according to the book instruduction , i use shelve Module to write record to file.
i only write ten records like this:
name sex age
jim male 22
tom male 23
lucy female 21
.................................................others( about ten
records)
but i find the size of this file .oh my god , it is about 24k
the file is too large ! is it normal ?
i don't dare to think that if i has 1000 records , it will be a very
large file!
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