Python 只打印一个文件

Question

Can someone explain me, why my function out() prints only one file? how can i fix, bcs it should print a lot of files recursively from 2019 DIR

class log():

    def __init__(self, search):
        self.search = search

    def get_files(self):
        path = '/var/log/HOSTS/dhcpd-s/2019'
        for root, directories, filenames in os.walk(path):
            for directory in directories:
                #do whatever u want with absolute dirs path
                dir_path = os.path.join(root, directory)

            for filename in filenames:
                #do whatever u want with absolute file path
                file_path = os.path.join(root, filename)
                if os.path.getsize(file_path) == 0:
                    pass
                else:
                    self.file_path = file_path

    def out(self):
        print(self.file_path)


if __name__=='__main__':
   p = log(search = sys.argv[1])
   p.get_files()
   p.out()

Answer 1

You are running in a loop

self.file_path = file_path

In each iteration it assigns new file path and after exiting the loop it holds the value of last iteration.

You can declare self.file_path as a list

def __init__(self, search):
        self.search = search
        self.file_path = []

And append file_path into the list

self.file_path.append(file_path)

Now you can print all paths

def out(self):
    for path  in self.file_path:
        print(path)

Answer 2

This should work

class log():

    def __init__(self, search):
        self.search = search

    def get_files(self):
        files = []
        path = '/var/log/HOSTS/dhcpd-s/2019'
        for root, directories, filenames in os.walk(path):
            for directory in directories:
                #do whatever u want with absolute dirs path
                dir_path = os.path.join(root, directory)

            for filename in filenames:
                #do whatever u want with absolute file path
                file_path = os.path.join(root, filename)
                if os.path.getsize(file_path) == 0:
                    pass
                else:
                    files.append(file_path)

         self.files_path = files
    def out(self):
        print(self.file_path)


if __name__=='__main__':
   p = log(search = sys.argv[1])
   p.get_files()
   p.out()

Answer 3

Below (collect data into a list)

import os 
import sys

class log():

    def __init__(self, search):
        self.search = search
        self.file_path = []

    def get_files(self):
        path = '/var/log/HOSTS/dhcpd-s/2019'
        for root, directories, filenames in os.walk(path):
            for directory in directories:
                #do whatever u want with absolute dirs path
                dir_path = os.path.join(root, directory)

            for filename in filenames:
                #do whatever u want with absolute file path
                file_path = os.path.join(root, filename)
                if os.path.getsize(file_path) == 0:
                    pass
                else:
                    self.file_path.append(file_path)

    def out(self):
        print(self.file_path)


if __name__=='__main__':
   p = log(search = sys.argv[1])
   p.get_files()
   p.out()