Dev2Py

Lock PDF using Python step-by-step  Method - 1 To lock a PDF file using Python, you can use the PyPDF2 library. The following steps outline the process: Install the PyPDF2 library: Copy code pip install PyPDF2 Open the original PDF file and create a new PdfFileReader object: makefile Copy code pdf_file = open("original.pdf", "rb") pdf_reader = PyPDF2.PdfFileReader(pdf_file) Create a new PdfFileWriter object to store the locked version of the PDF file: makefile Copy code pdf_writer = PyPDF2.PdfFileWriter() Loop through each page of the original PDF file and add it to the new PdfFileWriter object: scss Copy code for page_num in range(pdf_reader.numPages):     page = pdf_reader.getPage(page_num)     pdf_writer.addPage(page) Encrypt the new PdfFileWriter object with a password: python Copy code pdf_writer.encrypt("password") Save the locked PDF file: lua Copy code locked_pdf = open("locked.pdf", "wb") pdf_writer.write(locked_pdf) Close both...

Extract audio from video using python step by step  Method -1 To extract audio from a video file using Python, you can use the pydub library. The following is a step-by-step process to extract audio from a video file: Install the pydub library by running the following command in your terminal or command prompt:      pip install pydub Import the required modules: python Copy code      from pydub import AudioSegment Load the video file using the AudioSegment.from_file method: python Copy code     video = AudioSegment.from_file ( " video.mp4 " , format = " mp4 " ) Use the export method to save the audio as a separate file: python Copy code     video.export ( " audio.wav " , format = " wav " ) Here is the complete code: python Copy code     from pydub import AudioSegment     video = AudioSegment.from_file ( " video.mp4 " ,      format = " mp4 " )     video.export ( " audio.wav " , form...

Here's a step-by-step example of how to merge multiple PDFs using PyMuPDF (fitz) in Python: Install the fitz library: Copy code pip install PyMuPDF Import the fitz library in your Python script: python Copy code import fitz Create a new fitz PDF object to store the merged PDF: python Copy code merger = fitz.open() Loop through the list of PDFs you want to merge: sql Copy code pdf_list = ['file1.pdf', 'file2.pdf', 'file3.pdf'] for pdf in pdf_list:     # Open each PDF     doc = fitz.open(pdf)     # Insert the contents of each PDF into the merger     merger.insert_pdf(doc)     # Close the PDF     doc.close() Save the merged PDF to a file: python Copy code merger.save("output.pdf") The complete code would look like this: python Copy code import fitz def merge_pdfs(pdf_list, output):     # Create a PDF object to write the merged PDF to     merger = fitz.open()     # Loop through all PDFs in the list ...

YouTube video download using python step by step  Here's an example of how to download a video from YouTube using Python: Install the pytube library using pip: Copy code pip install pytube Import the pytube library in your Python script: Copy code from pytube import YouTube Create a YouTube object with the video URL: Copy code yt = YouTube("https://www.youtube.com/watch?v=dQw4w9WgXcQ") Select the video stream with the desired resolution and file type: Copy code stream = yt.streams.filter(progressive=True, file_extension='mp4').first() Download the video: Copy code stream.download() This will download the video in the current working directory with the highest resolution and the file type mp4. You can also use other libraries such as pafy,youtube_dl and etc. You may also want to customize the video quality, file format, and other properties of the video. The pytube library provides many options for customizing the properties of the video, check the docu...

YouTube video to mp3 download using python step by step  Here's an example of how to download the audio of a YouTube video as an MP3 file using Python: Install the pytube and pydub libraries using pip: Copy code pip install pytube pydub Import the pytube and pydub libraries in your Python script: Copy code from pytube import YouTube from pydub import AudioSegment Create a YouTube object with the video URL: Copy code yt = YouTube("https://www.youtube.com/watch?v=dQw4w9WgXcQ") Select the audio stream with the desired file type: Copy code audio_stream = yt.streams.filter(only_audio=True, file_extension='mp4').first() Download the audio stream to a file: Copy code audio_stream.download() Use the pydub library to convert the audio stream from mp4 to mp3: Copy code audio = AudioSegment.from_file("audio_stream.mp4", format="mp4") audio.export("audio_stream.mp3", format="mp3") This will download the audio of the video in...

Language Translator using python step by step  Here's an example of how to translate text using Python: Install the googletrans library using pip: Copy code pip install googletrans Import the googletrans library in your Python script: Copy code from googletrans import Translator Create an instance of the Translator object: Copy code translator = Translator() Use the translate() function to translate text: Copy code text = "Hello World!" translation = translator.translate(text, dest='fr') print(translation.text) This will output "Bonjour le monde!" which is the French translation of "Hello World!". The dest parameter of the translate() function is used to specify the target language. You can use any language code that is supported by the Google Translate API. You can also use other libraries such as googletransx,translate and etc. Please note that the googletrans library uses the Google Translate API to translate text, and you need t...

