Question

一个python读取TXT里数据的问题.

我读到txt某一行内容，比如图片里面第二行的fly [0.994379 06566325]怎么样把fly后面括号[]里的数字+1再更新到txt里面。希望有大神解惑，感激不尽。

Answer 1

Python 3.5.2 (default, Sep 30 2016, 01:32:24)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> s='fly [0.994379 06566325]'
>>> s1=s[s.find('[')+1:s.find(']')]
>>> s1
'0.994379 06566325'
>>> f=float(s1.replace(' ',''))+1
>>> f
1.9943790656632499
>>> sf='%s%f%s' % (s[:s.find('[')+1],f,']')
>>> sf
'fly [1.994379]'
>>>