回答此问题可获得 20 贡献值,回答如果被采纳可获得 50 分。
<p>写入csv时,是否可以将列表中的每个索引拆分到新行?你知道吗</p>
<p>例如,我向一个列表添加了许多索引,当我写入csv时,它们都打印在同一行上。你知道吗</p>
<p>输出电流路由.append当我写入csv文件时。。。你知道吗</p>
<pre><code>("Index1")("Index2")("Index3")("Index4")("Index5")("Index6")
</code></pre>
<p>我想写为:</p>
<pre><code>("Index1")
("Index2")
("Index3")
("Index4")
("Index5")
("Index6")
</code></pre>
<p>我知道我会写作</p>
<pre><code>rec=index[1]
f.writerow(rec)
</code></pre>
<p>重复6次。。问题是,我的列表中可以有2个索引到100个索引,所以我需要做的是能够根据列表中索引的数量打印n个索引。你知道吗</p>
<p>谢谢。<br/>
f=打开(“route1.csv”,“w”)
f、 截断()
f、 关闭()</p>
<pre><code>print "Route Calculator"
cur = (0, 0)
route = [0]
xy = [ ]
z= ()
zz= []
dest=[]
n = input("Enter number of destinations to visit:")
a = range(1, n + 1)
cidd = []
for i in range(n):
cid=raw_input("Enter Customer ID")
f3=csv.reader(open("data/customer.csv",'r'))
for row in f3:
if row[0]==cid:
street=row[2]
pcode=row[3]
tel=row[4]
x=eval(row[5])
y=eval(row[6])
z=row[1]
xy.append((x,y))
zz.append(((cid,z)))
cidd.append((((cid,z,street,pcode,tel))))
print "Destinations:",cidd
dest = [ ]
ndd =[ ]
for i in range(n):
nd = []
for i in xy:
i = list(i)
distance = round(math.hypot((cur[0] - i[0]), (cur[1] - i[1])),4)
nd.append(distance)
print "Current location:", cur
print "Coordinates to travel to:", xy
print "Distances to destinations:", nd, "minimum distance:", min(nd)
nn = (xy[nd.index(min(nd))][0], xy[nd.index(min(nd))][1])
print "Nearest neighbour:", nn
print "Nearest destination:", cidd[xy.index(nn)]
print
dest.append(((min(nd))))
ndd=sum(dest)
route.append(((cidd[xy.index(nn)],(min(nd)))))
del cidd[xy.index(nn)]
xy.remove(nn)
cur = list(nn)
distance = round(math.hypot(nn[0], nn[1]), 4)
dest.append(distance)
route.append(0)
cidd.extend(dest)
print "Destination List:",route
o=open("route1.csv",'ab')
f=csv.writer(o)
rec3=("Driver:",driver)
f.writerow(rec3)
rec4=("Date:",(time.strftime("%d/%m/%Y")))
f.writerow(rec4)
header=(["CID..","Customer Name..........","Address.........","Postcode..","Telephone..","Distance from prev"])
f.writerow(header)
rec=(route)
f.writerow(rec)
rectotal=("Total Distance to Travel",ndd)
f.writerow(rectotal)
print "Route Saved to route1.csv"
</code></pre>
<p>这是我当前的代码和路由.append我试着索引到不同的行上。谢谢</p>