os.popen(cmd) 返回脚本执行的输出内容作为返回值 >>> md5_value = os.popen('md5sum /root/all.sql') #将结果赋值给变量 >>> print(type(md5_value)) #查看类型 <class 'os._wrap_close'> >>> print(md5_value.read().split()[0]) #取值 7735d611ebce91ebb4c7acc4747a8b67 1. 2. 3. 4....
subprocess.Popen()工具使用及封装 importlogging importos importsubprocess importsys importtime fromtools.unitimportfile_path classSubProcess: @classmethod defshell_subprocess(cls, cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE): returnsubprocess.Popen(cmd, shell=shell, stdout=stdout, std...
参考文档 os.popen(cmd, mode='r', buffering=-1) Open a pipe to or from command cmd. The return value is an open file object connected to the pipe, which can be read or written depending on whether mode is 'r' (default) or 'w'. The buffering argument has the same meaning as the...
res = os.popen(f"for job in {job_str}; do curl -G http://{host}/jenkins/pre/to_db?"f"jenkins_name={jenkins_name}\&job_name=$job & done").read() res_str = res.replace('}{', '}, {').join('[]') res_json = json.loads(res_str) response_data.update({ 'param': res...
popen()返回一个类文件对象;注意readlin()往往保留输入文字行尾的newline字符 14.5.3 os.fork(), os.exec*(), os.wait*() ret = os.fork()# 产生两个进程,都返回 if ret == 0# 子进程返回的PID是0 child_suite# 子进程的代码 else:# 父进程返回时子进程的PID ...
with os.popen('"' + SVNEXE + '" cat ' + XMLURL, 'r') as pipe: xmldata = pipe.read() # 创建一个新项目: proj = projects.create(PROJECT) # 将数据导入项目。 proj.import_xml(xmldata, False) # 最后保存。 :-) proj.save() ...
def,return yield global(命名空间) from,import(模块属性访问) class try,except,finally(捕捉异常) raise(手动触发异常) del(删除引用) assert(调试检查) with,as(环境管理器) python的比较操作: 所有python对象都支持比较操作,可用于测试相等性、相对大小等; 如果是复合对象,python会检查所有部分,包括自动遍历各级...
Popen类最为一个低级 API,它主要用于构建其他 API,在更复杂的流程交互中非常有用。Popen 的构造函数接受参数来设置新进程,以便父进程可以通过管道与它通信。它替换了其他模块和函数的所有功能,甚至更多。Subprocess 子进程模块旨在替换os.system(), os.spawnv()等函数,os 和 popen2 模块中 popen()的变体,以及 ...
proc = subprocess.Popen( cmd, shell=True, # # without this line, some Popen does not return at once as expected # close_fds=True, stderr=subprocess.PIPE, stdout=subprocess.PIPE) spent = time.time() - t0 if spent > expect: print cmd + ' spent: ' + str(spent) ...
_popen.wait(timeout) if res is not None: _current_process._children.discard(self) join方法中调用了wait,告诉系统释放僵尸进程。discard为从自己的children中剔除 解决方法三:http://blog.csdn.net/u010571844/article/details/50419798 思考: from multiprocessing import Process import time,os def task():...