如何将代码输出逐行读取和写入代码到文本文件中

Question

例如，我的文本文件中的列表如下所示：

1,2.12,3.123

然后将其打印到我的输出文本文件（每个数字的小数位）：

Line 1: INVALID VALID INVALID

但是，如果我的文本文件中的列表是这样的：

1,2.12,3.123
1,1.00

然后将其打印到我的输出文本文件中：

Line 1: Line 2:   INVALID 
VALID
INVALID
Line 3: Line 4:   INVALID
VALID
INVALID

我如何将其打印到我的输出文本文件中：

Line 1: INVALID VALID INVALID
LINE 2: INVALID VALID

我试图添加一个索引=索引+1，以便它可以将1添加到每一行。

from functools import reduce
res = 0
outfile = "output2.txt"
baconFile = open(outfile,"wt")
index = 0
invalid_string = "INVALID"
valid_string = "VALID"
for line in open("file.txt"):  # read file line-by-line
        carrera = ''
        index = index +1       # Count lines that contain what the command wants
        print("Line {}: ".format(index))
        baconFile.write("Line {}:  ".format(index))

    with open('file.txt') as file:
        number_list = file.readline().strip().split(',')
        for line in number_list:
            if len(line.split('.')[-1]) == 2:
                # res += 1
##              print("VALID")

                carrera = valid_string 
            if len(line.split('.')[-1]) != 2:
                #res += 1
                carrera = invalid_string  

            print (carrera)
            baconFile.write(carrera + " ")
# print(res)
baconFile.close()

预期：

Line 1: INVALID VALID INVALID
LINE 2: INVALID VALID

实际：

Line 1: Line 2:   INVALID 
    VALID
    INVALID
    Line 3: Line 4:   INVALID
    VALID
    INVALID

Answer 1

使用file中的for line in file遍历文件中的每一行，并使用print('...', end='') for line in file不换行的情况下进行print('...', end='') 。 不要open()两次。

res = 0
outfile = "output2.txt"
baconFile = open(outfile,"wt")
index = 0
invalid_string = "INVALID"
valid_string = "VALID"
index = 1
with open('file.txt') as file:
    for line in file:
        print("Line {}: ".format(index), end='')
        baconFile.write("Line {}:  ".format(index))
        number_list = line.strip().split(',')
        for number in number_list:
            if len(number.split('.')[-1]) == 2:
                #res += 1
##              print("VALID")

                carrera = valid_string 
            if len(number.split('.')[-1]) != 2:
                #res += 1
                carrera = invalid_string  

            print (carrera, end='')
            baconFile.write(carrera + " ")
        print('\n', end='')
        baconFile.write('\n')
        index += 1

（对于其他回答者：我避免enumerate因为代码中已经包含index 。）

Answer 2

我对格式进行了一些修改：

res = 0
outfile = "output2.txt"
baconFile = open(outfile,"wt")
index = 0
invalid_string = "INVALID"
valid_string = "VALID"
with open('file.txt') as file:
    for line in file:
        index = index +1
        o = "Line {}: ".format(index)
        number_list = line.strip().split(',')
        for x in number_list:
            if len(x.split('.')[-1]) == 2:
                o += valid_string + " "
            if len(x.split('.')[-1]) != 2:
                o += invalid_string + " "

        print(o)
        baconFile.write(o + "\n")
baconFile.close()

编辑：意外地将'carrera'变量留在那里，以为我可以将其编辑掉，因为它不再具有用途