这是我需要处理的txt文件:
chr8 148401 153100 duplication
chr8 206001 207100 deletion
chr8 584401 589500 deletion
chr8 615101 616600 deletion
chr8 842601 843200 deletion
chr8 868901 869700 deletion
基本上我想提取两个数字,然后做减法。我的代码如下:
#!/usr/bin/python
import os,sys
file = open('/home/xxx/sge_jobs_output/rCEU.bed','r')
for line in file.readlines():
num1 = line.split()[1].split()[0]
num2 = line.split()[1].split()[1].split()[0]
num = int(num2)-int(num1)
print num
我可以成功打印出num1;但是num2不起作用。所以我们不能连续使用两个以上的.split?
错误就像:
Traceback (most recent call last):
File "CNV_length_cal.py", line 8, in <module>
num2 = line.split()[1].split()[1].split()[0]
IndexError: list index out of range
这里有什么问题?我对.split命令感到困惑......但是我找不到关于那个...的教程
答案 0 :(得分:5)
一次拆分就足够了!
>>> s="chr8 584401 589500 deletion"
>>> l = s.split()
>>> l
['chr8', '584401', '589500', 'deletion']
>>> int(l[1]) - int(l[2])
-5099