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FileNotFoundError: [Errno 2] No such file or directory: 'netsh'

This is my python Code to see the Devices connected to my WIFI:
import subprocess
meta_data = subprocess.check_output(['netsh', 'wlan', 'show', 'profiles'])
data = meta_data.decode('utf-8', errors="backslashreplace")
data = data.split('\n')
names = []
for i in data:
if "All Users Profiles" in i:
i = i.split(":")
i = i[1]
i = i[1:-1]
names.append(i)
print("Systems Connected To Your WIFI ARE ")
print()
for name in names:
print(name)
AND this is the error I keep getting after i run the code:
FileNotFoundError: [Errno 2] No such file or directory: 'netsh'

You need to call it through the shell using cmd.exe /c or by passing shell=true into check_output. The subprocess package does not run in a shell by default on Windows.
Python 3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 23:11:46) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> subprocess.check_output(["dir"])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
...
FileNotFoundError: [WinError 2] The system cannot find the file specified
>>> subprocess.check_output(["cmd.exe","/c","dir"])
b' ... '
>>> subprocess.check_output(["dir"], shell=True)
b' ... '
This is only something you need to do on Windows.
Python 3.8.0 (default, Oct 28 2019, 16:14:01)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> subprocess.check_output(["ls"])
b' ... '

Inspect lambda code from Python interpreter

this simple python program that is extracted from more complex codebase:
#insp.py
import inspect
L = lambda x: x+1
print("L(10)=" + str(L(10)))
code = inspect.getsource(L)
print(code)
works if i run it from the command line as:
$ python insp.py
If I copy and paste each line in the python interpreter it fails:
d:\>python
Python 3.5.1 (v3.5.1:37a07cee5969, Dec 6 2015, 01:38:48) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import inspect
>>> L = lambda x: x+1
>>> print("L(10)=" + str(L(10)))
L(10)=11
>>> code = inspect.getsource(L)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "d:\Users\Cimino\AppData\Local\Programs\Python\Python35-32\Lib\inspect.py", line 944, in getsource
lines, lnum = getsourcelines(object)
File "d:\Users\Cimino\AppData\Local\Programs\Python\Python35-32\Lib\inspect.py", line 931, in getsourcelines
lines, lnum = findsource(object)
File "d:\Users\Cimino\AppData\Local\Programs\Python\Python35-32\Lib\inspect.py", line 762, in findsource
raise OSError('could not get source code')
OSError: could not get source code
Note that using IPython instead of the plain Python interpreter, it works!
Does anybody know why?
I use Python 3.5 32 bits under Windows7.

It works in IPython because it caches each and every command you enter there using linecache module.
For example:
$ ipy ## Equivalent to ipython --classic
Python 2.7.10 (default, Jul 30 2016, 18:31:42)
Type "copyright", "credits" or "license" for more information.
IPython 3.0.0 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
>>> print a
Traceback (most recent call last):
File "<ipython-input-1-9d7b17ad5387>", line 1, in <module>
print a
NameError: name 'a' is not defined
Notice the <ipython-input-1-9d7b17ad5387> part here, this is something specific to IPython. In normal Python shell you would see <stdin>:
$ python
Python 2.7.10 (default, Jul 30 2016, 18:31:42)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> print a
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
Now let's run your code:
>>> import inspect
>>> L = lambda x: x+1
>>> code = inspect.getsource(L)
Time to find out the filename related to L:
>>> L.func_code.co_filename
'<ipython-input-2-0c0d6f325784>'
Now let's see if we have the source in linecache.cache for this file:
>>> import linecache
>>> linecache.cache[L.func_code.co_filename]
(18, 1481047125.479239, [u'L = lambda x: x+1\n'], '<ipython-input-2-0c0d6f325784>')
So, using this information IPython is able to find the required source but Python shell doesn't because it is not storing any.
The related details about how inspect gets the source can be found in getsourcefile and findsource functions in the source code.

sympy import error in IronPython 2.7

I'm trying to use the sympy library in my python script, but I'm getting an error when I try to import it. How do I fix this?

The library you are using seems to make use of an internal API to get information of the current stack/live objects.
In order to provide the required information and interfaces you have to run IronPython with the -X:FullFrames argument.
Should you plan on hosting IronPython from C# this answer explains the necessary steps.
Instead of the previous situation/error
C:\Program Files (x86)\IronPython 2.7>ipy
IronPython 2.7.5 (2.7.5.0) on .NET 4.0.30319.42000 (32-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys._getframe(0)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute '_getframe'
you will get the expected behavior
C:\Program Files (x86)\IronPython 2.7>ipy -X:FullFrames
IronPython 2.7.5 (2.7.5.0) on .NET 4.0.30319.42000 (32-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys._getframe(0)
<frame object at 0x000000000000002B>

List home directory without absolute path

I'm having problem with listing home directory of current user without knowing absolute path to it. I've tried with the following, but it doesn't work:
[root#blackbox source]# python
Python 2.6.6 (r266:84292, Dec 7 2011, 20:38:36)
[GCC 4.4.6 20110731 (Red Hat 4.4.6-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.listdir('/root')
['python', '.bashrc', '.viminfo']
>>> os.listdir('~')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 2] No such file or directory: '~'
>>>

You need to use the os.path.expanduser() function:
>>> import os.path
>>> os.path.expanduser('~')
'/home/username'

You could ask the Operation System like this:
>>> import os
>>> os.environ['HOME']
'/home/noctua'
>>> os.listdir(os.environ['HOME'])

can't 'import time' in python, get 'AttributeError: struct_time' How to solve?

Running python on Snow Leopard, and I can't import the 'time' module. Works in ipython. Don't have any .pythonrc files being loaded. Scripts that 'import time' using the same interpreter run fine. Have no idea how to troubleshoot this. Anyone have an idea?
[wiggles#bananas ~]$ python2.6
Python 2.6.6 (r266:84292, Sep 1 2010, 14:27:13)
[GCC 4.2.1 (Apple Inc. build 5646) (dot 1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "time.py", line 4, in <module>
t = now.strftime("%d-%m-%Y-%H-%M")
AttributeError: struct_time
>>>
[wiggles#bananas ~]$ ipython-2.6
Python 2.6.6 (r266:84292, Sep 1 2010, 14:27:13)
Type "copyright", "credits" or "license" for more information.
IPython 0.10 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.
In [1]: import time
In [2]:

Look for a file called time.py. It looks like Python is importing that, instead of the one from the standard library:
File "time.py", line 4, in <module>
The solution is to rename the file something other than "time.py".
By the way, you can find the path to the offending file by opening a Python REPL and typing.
In [1]: import time
In [2]: time.__file__
or
In [3]: time # This shows the path as part of the repr