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support mutable parameters #3

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support mutable parameters #3

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5 changes: 3 additions & 2 deletions pyfscache/fscache.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
import time
import base64
import inspect
import copy

__all__ = ["CacheError", "FSCache", "make_digest",
"auto_cache_function", "cache_function", "to_seconds"]
Expand Down Expand Up @@ -425,7 +426,7 @@ def auto_cache_function(f, cache):
except (AttributeError, TypeError):
fid = (f.__name__, repr(type(f)))
def _f(*args, **kwargs):
k = (fid, args, kwargs)
k = copy.deepcopy((fid, args, kwargs))
if k in cache:
result = cache[k]
else:
Expand All @@ -447,7 +448,7 @@ def cache_function(f, keyer, cache):
It is best to have a unique `keyer` for every function.
"""
def _f(*args, **kwargs):
k = keyer(*args, **kwargs)
k = copy.deepcopy(keyer(*args, **kwargs))
if k in cache:
result = cache[k]
else:
Expand Down