在Python 中使用Python 子进程模块

import subprocess

# 运行一个简单的命令
subprocess.run(["echo", "Hello, World!"])

# 运行一个命令并获取其输出
result = subprocess.run(["echo", "Hello, World!"], capture_output=True, text=True)
print(result.stdout)

# 运行一个命令并将其输出传递给另一个命令
result = subprocess.run(["echo", "Hello, World!"], capture_output=True, text=True)
subprocess.run(["grep", "World"], input=result.stdout, text=True)

# 使用管道连接多个命令
result = subprocess.run(["echo", "Hello, World!"], capture_output=True, text=True, stdout=subprocess.PIPE)
subprocess.run(["grep", "World"], stdin=result.stdout, text=True)

import subprocess

# 创建一个新的进程
process = subprocess.Popen(["echo", "Hello, World!"], stdout=subprocess.PIPE)

# 读取进程的输出
output, _ = process.communicate()

# 等待进程完成
process.wait()

print(output)