How to use 'powershell run command in background' in Python

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357def run_powershell_script(script_content):
358 tmp_dir = tempfile.gettempdir()
359 random_filename = ''.join(random.choice(string.lowercase) for i in range(10))
360 script_file = open(os.path.join(tmp_dir,random_filename+".ps1"),"w")
361 script_file.write(script_content)
362 script_file.close()
363 result = os_run_os_command("powershell -ExecutionPolicy unrestricted -File {0}".format(script_file.name))
364 os.remove(script_file.name)
365 return result
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20def powershell_execute(script, func):
21 """
22 Execute a powershell script
23 """
24 output = ""
25 try:
26 script = re.sub("Write-Verbose ", "Write-Output ", script, flags=re.I)
27 script = re.sub("Write-Error ", "Write-Output ", script, flags=re.I)
28 script = re.sub("Write-Warning ", "Write-Output ", script, flags=re.I)
29
30 full_args = ["powershell.exe", "-NoProfile", "-NoLogo", "-C", "-"]
31
32 info = subprocess.STARTUPINFO()
33 info.dwFlags = STARTF_USESHOWWINDOW
34 info.wShowWindow = SW_HIDE
35
36 p = subprocess.Popen(full_args, startupinfo=info, stdin=subprocess.PIPE, stderr=subprocess.STDOUT,
37 stdout=subprocess.PIPE, universal_newlines=True, shell=True)
38 p.stdin.write("$base64=\"\"" + "\n")
39
40 n = 25000
41 b64_script = base64.b64encode(script)
42 tab = [b64_script[i:i + n] for i in range(0, len(b64_script), n)]
43 for t in tab:
44 p.stdin.write("$base64+=\"%s\"\n" % t)
45 p.stdin.flush()
46
47 p.stdin.write("$d=[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($base64))\n")
48 p.stdin.write("Invoke-Expression $d\n")
49
50 p.stdin.write("\n$a=Invoke-Expression \"%s\" | Out-String\n" % func)
51 p.stdin.write("$b=[System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes(\"$a\"))\n")
52 p.stdin.write("Write-Host \"[BEGIN]\"\n")
53 p.stdin.write("Write-Host $b\n")
54
55 # begin flag used to remove possible bullshit output print before the func is launched
56 if '[BEGIN]' in p.stdout.readline():
57 # Get the result in base64
58 for i in p.stdout.readline():
59 output += i
60 output = base64.b64decode(output)
61 except Exception:
62 pass
63
64 return output

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