python - 使用 Python 程序写入和读取 cmd 提示符

Question

为了让 Python 程序在提示符中写入类似“ls”的内容并读取(保存在 .txt 文件中)命令的输出，我需要做什么？

Answer 1

您可以使用subprocess模块调用命令:

import subprocess

# Call the command with the subprocess module
# Be sure to change the path to the path you want to list
proc = subprocess.Popen(["ls", "/your/path/here"], stdout=subprocess.PIPE)

# Read stdout from the process
result = proc.stdout.read().decode()

# Be safe and close the stdout.
proc.stdout.close()

# Write the results to a file.
with open("newfile.txt", "w") as f:
    f.write(result)

但请注意..如果您只想列出一个目录，os 模块有一个 listdir() 方法:

import os

with open("newfile.txt", "w") as f:
    for filename in os.listdir("/your/path/here"):
        f.write(filename)