zipimport — 从ZIP归档中国年加载Python代码

Example

# zipimport_make_example.py
import sys
import zipfile

if __name__ == '__main__':
    zf = zipfile.PyZipFile('zipimport_example.zip', mode='w')
    try:
        zf.writepy('.')
        zf.write('zipimport_get_source.py')
        zf.write('example_package/README.txt')
    finally:
        zf.close()
    for name in zf.namelist():
        print(name)

Finding a Module

# zipimport_find_module.py
import zipimport

importer = zipimport.zipimporter('zipimport_example.zip')

for module_name in ['zipimport_find_module', 'not_there']:
    print(module_name, ':', importer.find_module(module_name))

Accessing Code

# zipimport_get_code.py
import zipimport

importer = zipimport.zipimporter('zipimport_example.zip')
code = importer.get_code('zipimport_get_code')
print(code)

# zipimport_load_module.py
import zipimport

importer = zipimport.zipimporter('zipimport_example.zip')
module = importer.load_module('zipimport_get_code')
print('Name   :', module.__name__)
print('Loader :', module.__loader__)
print('Code   :', module.code)

Source

# zipimport_get_source.py
import zipimport

modules = [
    'zipimport_get_code',
    'zipimport_get_source',
]

importer = zipimport.zipimporter('zipimport_example.zip')
for module_name in modules:
    source = importer.get_source(module_name)
    print('=' * 80)
    print(module_name)
    print('=' * 80)
    print(source)
    print()

Packages

# zipimport_is_package.py
import zipimport

importer = zipimport.zipimporter('zipimport_example.zip')
for name in ['zipimport_is_package', 'example_package']:
    print(name, importer.is_package(name))

Data

# zipimport_get_data_nozip.py
import os
import example_package

# Find the directory containing the imported
# package and build the data filename from it.
pkg_dir = os.path.dirname(example_package.__file__)
data_filename = os.path.join(pkg_dir, 'README.txt')

# Read the file and show its contents.
print(data_filename, ':')
print(open(data_filename, 'r').read())

# zipimport_get_data_zip.py
import sys
sys.path.insert(0, 'zipimport_example.zip')

import os
import example_package
print(example_package.__file__)
data_filename = os.path.join(
    os.path.dirname(example_package.__file__),
    'README.txt',
)
print(data_filename, ':')
print(open(data_filename, 'rt').read())

# zipimport_get_data.py
import sys
sys.path.insert(0, 'zipimport_example.zip')

import os
import example_package
print(example_package.__file__)
data = example_package.__loader__.get_data(
    'example_package/README.txt')
print(data.decode('utf-8'))