[ Source: frozenlist ]
Package: python3-frozenlist (1.3.3-1 and others)
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- Homepage [github.com]
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list-like structure which implements collections.abc.MutableSequence
`frozenlist.FrozenList` is a list-like structure which implements `collections.abc.MutableSequence`. The list is mutable until `FrozenList.freeze` is called, after which list modifications raise `RuntimeError`:
>>> from frozenlist import FrozenList >>> fl = FrozenList([17, 42]) >>> fl.append('spam') >>> fl.append('Vikings') >>> fl <FrozenList(frozen=False, [17, 42, 'spam', 'Vikings'])> >>> fl.freeze() >>> fl <FrozenList(frozen=True, [17, 42, 'spam', 'Vikings'])> >>> fl.frozen True >>> fl.append("Monty") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "frozenlist/_frozenlist.pyx", line 97, in frozenlist._frozenlist.FrozenList.append self._check_frozen() File "frozenlist/_frozenlist.pyx", line 19, in frozenlist._frozenlist.FrozenList._check_frozen raise RuntimeError("Cannot modify frozen list.") RuntimeError: Cannot modify frozen list.
FrozenList is also hashable, but only when frozen. Otherwise it also throws a RuntimeError:
>>> fl = FrozenList([17, 42, 'spam']) >>> hash(fl) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "frozenlist/_frozenlist.pyx", line 111, in frozenlist._frozenlist.FrozenList.__hash__ raise RuntimeError("Cannot hash unfrozen list.") RuntimeError: Cannot hash unfrozen list. >>> fl.freeze() >>> hash(fl) 3713081631934410656 >>> dictionary = {fl: 'Vikings'} # frozen fl can be a dict key >>> dictionary {<FrozenList(frozen=True, [1, 2])>: 'Vikings'}
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Download python3-frozenlist
Architecture | Version | Package Size | Installed Size | Files |
---|---|---|---|---|
amd64 | 1.3.3-1+b1 | 29.3 kB | 112.0 kB | [list of files] |
arm64 | 1.3.3-1+b1 | 27.4 kB | 112.0 kB | [list of files] |
armel | 1.3.3-1+b1 | 26.1 kB | 97.0 kB | [list of files] |
armhf | 1.3.3-1+b1 | 26.2 kB | 81.0 kB | [list of files] |
i386 | 1.3.3-1+b1 | 30.4 kB | 109.0 kB | [list of files] |
mips64el | 1.3.3-1+b1 | 26.2 kB | 114.0 kB | [list of files] |
mipsel | 1.3.3-1+b1 | 25.8 kB | 111.0 kB | [list of files] |
ppc64el | 1.3.3-1+b1 | 29.9 kB | 176.0 kB | [list of files] |
s390x | 1.3.3-1+b1 | 27.3 kB | 108.0 kB | [list of files] |