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eth-bloom-2.0.0
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مشاهده بیشترتوضیحات
Python implementation of the Ethereum Trie structure
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | eth-bloom-2.0.0 |
| نام | eth-bloom |
| نسخه کتابخانه | 2.0.0 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Piper Merriam |
| ایمیل نویسنده | pipermerriam@gmail.com |
| آدرس صفحه اصلی | https://github.com/ethereum/eth-bloom |
| آدرس اینترنتی | https://pypi.org/project/eth-bloom/ |
| مجوز | MIT |
# Ethereum Bloom Filter
[](https://circleci.com/gh/ethereum/eth-bloom)
[](https://badge.fury.io/py/eth-bloom)
[](https://pypi.python.org/pypi/eth-bloom)
A python implementation of the bloom filter used by Ethereum.
> This library and repository was previously located at https://github.com/pipermerriam/ethereum-bloom. It was transferred to the Ethereum foundation github in November 2017 and renamed to `eth-bloom`. The PyPi package was also renamed from `ethereum-bloom` to `eth-bloom.
For more information on what Ethereum Bloom Filters are see [here](what_is_eth-bloom.txt).
## Installation
```shell
$ pip install eth-bloom
```
## Development
```sh
pip install -e ".[dev]"
```
### Running the tests
You can run the tests with:
```sh
pytest tests
```
Or you can install `tox` to run the full test suite.
### Releasing
To release a new version:
```sh
make release bump={bumpversion}
```
#### How to bumpversion
The version format for this repo is `{major}.{minor}.{patch}` for stable, and
`{major}.{minor}.{patch}-{stage}.{devnum}` for unstable (`stage` can be alpha or beta).
To issue the next version in line, use bumpversion and specify which part to bump,
like `bumpversion minor` or `bumpversion devnum`.
If you are in a beta version, `bumpversion stage` will switch to a stable.
To issue an unstable version when the current version is stable, specify the
new version explicitly, like `bumpversion --new-version 4.0.0-alpha.1 devnum`
## Usage
The `BloomFilter` object
```python
>>> from eth_bloom import BloomFilter
>>> b = BloomFilter()
>>> b'a value' in b # check whether a value is present
False
>>> b.add(b'a value') # add a single value
>>> b'a value' in b
True
>>> int(b) # cast to an integer
3458628712844765018311492773359360516229024449585949240367644166080576879632652362184119765613545163153674691520749911733485693171622325900647078772681584616740134230153806267998022370194756399579977294154062696916779055028045657302214591620589415314367270329881298073237757853875497241510733954508399863880080986777555986663988492288946856978031023631618215522505971170427986911575695114157059398791122395379400594948096
>>> bin(b) # cast to a binary string
'0b100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
```
You can also add an iterable of items to a bloom filter.
```python
>>> b = BloomFilter()
>>> b'value-a' in b
False
>>> b'value-b' in b
False
>>> b.extend([b'value-a', b'value-b'])
>>> b'value-a' in b
True
>>> b'value-b' in b
True
```
You can initialize a bloom filter from an iterable of byte strings.
```python
>>> b = BloomFilter.from_iterable([b'value-a', b'value-b']) # initialize from an iterable of values.
>>> b'value-a' in b
True
>>> b'value-b' in b
True
```
You can initialize a bloom filter from the integer representation of the bloom bits.
```python
>>> b = BloomFilter(3458628712844765018311492773359360516229024449585949240367644166080576879632652362184119765613545163153674691520749911733485693171622325900647078772681584616740134230153806267998022370194756399579977294154062696916779055028045657302214591620589415314367270329881298073237757853875497241510733954508399863880080986777555986663988492288946856978031023631618215522505971170427986911575695114157059398791122395379400594948096)
>>> b'a value' in b
True
```
You can also merge bloom filters
```python
>>> from eth_bloom import BloomFilter
>>> b1 = BloomFilter()
>>> b2 = BloomFilter()
>>> b1.add(b'a')
>>> b1.add(b'common')
>>> b2.add(b'b')
>>> b2.add(b'common')
>>> b'a' in b1
True
>>> b'b' in b1
False
>>> b'common' in b1
True
>>> b'a' in b2
False
>>> b'b' in b2
True
>>> b'common' in b2
True
>>> b3 = b1 + b2 # using addition
>>> b'a' in b3
True
>>> b'b' in b3
True
>>> b'common' in b3
True
>>> b4 = b1 | b2 # or using bitwise or
>>> b'a' in b4
True
>>> b'b' in b4
True
>>> b'common' in b4
True
>>> b1 |= b2 # or using in-place operations (works with += too)
>>> b'a' in b1
True
>>> b'b' in b1
True
>>> b'common' in b1
True
```
نیازمندی
| مقدار | نام |
|---|---|
| >=0.4.0 | eth-hash[pycryptodome] |
| - | bumpversion |
| - | wheel |
| - | bumpversion |
| - | wheel |
| - | twine |
| - | build |
| >=6.2.5 | pytest |
| >=3.31.2 | hypothesis |
| >=2.6.0 | tox |
| >=3.8.3 | flake8 |
| ==0.910 | mypy |
| >=4.2.15 | isort |
| >=22.1.0 | black |
| >=3.8.3 | flake8 |
| ==0.910 | mypy |
| >=4.2.15 | isort |
| >=22.1.0 | black |
| >=6.2.5 | pytest |
| >=3.31.2 | hypothesis |
| >=2.6.0 | tox |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.7, <4 | Python |
نحوه نصب
نصب پکیج whl eth-bloom-2.0.0:
pip install eth-bloom-2.0.0.whl
نصب پکیج tar.gz eth-bloom-2.0.0:
pip install eth-bloom-2.0.0.tar.gz