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-rw-r--r--Lib/tempfile.py22
1 files changed, 12 insertions, 10 deletions
diff --git a/Lib/tempfile.py b/Lib/tempfile.py
index 1bc5c71..770f72c 100644
--- a/Lib/tempfile.py
+++ b/Lib/tempfile.py
@@ -129,22 +129,24 @@ class _RandomNameSequence:
_RandomNameSequence is an iterator."""
- def __init__(self, characters="abcdefghijklmnopqrstuvwxyz0123456789_", length=8, rng=None):
- if rng is None:
- rng = _Random()
- if hasattr(_os, "fork"):
- # prevent same state after fork
- _os.register_at_fork(after_in_child=rng.seed)
- self.rng = rng
- self.characters = characters
- self.length = length
+ characters = "abcdefghijklmnopqrstuvwxyz0123456789_"
+
+ @property
+ def rng(self):
+ cur_pid = _os.getpid()
+ if cur_pid != getattr(self, '_rng_pid', None):
+ self._rng = _Random()
+ self._rng_pid = cur_pid
+ return self._rng
def __iter__(self):
return self
def __next__(self):
c = self.characters
- return ''.join(self.rng.choices(c, k=self.length))
+ choose = self.rng.choice
+ letters = [choose(c) for dummy in range(8)]
+ return ''.join(letters)
def _candidate_tempdir_list():
"""Generate a list of candidate temporary directories which