cbitmap

cbitmap

A C-based bitmap implementation.

Install

pip install cbitmap

Basic Usage

import

from cbitmap import Bitmap

init a bitmap

# pass a number to init a bitmap
size = 100
b = Bitmap(size)

# or load a bitmap from disk
path = '/path/data'
b = Bitmap.load(path)

set

b = Bitmap(100)
b.set(10)

get

b = Bitmap(100)
b.set(10)
print(b.get(10))  # True
print(b.get(1))   # False
print(b.get(100000)) # False

delete

b = Bitmap(100)
b.set(10)
print(b.get(10))  # True
b.delete(10)
print(b.get(10))  # False

set kmer

b = b = Bitmap((1<< 32) - 1)
seq = 'AAcgagtcatcgatgcAAcgagtcatcgatgctagtcgta'.upper()
b.set_kmers(seq, 16)

Persistence

b = Bitmap(1000)
path = '/path/data'
b.dump(path)

b = Bitmap().load(path)
len(b) == 1000  # True