This piece works well:
srcname = ur"bnc-words.csv"
dstname = ur"bnc-words.sqlite"
convert_dict(dstname, srcname)
Differ from the file stardict.csv which was extracted from stardict.7z:
srcname = ur"stardict.csv"
dstname = ur"stardict.sqlite"
convert_dict(dstname, srcname)

thrown an MemoryError:

thrown same error when running a command-line,:

This piece works well:
Differ from the file
stardict.csvwhich was extracted fromstardict.7z:thrown an
MemoryError:thrown same error when running a command-line,: