001、
[root@pc1 test]# cat a.fa
>chr1
aatt
cc
>chr2
ttgg
ccgg
>chr3
aa
[root@pc1 test]# cat test.py
#!/usr/bin/python
in_file = open("a.fa", "r")
dict1 = dict()
for i in in_file:
i = i.strip()
if i.startswith(">"):
key = i
dict1[key] = ""
else:
dict1[key] += i
for i,j in dict1.items():
print(i.strip(">"), len(j))
in_file.close()
[root@pc1 test]# python test.py
('chr1', 6)
('chr2', 8)
('chr3', 2)
标签：dict1,key,python,scaffold,pc1,file,test,fasta From： https://www.cnblogs.com/liujiaxin2018/p/16834390.html