python条件并计算和?
编写一个函数,根据以下评分方案比较两个DNA序列:一个匹配+1,每个连续匹配+3,每个不匹配-1 我的代码:python条件并计算和?,python,Python,编写一个函数,根据以下评分方案比较两个DNA序列:一个匹配+1,每个连续匹配+3,每个不匹配-1 我的代码: def pairwiseScore(seqA, seqB): '''1+1+3-1-1+1+3+1-1-1+1-1-1-1''' print signed = '' score = 0 for i in range(len(seqA)): if(seqA[i] == seqB[i]): signed += '|'
def pairwiseScore(seqA, seqB):
'''1+1+3-1-1+1+3+1-1-1+1-1-1-1'''
print
signed = ''
score = 0
for i in range(len(seqA)):
if(seqA[i] == seqB[i]):
signed += '|'
score += 1
if signed=='||':
score=0
score += 3
else:
score += 1
else:
signed += ' '
score -=1
return seqA+"\n"+signed+"\n"+seqB+"\n"+'score:'+ str(score)
print pairwiseScore("ATTCGT", "ATCTAT")
print pairwiseScore("GATAAATCTGGTCT", "CATTCATCATGCAA")
print pairwiseScore('ATCG', 'ATCG')
print pairwiseScore('CATTCATCATGCAA', 'GATAAATCTGGTCT')
输出:
ATTCGT
|| |
ATCTAT
score:2
GATAAATCTGGTCT
|| ||| |
CATTCATCATGCAA
score:4
ATCG
||||
ATCG
score:7 // this should be 10 because +3 for each consecutive match` 1 + 3 +3 +3 =10
CATTCATCATGCAA
|| ||| |
GATAAATCTGGTCT
score:4
谁能给我小费吗
谢谢
此代码仅在签名完全等于“| |”
时匹配
要查看最后两个字符,请尝试:
if signed[-2:] == '||':
我想你在计算分数时也有计算错误
以下是您的功能的固定和清理版本:
def pairwiseScore(seqA, seqB):
signed = ''
score = 0
for i in range(len(seqA)):
if seqA[i] == seqB[i]:
signed += '|'
if signed[-2:] == '||':
score += 3
else:
score += 1
else:
signed += ' '
score -= 1
return '%s\n%s\n%s\nscore:%d' % (seqA, signed, seqB, score)
提示:使用一致的缩进。除此之外,你有什么特别的问题吗?看看分数:7我应该得到分数:10,因为每次连续比赛+3看起来像是家庭作业。请集中你的问题。就目前的问题而言,不清楚要问什么,它将被关闭。是的,这是我试图完成的家庭作业。你在添加3分之前重置分数。例如:ATCG | | | | | ATCG分数应该是:1+3+3=10,如果你这样做,分数将是3
def pairwiseScore(seqA, seqB):
signed = ''
score = 0
for i in range(len(seqA)):
if seqA[i] == seqB[i]:
signed += '|'
if signed[-2:] == '||':
score += 3
else:
score += 1
else:
signed += ' '
score -= 1
return '%s\n%s\n%s\nscore:%d' % (seqA, signed, seqB, score)
def pairwiseScore(seqA, seqB):
'''1+1+3-1-1+1+3+1-1-1+1-1-1-1'''
print
signed = ''
score = 0
for i in range(len(seqA)):
if(seqA[i] == seqB[i]):
signed += '|'
if i > 0 and signed[len(signed)-2]=='|':
score += 3
else:
score += 1
else:
signed += ' '
score -=1
return seqA+"\n"+signed+"\n"+seqB+"\n"+'score:'+ str(score)
print pairwiseScore("ATTCGT", "ATCTAT")
print pairwiseScore("GATAAATCTGGTCT", "CATTCATCATGCAA")
print pairwiseScore('ATCG', 'ATCG')
print pairwiseScore('CATTCATCATGCAA', 'GATAAATCTGGTCT')