grelu.io.genome

Functions for loading genomes and related annotation files

Functions

read_sizes(→ pandas.DataFrame)	Read the chromosome sizes file for a genome and return a
get_genome(→ genomepy.Genome)	Install a genome from genomepy and load it as a Genome object
read_gtf(→ pandas.DataFrame)	Install a genome annotation from genomepy and load it as a dataframe.

Module Contents

grelu.io.genome.read_sizes(genome: str = 'hg38') → pandas.DataFrame

Read the chromosome sizes file for a genome and return a dataframe of chromosome names and sizes.

Parameters:

genome – Either a genome name to load from genomepy, or the path to a chromosome sizes file.

Returns:

A dataframe containing columns “chrom” (chromosome names) and “size” (chromosome size).

grelu.io.genome.get_genome(genome: str, **kwargs) → genomepy.Genome

Install a genome from genomepy and load it as a Genome object

Parameters:

• genome – Name of the genome to load from genomepy

• **kwargs – Additional arguments to pass to genomepy.install_genome

Returns:

Genome object

grelu.io.genome.read_gtf(genome: str, features: str | List[str] | None = None) → pandas.DataFrame

Install a genome annotation from genomepy and load it as a dataframe. UCSC tools may need to be installed for this to work. See vanheeringen-lab/genomepy for details.

Parameters:

• genome – Name of the genome to load from genomepy

• features – A list of specific features to return, such as “exon”, “CDS” or “transcript”

Returns:

GTF annotations