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example.py
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example.py
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import contextcache
# Define a private CacheContextVar to store the cached values.
# Don't touch this CacheContextVar from anywhere else!
# You need to define a separate CacheContextVar for every function for which
# you want to enable caching. Use `None` as the default.
_double_cache = contextcache.CacheContextVar("double_cache", default=None)
# Use the `enable_caching` decorator to enable context caching for `double`.
@contextcache.enable_caching(_double_cache)
def double(n: int) -> int:
print(f"Doubling {n}, working...")
return n * 2
# Without caching.
print("Without caching")
print(double(1))
print(double(1))
# With caching.
with contextcache.use_caching(double):
print("\nWith caching")
print(double(1))
print(double(1))
# Without caching, again.
print("\nWithout caching, again")
print(double(1))
print(double(1))