预期缩进块错误（蛋白质序列计数）

Question

代码：

def find_orf_lengths(dna,frame,cutoff):
    orfs_lengths = []

    for i in range(0,len(dna),3):
        if(dna[i:i+3] == "ATG"):
            orfs_lenghts[i] += 1
            elif(dna[i:i+3] == "TGA"|"TAA"|"TAG"):
                if(orfs_lenghts[i] >= cutoff):
                    orfs_lengths.append(100)
                    elif(orfs_lenghts[i] < cutoff):
                        continue

    return orfs_lengths         

我正在研究一个蛋白质序列项目，问题是，无论我做什么，我都可以通过＆＃34;预期缩进的块＆＃34;错误，如下所示：

             File "lab6hw.py", line 27
               if(dna[i:i+3] == "ATG"):
            IndentationError: expected an indented block

Answer 1

将elif放在相同的缩进级别，如下所示：

def find_orf_lengths(dna,frame,cutoff):
    orfs_lengths = []
    for i in range(0, len(dna), 3):
        if(dna[i:i + 3] == "ATG"):
            orfs_lenghts[i] += 1
        elif(dna[i:i + 3] == "TGA" | "TAA" | "TAG"):
            if(orfs_lenghts[i] >= cutoff):
                orfs_lengths.append(100)
            elif(orfs_lenghts[i] < cutoff):
                continue

    return orfs_lengths  

Answer 2

elif必须与其上方的if处于同一缩进级别。你可能意味着这样的事情：

def find_orf_lengths(dna,frame,cutoff):
    orfs_lengths = []

    for i in range(0,len(dna),3):
        if(dna[i:i+3] == "ATG"):
            orfs_lenghts[i] += 1
        elif(dna[i:i+3] == "TGA"|"TAA"|"TAG"):
            if(orfs_lenghts[i] >= cutoff):
                orfs_lengths.append(100)
            elif(orfs_lenghts[i] < cutoff):
                continue

    return orfs_lengths  

虽然我不知道输入就无法测试你的代码。