在网上找了段按条件批量读取txt文件某行并汇总的代码，但是能打印出来却没能保存，想知道该怎么保存新文件？

Question

刚接触python，想批量读取txt文件的某行，从网上找了段代码，能成功跑出来，但没有生成汇总好的新文件，部分代码也看不懂，求大神教我怎么保存运行结果至新的txt或者csv，感谢！

import os

def eachFile(filepath):
    pathDir =os.listdir(filepath)        #遍历文件夹中的text
    return pathDir

def readfile(name):
    fopen=open(name, encoding='gb18030')
    for lines in fopen.readlines():         #按行读取text中的内容
        lines = lines.replace("\n", "").split(",")
        if '57511' in str(lines):
           print(lines)
        if '57512' in str(lines):
           print(lines)
        if '57513' in str(lines):
           print(lines)
        if '57514' in str(lines):
           print(lines)
        if '57516' in str(lines):
           print(lines)
    fopen.close()

filePath = "E:/AHYH_data/vis-20200119-0219"
pathDir=eachFile(filePath)
for allDir in pathDir:
    # child = os.path.join('%s%s' % (filepath, allDir))
    child = "E:/AHYH_data/vis-20200119-0219" + '\\' + allDir
    readfile(child)

以下是运行的部分结果

[' 57511 106.45 29.85 240 5.1', '20021922']
[' 57512 106.27 29.97 364 8.6', '20021922']
[' 57513 106.63 29.73 464 9.1', '20021922']
[' 57514 106.22 29.58 331 5.2', '20021922']
[' 57516 106.47 29.58 259 5.3', '20021922']
[' 57511 106.45 29.85 240 4.8', '20021923']
[' 57512 106.27 29.97 364 7.2', '20021923']
[' 57513 106.63 29.73 464 9.1', '20021923']
[' 57514 106.22 29.58 331 6.0', '20021923']
[' 57516 106.47 29.58 259 5.2', '20021923']

希望将运行结果保存为新的文件

Answer 1

大概如下：

import os

def eachFile(filepath):
    pathDir =os.listdir(filepath)        #遍历文件夹中的text
    return pathDir

def readfile(name):
    content = ''
    fopen=open(name, encoding='gb18030')
    for lines in fopen.readlines():         #按行读取text中的内容
        lines = lines.replace("\n", "").split(",")
        if '57511' in str(lines):
            content += lines + '\n'
            print(lines)
        if '57512' in str(lines):
            content += lines + '\n'
            print(lines)
        if '57513' in str(lines):
            content += lines + '\n'
            print(lines)
        if '57514' in str(lines):
            content += lines + '\n'
            print(lines)
        if '57516' in str(lines):
            content += lines + '\n'
            print(lines)
    fopen.close()
    with open("e:/AHYH_data/visNew.txt",'w', encoding='utf-8') as f :
        f.write(content)
    
filePath = "E:/AHYH_data/vis-20200119-0219"
pathDir=eachFile(filePath)
for allDir in pathDir:
    # child = os.path.join('%s%s' % (filepath, allDir))
    child = "E:/AHYH_data/vis-20200119-0219" + '\\' + allDir
    readfile(child)