For循環將每一行打印到文件。 錯誤

Question

我試圖做一個for循環，將列表中的每一行打印到一個文件中，但是出現此錯誤。 有什么幫助嗎？ 謝謝

def write_file(filename, rabbitlist, foxlist, finallist, averagefox, averagerabbit):

    # Opens File for Data Input
    outfile = open(str(filename) + ".csv", 'w')

    # Writes Data to Newly Created File
    finalresult = "\n".join(", ".join(map(str, l)) for l in finallist)
    outfile.write(str("Day, Foxes, Rabbits, , Average Foxes, Average Rabbits\n"))
    lastline = [0, foxlist[0], rabbitlist[0], " ", averagefox, averagerabbit]
    for item in lastline:
        outfile.write(" %s", item)
    outfile.close()

我得到的錯誤是： Python: TypeError: takes exactly 1 argument (2 given)

Answer 1

.write只接受1個參數，所以我認為你可以做到這一點

def write_file(filename, rabbitlist, foxlist, finallist, averagefox, averagerabbit):

    # Opens File for Data Input
    outfile = open(str(filename) + ".csv", 'w')

    # Writes Data to Newly Created File
    finalresult = "\n".join(", ".join(map(str, l)) for l in finallist)
    outfile.write(str("Day, Foxes, Rabbits, , Average Foxes, Average Rabbits\n"))
    lastline = [0, foxlist[0], rabbitlist[0], " ", averagefox, averagerabbit]
    for item in lastline:
        outfile.write(" %s" % item)
    outfile.close()

Answer 2

由於您要使用csv，為什么不使用csv模塊。 您的方法將變為：

import csv

def write_file(filename,
               rabbitlist,
               foxlist,
               finallist,
               averagefox,
               averagerabbit):
    header_row = ['Day','Foxes','Rabbits',' ','Average Foxes','Average Rabbits']
    with open(filename,'w') as f:
        writer = csv.writer(f, delimiter=',')
        writer.writerow(header_row)
        writer.writerows(finallist)
        writer.writerow([0,
                         foxlist[0],
                         rabbitlist[0],
                         " ",
                         averagefox,
                         averagerabbit])

with_statement將自動關閉文件，並且csv模塊具有writerows ，其作用與名稱相同。

Answer 3

在python中，File的write方法僅接受一個參數，而您要傳遞兩個參數。

您都可以執行outfile.write（“％s”％item）

或者更好的方法是使用泡菜