版權聲明:本文爲博主原創文章,未經博主允許不得轉載。 https://blog.csdn.net/PinkRiverside/article/details/81388082
原代碼:
import csv
import os
# 2016-01-01 週五
i = 4
with open(os.path.join(os.path.dirname(__file__), "data/weekend.csv")) as csvFile:
rows = csv.reader(csvFile)
with open(os.path.join(os.path.dirname(__file__), "data/test.csv"), 'w') as f:
writer = csv.writer(f)
for row in rows:
row=list(row)
if i > 5:
row.append("1") # 週末爲1
else:
row.append("0") # 工作日爲0
i = i % 7 + 1
writer.writerow(row)
目的是將從2016-01-01至2018-05-31的日期貼上標籤,工作日爲0,週末爲1。代碼運行後結果如下,會帶有空餘行:
解決方案:在open的時候加上 newline=”” 這個參數。
修改後的代碼:
import csv
import os
# 2016-01-01 週五
i = 4
with open(os.path.join(os.path.dirname(__file__), "data/weekend.csv")) as csvFile:
rows = csv.reader(csvFile)
with open(os.path.join(os.path.dirname(__file__), "data/test.csv"), 'w',newline='') as f:
writer = csv.writer(f)
for row in rows:
row=list(row)
if i > 5:
row.append("1") # 週末爲1
else:
row.append("0") # 工作日爲0
i = i % 7 + 1
writer.writerow(row)
修改後運行結果: