(CkPython) Remove an Entry from an Existing ZIP Using DeleteEntry

This example demonstrates how to use the DeleteEntry method to remove a file from an existing ZIP archive.

The example:

• Creates a ZIP archive containing three text files
• Opens the ZIP archive for modification
• Finds and deletes one entry
• Writes the modified ZIP archive to a new filename

Suppose the original ZIP archive contains:

a.txt
b.txt
c.txt

After deleting b.txt, the modified ZIP archive contains:

a.txt
c.txt

The entry is removed only from the in-memory ZIP object until a Write* method is called.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

success = False

success = False

# ------------------------------------------------------------
# First create a ZIP archive containing three text files.

zip = chilkat.CkZip()

success = zip.NewZip("original.zip")
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

charset = "utf-8"

success = zip.AddString("a.txt","Contents of file A",charset)
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

success = zip.AddString("b.txt","Contents of file B",charset)
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

success = zip.AddString("c.txt","Contents of file C",charset)
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

# Write the ZIP archive to disk.
# 
# The ZIP now contains:
# 
#     a.txt
#     b.txt
#     c.txt
# 
success = zip.WriteZipAndClose()
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

# ------------------------------------------------------------
# Open the existing ZIP archive for modification.

zip2 = chilkat.CkZip()

success = zip2.OpenZip("original.zip")
if (success == False):
    print(zip2.lastErrorText())
    sys.exit()

# Find the entry named "b.txt".
entry = chilkat.CkZipEntry()

success = zip2.EntryOf("b.txt",entry)
if (success == False):
    print(zip2.lastErrorText())
    sys.exit()

# Remove the entry from the in-memory ZIP object.
# 
# At this point, the original ZIP file on disk is unchanged.
# The deletion takes effect only after WriteZip or
# WriteZipAndClose is called.
success = zip2.DeleteEntry(entry)
if (success == False):
    print(zip2.lastErrorText())
    sys.exit()

# Write the modified ZIP archive to a new file.
zip2.put_FileName("modified.zip")

success = zip2.WriteZipAndClose()
if (success == False):
    print(zip2.lastErrorText())
    sys.exit()

# The modified ZIP now contains:
# 
#     a.txt
#     c.txt
# 

print("ZIP archive updated successfully.")