I tried it soon and I didn't feel it's fast. So I investigated it with Python 3.7's new feature. In this article, I introduce the feature and how to use it. Startup time ≒ import time For example, execution time of pipenv -h is much larger than time to show help message. Generally speaking, when application starts, there are some startup process like loading environment variables or config files.
![How to speed up Python application startup time](https://cdn-ak-scissors.b.st-hatena.com/image/square/94657376c8687a3ac678a9dd555c115680d121fc/height=288;version=1;width=512/https%3A%2F%2Fres.cloudinary.com%2Fpracticaldev%2Fimage%2Ffetch%2Fs--RG_5UInO--%2Fc_imagga_scale%2Cf_auto%2Cfl_progressive%2Ch_500%2Cq_auto%2Cw_1000%2Fhttps%3A%2F%2Fcl.ly%2F0W1c1u1F3602%2FImage%2525202018-01-21%252520at%25252011.59.32%252520AM.png)