python 中统计 一段序列中ATCG的次数

 

001、

(base) root@PC1:/home/test4# ls
test.py
(base) root@PC1:/home/test4# cat test.py                        ## 测试程序
#!/usr/bin/python
str1 = "AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC"
str1 = str1.upper()
a = str1.count("A")
t = str1.count("T")
c = str1.count("C")
g = str1.count("G")

print(a, t, c, g)
(base) root@PC1:/home/test4# python test.py                     ## 执行程序
20 21 12 17

 

参考：https://mp.weixin.qq.com/s?__biz=MzIxMjQxMDYxNA%3D%3D&chksm=9747cb76a03042607fa7b573195dd3412908e2f55bf00dd6f97e26844c0771369c52b20924ca&idx=1&lang=zh_CN&mid=2247484143&scene=21&sn=403fdbe47688e8c1bf1768fb45940a1c&token=823599124#wechat_redirect