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python 讀取和寫入csv檔案

python csv讀取和寫入csv檔案的簡單應用

#寫入
import csv
dic = {'./a.c':1, './b.c':2, './d.c':3}
csvFile = open('csvFile.csv','w', newline='') 
writer = csv.writer(csvFile)
for key in dic:
    writer.writerow([key, dic[key]])

writer.writerow(['./a.c',2,7])
writer.writerow(['./c.c',2,8])

csvFile.close()

#讀取
csvFile = open
("csvFile.csv", "r") reader = csv.reader(csvFile) # 返回的是迭代型別 data = [] for line in reader: print(line) data.append(line) print(int(data[0][1])*4) csvFile.close()