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把你第三段的test_shelve = shelve.open('file')换成test_shelve = shelve.open('file', writeback = True)
test_shelve = shelve.open('file')
test_shelve = shelve.open('file', writeback = True)
https://docs.python.org/2.7/library/shelve.html?highlight=writeback
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把你第三段的
test_shelve = shelve.open('file')换成test_shelve = shelve.open('file', writeback = True)https://docs.python.org/2.7/library/shelve.html?highlight=writeback