File: test_selftype.py

package info (click to toggle)
python3.9 3.9.2-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 102,508 kB
  • sloc: python: 606,145; ansic: 515,486; xml: 31,209; sh: 4,917; cpp: 3,781; makefile: 1,885; asm: 1,486; objc: 761; lisp: 502; pascal: 360; javascript: 177; csh: 11
file content (13 lines) | stat: -rw-r--r-- 293 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
 
# Reference cycles involving only the ob_type field are rather uncommon
# but possible.  Inspired by SF bug 1469629.

import gc

def leak():
    class T(type):
        pass
    class U(type, metaclass=T):
        pass
    U.__class__ = U
    del U
    gc.collect(); gc.collect(); gc.collect()