fn.startswith('test_'))) >>>
      zf.writepy('myprog', filterfunc = notests)

string.pyc # Top level name
test / __init__.pyc # Package directory
test / testall.pyc # Module test.testall
test / bogus / __init__.pyc # Subpackage directory
test / bogus / myfile.pyc # Submodule test.bogus.myfile

$ python - m zipfile - c monty.zip spam.txt eggs.txt

from zipfile
import ZipFile

# create a ZipFile object
zipObj = ZipFile('sample.zip', 'w')

# Add multiple files to the zip
zipObj.write('sample_file.csv')
zipObj.write('test_1.log')
zipObj.write('test_2.log')

# close the Zip File
zipObj.close()

# Create a ZipFile Object
with ZipFile('sample2.zip', 'w') as zipObj2:
   # Add multiple files to the zip
zipObj2.write('sample_file.csv')
zipObj2.write('test_1.log')
zipObj2.write('test_2.log')

from zipfile
import ZipFile
import os
from os.path
import basename

# Zip the files from given directory that matches the filter
def zipFilesInDir(dirName, zipFileName, filter):
   # create a ZipFile object
with ZipFile(zipFileName, 'w') as zipObj:
   # Iterate over all the files in directory
for folderName, subfolders, filenames in os.walk(dirName):
   for filename in filenames:
   if filter(filename):
   # create complete filepath of file in directory
filePath = os.path.join(folderName, filename)
# Add file to zip
zipObj.write(filePath, basename(filePath))

from zipfile
import ZipFile
import os
from os.path
import basename

# Zip the files from given directory that matches the filter
def zipFilesInDir(dirName, zipFileName, filter):
   # create a ZipFile object
with ZipFile(zipFileName, 'w') as zipObj:
   # Iterate over all the files in directory
for folderName, subfolders, filenames in os.walk(dirName):
   for filename in filenames:
   if filter(filename):
   # create complete filepath of file in directory
filePath = os.path.join(folderName, filename)
# Add file to zip
zipObj.write(filePath, basename(filePath))

def main():

   print('*** Create a zip file from multiple files  ')

#create a ZipFile object
zipObj = ZipFile('sample.zip', 'w')

# Add multiple files to the zip
zipObj.write('sample_file.csv')
zipObj.write('test_1.log')
zipObj.write('test_2.log')

# close the Zip File
zipObj.close()

print('*** Create a zip file from multiple files using with ')

# Create a ZipFile Object
with ZipFile('sample2.zip', 'w') as zipObj2:
   # Add multiple files to the zip
zipObj2.write('sample_file.csv')
zipObj2.write('test_1.log')
zipObj2.write('test_2.log')

# Name of the Directory to be zipped
dirName = 'sampleDir'

# create a ZipFile object
with ZipFile('sampleDir.zip', 'w') as zipObj:
   # Iterate over all the files in directory
for folderName, subfolders, filenames in os.walk(dirName):
   for filename in filenames:
   #create complete filepath of file in directory
filePath = os.path.join(folderName, filename)
# Add file to zip
zipObj.write(filePath)

print('*** Create a zip archive of only csv files form a directory ***')

zipFilesInDir('sampleDir', 'sampleDir2.zip', lambda name: 'csv' in name)

if __name__ == '__main__':
   main()

from zipfile
import ZipFile

with ZipFile(file_name, 'r') as zip:

zip.printdir()

zip.extractall()

zip.extract('python_files/python_wiki.txt')

data = zip.read(name_of_file_to_read)

def get_all_file_paths(directory):
   file_paths = []

for root, directories, files in os.walk(directory):
   for filename in files:
   filepath = os.path.join(root, filename)
file_paths.append(filepath)

return file_paths