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:::4. Exit the ipython3 shell, download the checking script and check your work. Enter the following commands from the bash shell.<source>

:::5. Before proceeding, make certain that you identify any and all errors in lab3b.py. When the check script tells you everything is ok before proceeding to the next step.

:::5. Exit the ipython3 shell, download the checking script and check your work. Enter the following commands from the bash shell.<source>

:::6. Before proceeding, make certain that you identify any and all errors in lab3c.py. When the check script tells you everything is ok before proceeding to the next step.

:#Start the ipython3 shell:<source>

 :#There are many available modules and attributes available as part of subprocess, we are interested in "'''Popen'''". This method subprocess.Popen() can be used to run system commands as a child process to the Python script. This below output will create a new child process, in Python we can control this through the new Python object we just created, "'''p'''". "'''p'''" now has a collection of methods(functions that are apart of a object) available, view them with '''dir()'''.<source>

 :#This next step is going to communicate with the process and get the stdout and stderr from the command we previously.<source>

While many of these system commands could be instead written in simply '''Practice Running System Commands From Python, the exercise of running system commands is important.''':'''lab3dPerform the Following Instructions:''':#Create the "'''~/ops435/lab3/lab3d.py'''" script. The purpose of this script is to create a Python function that can return the linux system's root directory free space. :::*The script should have a '''Shebang line''':::*The script should import subprocess:::*The script should use the linux command "df -h | grep '/$' | awk '{print $4}'" :::*The script should contain the function free_space():::*The function free_space() should return a string which is in utf-8 and has newline characters stript  :::*Note: your output may be completely different, the free/available disk space on every computers root directory may be different. :::2. Sample Run 1: <source>

 :::3. Sample Import 1:<source>

 :::4. Exit the ipython3 shell, download the checking script and check your work. Enter the following commands from the bash shell.<source>

:::5. Before proceeding, make certain that you identify any and all errors in lab3d.py. When the check script tells you everything is ok before proceeding to the next step.