python编写一段程序，实现纠正一段英文中的两种错误

编写一段程序，实现纠正一段英文中的两种错误：（1）单独字母“I”误写为“i”的情况；（2）以及单词中间字母“i”误写为“I”的情况。运行结果如图3所示。【参考代码行数：32行】
测试用短文：
i am a student. I am sIx years old. i like read book. I lIke play the piano.
I am a unIversity student. i major in Information management and informatIon system.
图3第3题执行结果图

用正则表达式替换

import re

s = '''i am a student. I am sIx years old. i like read book. I lIke play the piano.
I am a unIversity student. i major in Information management and informatIon system.'''

s = re.sub(r'\bi\b','I',s)
s = re.sub(r'\BI','i',s)
print(s)

如果Information 单词首字母“I”也要转成“i”
可以这样
s = re.sub(r'\BI|I\B','i',s)

import re

s = '''i am a student. I am sIx years old. i like read book. I lIke play the piano.
I am a unIversity student. i major in Information management and informatIon system.'''

s = re.sub(r'\bi\b','I',s)
s = re.sub(r'\BI|I\B','i',s)
print(s)

如有帮助，望采纳！谢谢!