Iron Python - No module named "os"

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I have been trying to debug this sample code, but I am having trouble.

Here is the code:

import System
import get_events_devices
from System.Windows.Forms import *
from System.ComponentModel import *
from System.Drawing import *
from clr import *

class Check: # namespace

    class Form1(System.Windows.Forms.Form):
        """type(_label1) == System.Windows.Forms.Label, type(_button1) == System.Windows.Forms.Button"""
        __slots__ = ['_label1', '_button1']
        def __init__(self):


        @accepts(Self(), bool)
        def Dispose(self, disposing):

            super(type(self), self).Dispose(disposing)

        def InitializeComponent(self):
            self._button1 = System.Windows.Forms.Button()
            self._label1 = System.Windows.Forms.Label()
            # button1
            self._button1.Location = System.Drawing.Point(58, 61)
            self._button1.Name = 'button1'
            self._button1.Size = System.Drawing.Size(75, 23)
            self._button1.TabIndex = 0
            self._button1.Text = 'Click'
            self._button1.UseVisualStyleBackColor = True
            self._button1.Click += self._button1_Click
            # label1
            self._label1.AutoSize = True
            self._label1.Location = System.Drawing.Point(190, 70)
            self._label1.Name = 'label1'
            self._label1.Size = System.Drawing.Size(0, 13)
            self._label1.TabIndex = 1
            # Form1
            self.ClientSize = System.Drawing.Size(292, 273)
            self.Name = 'Form1'
            self.Text = 'Form1'

        @accepts(Self(), System.Object, System.EventArgs)
        def _button1_Click(self, sender, e):

            # Snippet Statement
            # End Snippet Statement
            self._label1.Text = 'mohsin'

I have just added,, and iron python.dll.

From where I get ironpython_module.dll as I have install Iron Python I am not getting this .dll?

Any ideas?

If you are running and debugging the Python code using Visual Studio via the IronPython tools, it might be that your sys.path does not contain a reference to all of the IronPython modules such as os.

In your code, try adding the following to indicate the install directory of IronPython:

import sys
sys.path.append(r"C:\Program Files\IronPython 2.7\Lib")

The above is a workaround for this reported bug.

Ironpython & C# : no module named, The IronPython implementation does not come with xml.parsers.expat . However, there is a workaround. There is a project FePy[^] that provides  The IronPython implementation does not come with xml.parsers.expat.However, there is a workaround. There is a project FePy[] that provides enhancements for IronPython.And xml.parsers.expat is one of them.

In the python scripts, you need explicitly import lib path of

import sys
sys.path.append("C:\\Program Files (x86)\\IronPython 2.7\\Lib\\")

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Try adding the code:

import sys


This code worked for me and resolved the error

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"no module named os" - Deadline, I know ironpython has only the built-in methods though. So following the mentioned instructions in this tread, I installed a regular python 2.6 on  Right click on the project within your solution explorer and select “Manage NuGet Packages…”. In the “Search Online” text field on the top right, search for “IronPython”. Select “IronPython” from within the search results and press the “Install” button. Follow the instructions, and you should be good to go!