Table of contents

  1. How to import classes defined in
  2. How to import 'GDB' in Python
  3. How to import OpenSSL in python
  4. How to import urlparse in python-3?
  5. How to only import sub module without exec in the package

How to import classes defined in

In Python, you can import classes defined in the file of a package using a few different methods. The file is treated as a regular module, and you can import its contents just like any other module. Here's how you can do it:

Assuming you have a package named "my_package" with the following structure:


Let's say you have a class named MyClass defined in, and you want to import it into another Python script:

Method 1: Import the class directly:

from my_package import MyClass

# Now you can use MyClass in your script
obj = MyClass()

Method 2: Import the class using import with the package name:

import my_package

# Now you can access MyClass as an attribute of my_package
obj = my_package.MyClass()

Both of these methods will allow you to import and use the MyClass class from the file of the "my_package" package in your Python script. Choose the method that best suits your coding style and organization.

How to import 'GDB' in Python

To use GDB (GNU Debugger) in Python, you can use the gdb module, which provides a Python API for interacting with GDB. This module allows you to script and automate GDB commands and manipulate debugging sessions from within your Python script. Here's how you can import and use the gdb module:

  • Make sure you have GDB installed on your system.

  • Create a Python script and import the gdb module at the beginning of your script:

import gdb
  • You can now use the gdb module to interact with GDB and debug processes. For example, you can set breakpoints, inspect variables, and execute GDB commands programmatically from your Python script.

Here's a simple example of how you might use the gdb module to set a breakpoint and inspect a variable:

import gdb

def breakpoint_handler(event):
    if event.stop_reason == gdb.BP_BREAKPOINT:
        print("Breakpoint hit at address:", hex(event.stop_location))
        some_variable = gdb.parse_and_eval("some_variable")
        print("Value of some_variable:", some_variable)

# Set a breakpoint at a specific address
breakpoint = gdb.Breakpoint("*0x80484d6")

# Register the breakpoint handler function
breakpoint.stop = breakpoint_handler

# Start the debugging session (replace 'your_program' with the program you want to debug)
gdb.execute("file your_program")

In this example, we set a breakpoint at a specific address and register a custom handler function to be called when the breakpoint is hit. Inside the handler function, we can access and inspect variables using gdb.parse_and_eval().

How to import OpenSSL in python

To use OpenSSL in Python, you can make use of the ssl module that is part of the Python standard library. This module provides an interface to the OpenSSL library for secure socket communication. Here's how you can import and use ssl in your Python code:

import ssl

# Your code using the ssl module

For example, if you want to create a secure SSL context for making HTTPS requests, you can do something like this:

import ssl
import urllib.request

# Create a secure SSL context
ssl_context = ssl.create_default_context()

# Make an HTTPS request using the secure context
url = ""
response = urllib.request.urlopen(url, context=ssl_context)

# Read and print the response
content =

In this example, the ssl.create_default_context() function creates a secure SSL context, and then the urllib.request.urlopen() function is used to make an HTTPS request using that context.

Keep in mind that the ssl module provides a wide range of functions and classes for working with SSL/TLS encryption and secure communication in Python. You can explore the official Python documentation for the ssl module to learn more about its capabilities and how to use it for your specific needs.

How to import urlparse in python-3?

In Python 3, the urlparse module has been replaced by the urllib.parse module, which provides similar functionality for parsing URLs. To achieve the same functionality as the old urlparse module, you can use the urllib.parse module as follows:

from urllib.parse import urlparse

url = ""
parsed_url = urlparse(url)

print("Scheme:", parsed_url.scheme)
print("Netloc:", parsed_url.netloc)
print("Path:", parsed_url.path)
print("Params:", parsed_url.params)
print("Query:", parsed_url.query)
print("Fragment:", parsed_url.fragment)
print("Username:", parsed_url.username)
print("Password:", parsed_url.password)

The urlparse function in the urllib.parse module works similarly to the old urlparse module and provides a convenient way to split a URL into its components. Just remember to import it from the urllib.parse module instead of the deprecated urlparse module.

How to only import sub module without exec in the package

In Python, when you import a sub-module from a package, the file of the package is typically executed because it's part of the package's initialization process. However, if you want to import a sub-module without executing the file, you can use a specific import style known as "submodule import" or "submodule-only import." This technique is commonly used in situations where you want to load specific parts of a package without running any package-level initialization code.

Here's how you can perform a submodule-only import:

  1. Use the importlib Module (Python 3.1 and later):

    You can use the importlib.import_module function from the importlib module to import a sub-module without executing the file of the package.

    import importlib
    # Import a specific submodule (e.g., 'submodule_name') from the package
    submodule = importlib.import_module('package_name.submodule_name')
    # Now, you can access the submodule's functions and classes without executing

    Replace 'package_name' with the name of your package and 'submodule_name' with the name of the submodule you want to import.

  2. Use the from ... import ... Syntax:

    You can also directly import specific functions, classes, or variables from a submodule without importing the entire package:

    from package_name.submodule_name import specific_function
    # Now, you can use specific_function without executing

    This way, you import only the parts of the submodule that you need.

Using one of these techniques, you can import a sub-module from a package without executing the package's file. This can be useful when you want to isolate the behavior of a sub-module from the package-level initialization.

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