python文件处理,得到DNA的互补链或反向互补链
#!/usr/bin/python3 #-*-coding:utf-8 -*- "得到DNA的互补链或者反向互补链" f=open('./test.txt') line=f.read() transline=line[::-1].replace('A','t').replace('T','a').replace('G','c').replace('C','g').upper() f.close() fw=open('./out.txt','w') fw.write(transline) fw.close()