Python将数据写入excel或者txt，读入csv格式或xls文件

Posted 2021-01-02 蔡军帅

1.写入excel，一开始不需要自己新建一个excel，会自动生成

attribute_proba是我写入的对象

 import xlwt
    myexcel = xlwt.Workbook()
    sheet = myexcel.add_sheet(\'sheet\')
    si=-1
    sj=-1
    for i in attribute_proba:
        si=si+1
        for j in i:
            sj=sj+1
            sheet.write(si,sj,str(j))
        sj=-1
    myexcel.save("attribute_proba_big.xls") 

 

 2.写入csv，注意要打上 newline=""，否则会写一行空一行

 

    import csv
    with open("tech_problem.csv","w",newline="") as csvfile:
        writer = csv.writer(csvfile)
        for i in range(52):
            writer.writerow([i,bol[i]])

 

 slast的结构是有列表组成的列表

  ls=[]

  ls.append(number)

slast.append(ls)

可以直接写

    import csv
    with open("final.csv","w",newline="") as csvfile:
        writer = csv.writer(csvfile)
        writer.writerow([\'A\',\'B\',\'C\',\'D\',\'E\',\'F\',\'G\',\'H\',\'I\',\'J\',\'K\',\'L\',\'M\',\'N\',\'O\',\'P\',\'Q\',\'R\',\'S\',\'T\'])
        writer.writerows(slast)

 

 

3.写入txt，一开始就需要你新建一个txt文件

    f=open(\'F:/goverment/myfinalcode/predict.txt\', \'w\')
    for i in range(s):
       f.write(str(predict[i]))
       f.write(\'\\n\')
    f.write("写好了")
    f.close()

4.读入csv

    file = \'F:/goverment/myfinalcode/test_big.csv\'
    fo=open(file) 
    ls=[]
    for line in fo:
        line=line.replace("\\t",",")
        line=line.replace("\\n",",")
        line=line.replace("\\"",",")
        ls.append(line.split(","))
    for i in ls:
        li=[]
        for j in i:
            if j == \'\':
                continue
            li.append(str(j))
        testdata.append(li)   

 

 

 

 

from pandas import read_csv
    data_set = read_csv("F:/goverment/excel operating/type_in.csv")
    data = data_set.values[:, :]
    test_data = []
    for line in data:
        ls = []
        for j in line:
            ls.append(j)
        test_data.append(ls)

5.读入xls

 

    import xlrd
    file = \'F:/goverment/myfinalcode/test_big_label.xls\'
    wb = xlrd.open_workbook(file)
    ws = wb.sheet_by_name("Sheet1")
    for r in range(ws.nrows):
        col = []
        for c in range(ws.ncols):
            col.append(ws.cell(r, c).value)
        testlabel.append(col)

 

6.读入txt

with open("test.txt", "r") as f:
    data = f.readlines()
    print(data)