(aws-cdk-lib): Slow Python import times

[pauldraper]

Describe the bug

import aws_cdk takes a long time.

Expected Behavior

I expected importing to take less than 2s.

Comparisons:

python -c 'import boto3' takes ~200ms.

node -e 'require("aws-cdk-lib")' takes ~850ms.

Current Behavior

python -c 'import aws_cdk' takes 5s.

Reproduction Steps

time python -c 'import aws_cdk'

real	0m5.290s
user	0m5.562s
sys	0m0.659s

Possible Solution

Remove the dozens of imports from __init__.py, most of which are unnecessary for most users.

Additional Information/Context

This makes even the simplest commands like cdk list bizarrely slow even for small projects.

CDK CLI Version

2.37.0

Framework Version

No response

Node.js Version

18

OS

Ubuntu 20.04

Language

Python

Language Version

Python 3.8

Other information

No response

[peterwoodworth]

Sorry about the length of time this takes,

Remove the dozens of imports from init.py, most of which are unnecessary for most users

Which imports do you think are unnecessary?

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[pauldraper]

More details here: aws/jsii#3389 (comment)

[peterwoodworth]

Thanks for linking this issue, this is a jsii issue so that existing issue will be the best place to track this. Thanks again

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[bafonso]

We are just now starting to use CDK v2 after years of using v1 and the workflow is abysmally slow. AWS-CDK developers really need to re-think if packaging everything makes sense. Almost half a year later and no solution in sight, we are now forced to re-consider using terraform. Sorry for venting but I wonder how this slowness is not problematic for most python developers, assuming there were enough testers involved during aws-cdk v2 development.