Improve: Reduce import time

[wannaphong]

Improve: reduce import time

[wannaphong]

PyThaiNLP v3.1.0

python -X importtime -c "from pythainlp.tokenize import word_tokenize" 2> wordcut-3.1.log

This patch

python -X importtime -c "from pythainlp.tokenize import word_tokenize" 2> wordcut-import2.log

[wannaphong]

wordcut-3.1.log
wordcut-import2.log

[coveralls]

Coverage increased (+0.05%) to 93.764% when pulling f3bc46e on improve-1 into 7975bc8 on dev.

[BLKSerene]

Well, delaying imports of optional dependencies of PyThaiNLP, like sentencepiece, pycrfsuite, and gensim, is fine (except Requests, which is a required dependency), but I think that delaying import statements of Python standard libraries, such as random, tarfile, and shutil, would make future maintenance work trickier, and would not impact much on the import speed?

[wannaphong]

Well, delaying imports of optional dependencies of PyThaiNLP, like sentencepiece, pycrfsuite, and gensim, is fine (except Requests, which is a required dependency), but I think that delaying import statements of Python standard libraries, such as random, tarfile, and shutil, would make future maintenance work trickier, and would not impact much on the import speed?

I think it isn't impact the future maintenance because It uses only few function and use few time (train Perceptron model, download file, unzip file).

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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