0
我有幾個包含流數據的數據文件。例如,將零寫入空白單元格python
9/12/1999 0
13/12/1999 2544
14/12/1999 2552
15/12/1999
16/12/1999
18/12/1999 3039
19/12/1999 3043
我寫了一個代碼讀取所有的數據文件,並寫入到具有格式 日期初級流瑜伽中級課程等新的輸出文件
我也寫在連續的日期(那裏不是該日期的數據,將0寫入輸出文件)。我在下面的腳本中沒有包括這一點。
我遇到的問題是,當數據文件中有一行帶日期但沒有流量數據(例如,上面例子中的第4,5行)。該代碼給了我空白值,而不是0.我認爲這是一個簡單的事情,但我無法弄清楚。任何人都可以幫助我嗎? 我的代碼是
for Qfilename in Q_filenamelist:
Qfileopen = open(Qfilename,'r')
for line in Qfileopen:
line = line.rstrip()
if not line.startswith("and") and not line.startswith("Time") and not line.startswith("Date"): #ignore headers
Qwordslist = line.split(',')
time = Qwordslist[0]
flow = Qwordslist[1]
if not time in time_list:
time_list.append(time)
index = time+" "+Qfilename
Qourdict[index] = flow
Qfileopen.close()
time_list.sort(key=lambda x: datetime.strptime(x,'%d/%m/%Y'))
#write output data
outfile = open(outfilename,'w')
outfile.write("Date,")
for Qfilename in Q_filenamelist:
Qfilename = Qfilename.split(".")[0]
outfile.write(Qfilename+',')
outfile.write('\n')
for time in time_list:
outfile.write(time+',')
for Qfilename in Q_filenamelist:
index = time+" "+Qfilename
grabflow = Qourdict.get(index,"0.0")
if grabflow == " ":
outfile.write("0.0"+',')
else:
outfile.write(str(grabflow)+',')
outfile.write('\n')
outfile.close()
非常感謝。
除非這是功課,HTTP:/ /docs.python.org/2/library/csv.html – Patashu