使用Python程序写入和读取cmd提示符

Question

为了使Python程序在提示符中写入“ls”并读取（保存在.txt文件中）命令的输出，我该怎么做？

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)

请注意..如果您只想列出目录，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)

Answer 2

Python可用于执行bash和批处理命令（Linux和Windows），方法是：

subprocess.check_call（[“ls”，“ - l”]）