我在更新python字典中的值时遇到问题。我试图更新一个嵌套的值(无论是作为一个int或列表)为一个拳头级别的关键,而是我更新的值,所有第一级别的关键。python循环字典值引用更新所有值
我开始通过创建字典:从列表
kmerdict = {}
innerdict = {'endcover':0, 'coverdict':{}, 'coverholder':[], 'uncovered':0, 'lowstart':0,'totaluncover':0, 'totalbases':0}
for kmer in kmerlist: # build kmerdict
kmerdict [kmer] = {}
for chrom in fas: #open file and read line
chromnum = chrom[3:-3]
kmerdict [kmer][chromnum] = innerdict
那么我走通过染色体(为纯文本文件)(FAS,未示出),并采取7聚体字符串(K = 7),为钥匙。如果该键是键我期待的(kmerlist),并试图用它来引用嵌套在字典中的单个值的列表:
for chrom in fas: #open file and read line
chromnum = chrom[3:-3]
p = 0 #chromosome position counter
thisfile = "/var/store/fa/" + chrom
thischrom = open(thisfile)
thischrom.readline()
thisline = thischrom.readline()
thisline = string.strip(thisline.lower())
l=0 #line counter
workline = thisline
while(thisline):
if len(workline) > k-1:
thiskmer = ''
thiskmer = workline[0:k] #read five bases
if thiskmer in kmerlist:
thisuncovered = kmerdict[thiskmer][chromnum]['uncovered']
thisendcover = kmerdict[thiskmer][chromnum]['endcover']
thiscoverholder = kmerdict[thiskmer][chromnum]['coverholder']
if p >= thisendcover:
thisuncovered += (p - thisendcover)
thisendcover = ((p+k) + ext)
thiscoverholder.append(p)
elif p < thisendcover:
thisendcover = ((p+k) + ext)
thiscoverholder.append(p)
print kmerdict[thiskmer]
p += 1
workline = workline[1:]
else:
thisline = thischrom.readline()
thisline = string.strip(thisline.lower())
workline = workline+thisline
l+=1
print kmerdict
但是当我打印的字典,所有的“thiskmer”水平正在更新相同的值。我对字典不太擅长,我也看不到我的方式错误,但他们是深刻的!任何人都可以启发我吗?
希望我已经清楚了。我一直在修改这段代码太久了:(
+1。或者将'innerdict'移到内部循环中。 – unutbu 2013-02-11 02:55:44
@unutbu - 是的,这将是一个更明智的修复不是吗?我猜,今天铲了太多的雪。 – mgilson 2013-02-11 02:57:17
硬背,但很好的睡眠。保持温暖:) – unutbu 2013-02-11 02:59:02