python file operation

python 文件读写操作

f.readlines()

读取文件所有行，包括换行符"n"

f.read().splitlines()

读取文件所有行，但是会排除换行符"n"

扩展：

都支持索引，如[::2](从第0行开始每2行读取一行，读到文末)

with open("data/data_base80", 'r') as f:
    lines = f.readlines()
    seqs = lines[1::2]
    idx = lines[0::2]
    f.close()

with open("data/data_base80", 'r') as f:
    lines = f.read().splitlines()
    seqs1 = lines[1::2]
    idx1 = lines[0::2]
    f.close()