如何使用Python读取此文件？

Question

我有一个以下格式的DNA文件:

>gi|5524211|gb|AAD44166.1| cytochrome
ACCAGAGCGGCACAGCAGCGACATCAGCACTAGCACTAGCATCAGCATCAGCATCAGC
CTACATCATCACAGCAGCATCAGCATCGACATCAGCATCAGCATCAGCATCGACGACT
ACACCCCCCCCGGTGTGTGTGGGGGGTTAAAAATGATGAGTGATGAGTGAGTTGTGTG
CTACATCATCACAGCAGCATCAGCATCGACATCAGCATCAGCATCAGCATCGACGACT
TTCTATCATCATTCGGCGGGGGGATATATTATAGCGCGCGATTATTGCGCAGTCTACG
TCATCGACTACGATCAGCATCAGCATCAGCATCAGCATCGACTAGCATCAGCTACGAC

如何读取此文件并提取DNA序列部分(ACCAGAGCGG...)而不添加任何换行符,例如:

ACCAGAGCGGCACAGCAGCGACATCAGCACTAGCACTAGCATCAGCATCAGCATCAGCCTACATCATCACAGCAGCATCA

也许不需要正则表达式？

Answer 1

如果总是只有一行标题:

dnalines = text.split('\n')[1:]
dna = ''.join(dnalines)

使用text =文件的内容(例如text = open('yourfile').read())