我如何比较列表和列表中的列表

Question

x = input("Please enter your DNA sequence: ")
k = []
hi = [["Phenylalanine","UUU"],["Leucine","UUA"]]
z = {'A' : 'U', 'T' : 'A', 'G' : 'C', 'C' : 'G'}
for i in x:
  l = z[i]
  k.append(l)
k = ''.join(k)
print("Your RNA sequence is :" + k)
t = [k[i:i+3] for i in range(0, len(k), 3)]
for t in t:
  a = hi[2]
  b = t[1]
  o = [i for i, j in zip(a, b) if i == j]
  print("The Amino acid cequence is" + (o) + ".")

[我想要一个代码，如果我输入AAAAAT，它将把它更改为[UUU，UUA]，然后在hi列表中找到它并显示“氨基酸序列是苯丙氨酸，亮氨酸。”我不怎么有人可以帮忙吗？

Answer 1

代码段存在一些突出的问题：

1. a = hi[2]：hi只有2个元素，但您正在尝试访问第三个元素
2. for t in t请勿使用列表变量本身遍历列表。
3. 命名您的变量，以便我们能够理解意图

已经说过，解决此问题的直接方法是将hi做成字典

hi_dict = {"UUU":"Phenylalanine","UUA":"Leucine"}

并将结果字符串保留在循环之外。

answer= "The Amino acid cequence is "
for ti in t:
  answer = answer + hi_dict [ti] +" "
print(answer)

示例：

Please enter your DNA sequence: AAAAAT
Your RNA sequence is :UUUUUA
The Amino acid cequence is Phenylalanine Leucine 

Answer 2

DAN_TO_AA = { 
        'ATA':'I', 'ATC':'I', 'ATT':'I', 'ATG':'M', 
        'ACA':'T', 'ACC':'T', 'ACG':'T', 'ACT':'T', 
        'AAC':'N', 'AAT':'N', 'AAA':'K', 'AAG':'K', 
        'AGC':'S', 'AGT':'S', 'AGA':'R', 'AGG':'R',                  
        'CTA':'L', 'CTC':'L', 'CTG':'L', 'CTT':'L', 
        'CCA':'P', 'CCC':'P', 'CCG':'P', 'CCT':'P', 
        'CAC':'H', 'CAT':'H', 'CAA':'Q', 'CAG':'Q', 
        'CGA':'R', 'CGC':'R', 'CGG':'R', 'CGT':'R', 
        'GTA':'V', 'GTC':'V', 'GTG':'V', 'GTT':'V', 
        'GCA':'A', 'GCC':'A', 'GCG':'A', 'GCT':'A', 
        'GAC':'D', 'GAT':'D', 'GAA':'E', 'GAG':'E', 
        'GGA':'G', 'GGC':'G', 'GGG':'G', 'GGT':'G', 
        'TCA':'S', 'TCC':'S', 'TCG':'S', 'TCT':'S', 
        'TTC':'F', 'TTT':'F', 'TTA':'L', 'TTG':'L', 
        'TAC':'Y', 'TAT':'Y', 'TAA':'_', 'TAG':'_', 
        'TGC':'C', 'TGT':'C', 'TGA':'_', 'TGG':'W', 
    }

DAN_TO_RNA = {"A": "U", "T": "A", "G": "C", "C": "G"}

seq = "AAAAAT"
rna = " ".join(
    [DAN_TO_RNA.get(seq[i : i + 3], seq[i : i + 3]) for i in range(0, len(seq), 3)]
)
protein = "".join([DAN_TO_AA.get(seq[i : i + 3], "-") for i in range(0, len(seq), 3)])
print(f"Your RNA sequence is {rna}")
print(f"The Amino acid cequence is {protein}")