(CkPython) Find a ZIP Entry by EntryID Using EntryById

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This example demonstrates how to use the EntryById method to retrieve a ZIP entry using its unique EntryID.

Each ZipEntry object has an EntryID property that uniquely identifies the entry within the currently open ZIP object.

This is useful when:

• An application stores EntryID values for later use
• ZIP entries need to be retrieved without searching by filename
• Multiple entries may have similar names or paths

The example:

• Opens a ZIP archive
• Retrieves an entry using EntryAt
• Saves the entry's EntryID
• Uses EntryById to retrieve the same entry later

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

# Open an existing ZIP archive.
zip = chilkat.CkZip()

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

# Retrieve the first entry in the ZIP archive.
entry = chilkat.CkZipEntry()

success = zip.EntryAt(0,entry)
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

print("Original entry:")
print("  FileName: " + entry.fileName())
print("  EntryID: " + str(entry.get_EntryID()))
print("")

# Save the EntryID for later use.
entryId = entry.get_EntryID()

# Create another ZipEntry object.
entry2 = chilkat.CkZipEntry()

# Retrieve the same entry using EntryById.
success = zip.EntryById(entryId,entry2)
if (success == False):
    print(zip.lastErrorText())
    sys.exit()

print("Entry retrieved by EntryID:")
print("  FileName: " + entry2.fileName())
print("  EntryID: " + str(entry2.get_EntryID()))
print("")

# The filenames and EntryID values should match.
zip.CloseZip()

print("Done.")