Why is starting python under Windows 10 so incredibly slow, and how to speed this up

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I've been using Python for 20 years on Windows, Linux and, lately, on OsX. However since MS forced me to switch from Windows 8 to Windows 10, the time required for the first run of a Python program has gone from a fraction of a second to 5-10 seconds on my 32 GB Quadcore.

Anyone knows what causes this and how to make it fast again?

startup windows python
1 Answers

For me the time waster is all the imports. If you have any packages that are installed with -e they are especially slow to load. To measure the time, you can do this...

import time
t0=time.time()

# put all your imports here
import numpy as np 
import logging
import mystuff

print('IMPORT TIME =', time.time()-t0)
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