Created
June 15, 2012 01:28
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Gets unspliced gene data from Wormbase REST API, given a CSV file.
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import csv | |
import requests | |
import bs4 as bs | |
def wormbase_url(gene_id): | |
""" | |
Return the correct REST API URL, given the gene ID. | |
""" | |
url = "http://www.wormbase.org/rest/widget/cds/" + gene_id + "/sequences" | |
return url | |
def file_lines(file_name): | |
""" | |
Count the number of lines in a file. | |
""" | |
f = open(file_name) | |
return len(f.readlines()) | |
def parse_unspliced(html): | |
""" | |
Parse the raw HTML file for the unspliced gene data. | |
""" | |
soup = bs.BeautifulSoup(html) | |
content = soup.find(id="content") | |
return content.string.replace('\n', '') | |
def get_sequences(csv_name, output_name, error_name): | |
""" | |
From the CSV file, get the gene IDs and access the Wormbase REST API. | |
Write successful requests with the unspliced sequences to an output file. | |
Log the failed gene IDs to a separate file. | |
Keyword arguments: | |
csv_name -- the name of the CSV file to read from | |
output_name -- the name of the file with the unspliced gene data | |
error_name -- the name of the file that logs the unsuccessful requests | |
""" | |
num_genes = str(file_lines(csv_name)) | |
out_file = open(output_name, "w") | |
err_file = open(error_name, "w") | |
gene_reader = csv.reader(open(csv_name, 'rb')) | |
gene_count = 0 | |
failed_genes = [] | |
for row in gene_reader: | |
gene_id = row[0] | |
gene_count += 1 | |
gene_data = requests.get(wormbase_url(gene_id)) | |
if (gene_data.status_code == 200): | |
unspliced_gene = parse_unspliced(gene_data.text) | |
out_file.write(unspliced_gene + "\n") | |
print gene_id + ": SUCCESS (" + str(gene_count) + "/" + \ | |
str(num_genes) + ")" | |
else: | |
err_file.write(gene_id + "\n") | |
print gene_id + ": ERROR " + str(gene_data.status_code) + \ | |
" (" + str(gene_count) + "/" + str(num_genes) + ")" | |
def main(): | |
get_sequences("4699genes.csv", "4699genes.out", "4699genes.err") | |
if __name__ == "__main__": | |
main() |
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