Scalable Python and bottlenecks

Original article https://instagram-engineering.com/python-at-scale-strict-modules-c0bb9245c834 term description see import-time when imports are executed Sources of slowness import re from mywebframework import db, route VALID_NAME_RE = re.compile("^[a-zA-Z0-9]+$") @route('/') def home(): return "Hello World!" class Person(db.Model): name: str top level scope defines – regex compilation decorator with unknown behaviour class definition: runs code contained within base class may have...

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