如何使用python检查是否安装了maven

你可以使用 shutil.which 命令

import shutil
if not shutil.which("mvn"):
    print('Install maven firstly')

编辑: 对于python2.7,可以使用 distutils.spawn.find_executable 而是:

from distutils.spawn import find_executable
if not find_executable("mvn"):
    print('Install maven firstly')

# tested on windows 7, python 2.7.13 
import subprocess
import os


def version_available(cmd):
    try:
        # prints version and returns 0 if successulf
        output = subprocess.call([cmd, "--version"])
        return output == 0
    except OSError as e:
        # handle file not found error.
        if e.errno == os.errno.ENOENT:
            print("error please install " + cmd)
            return False
        else:
          # Something else went wrong, raise the exception
          raise

version_available("mvn")    # returns False, prints error please install mvn
version_available("python") # returns True,  prints Python 2.7.13

您可以使用终端命令 which mvn ,如果响应是 mvn not found 然后你应该安装它。

p = subprocess.Popen(["which", "mvn"], stdout=subprocess.PIPE)
print p.communicate()

然后比较输出