Pdf to document type using python  Here is a step-by-step guide on how to convert a PDF file to a text document using Python and the PyPDF2 library: Install the PyPDF2 library by running pip install pypdf2 in your command line. Create a new Python script and import the PyPDF2 library by adding the following line at the top of your script: import PyPDF2 Open the PDF file using the open() function. You will need to specify the file path and the mode "rb" (read binary) as an argument. Here's an example of how to do this: Copy code with open("example.pdf", "rb") as file:     pdf = PyPDF2.PdfFileReader(file) Iterate over each page of the PDF using a for loop and the numPages attribute of the PdfFileReader object. Extract the text from each page using the getPage() method and the extractText() method. Here's an example of how to do this: Copy code for page in range(pdf.numPages):         text = pdf.getPage(page).extractText() Create a...

Empty recycle bin using python step by step  Here is a step-by-step guide on how to empty the recycle bin using Python on Windows: Import the os module by adding the following line at the top of your script: import os Use the os.system() method to call the command line command "del /f /s /q C:\$Recycle.bin" to delete the files and folders in the recycle bin. Here's an example of how to do this: Copy code os.system('del /f /s /q C:\\$Recycle.bin') You can also use the send2trash() function from the send2trash library to move the files from recycle bin to trash. Copy code from send2trash import send2trash os.chdir('C:\\$Recycle.bin') for folder in os.listdir():     for file in os.listdir(folder):         send2trash(file) If you want to empty recycle bin of all the drives in the system, you can use the following code snippet. Copy code import ctypes ctypes.windll.shell32.SHEmptyRecycleBinW(None, None, 0) Note that, the above code will only wor...

Url shorter with python and examples step by step  Here is a step-by-step guide on how to create a URL shortener using Python: Import the requests library by adding the following line at the top of your script: import requests Create a function that takes a URL as an input and returns the shortened version of the URL using an API service such as Bitly or TinyURL. Here is an example of how to use the Bitly API to shorten a URL: Copy code def shorten_url(url):     access_token = "YOUR_ACCESS_TOKEN" # Replace with your Bitly access token     endpoint = "https://api-ssl.bitly.com/v4/shorten"     headers = {"Authorization": "Bearer " + access_token}     data = {"long_url": url}     response = requests.post(endpoint, json=data, headers=headers)     if response.status_code == 200:         return response.json()["link"]     else:         return None Use the shorten_url...

Find location using IP address in python step by step  Here is a step-by-step guide on how to find the location of an IP address using Python: Install the geopy library by running pip install geopy in your command line. Create a new Python script and import the geopy library by adding the following line at the top of your script: from geopy.geocoders import Nominatim Create an instance of the geolocator object using Nominatim Copy code geolocator = Nominatim(user_agent="geoapiExercises") Use the geolocator.geocode() method to get the location information for an IP address. The method takes a string argument representing the IP address or hostname and returns a Location object, which has attributes such as latitude, longitude, and address. Copy code ip = '8.8.8.8' location = geolocator.geocode(ip) print(location.latitude, location.longitude) You can also use the reverse method to get the address of the location. Copy code address = geolocator.reverse(locati...

Barcode generating using python step by step  Here is a step-by-step guide on how to generate a barcode using Python: Install the python library for generating barcode using pip: pip install barcode. Create a new Python script and import the barcode library by adding the following line at the top of your script: import barcode Create an instance of the barcode type you want to generate. For example, if you want to generate a Code128 barcode, you can use the following code: Copy code from barcode import Code128 barcode = Code128("123456789") Create the barcode image using the save() method. You will need to specify the file path and the file type as an argument. Here's an example of how to do this: Copy code barcode.save("barcode") You can also create the barcode image in memory using the render() method. Copy code from io import BytesIO stream = BytesIO() barcode.render(stream) Finally, you can display the barcode using any library such as matplotlib...

Pdf to audio in python step by step  Here's an example of how to convert a PDF to audio using Python: Install the PyPDF3 library using pip: Copy code pip install pypdf3 Import the PyPDF2 library in your Python script: Copy code import PyPDF3 Open the PDF file using the PyPDF3 library: Copy code pdf_file = open('document.pdf', 'rb') pdf_reader = PyPDF3.PdfFileReader(pdf_file) Loop through all the pages of the PDF and extract the text: Copy code text = "" for i in range(0, pdf_reader.numPages):     page = pdf_reader.getPage(i)     text += page.extractText() Close the PDF file Copy code pdf_file.close() Now that you have the text of the PDF, you can convert it to speech using the gTTS library: Copy code from gtts import gTTS tts = gTTS(text, lang='en') tts.save("audio.mp3") This will save the audio file "audio.mp3" with the text of the PDF converted to speech. Complete code of PDF to Audio in Python         import PyPDF3       ...

QR code generating using python step by step  Here's an example of how to generate a QR code using Python: Install the qrcode library using pip: Copy code pip install qrcode Import the qrcode library in your Python script: Copy code import qrcode Create a QR code object, specifying the data you want to encode: Copy code qr = qrcode.QRCode(version=1, box_size=10, border=5) qr.add_data("Hello World!") qr.make(fit=True) Generate the QR code image: Copy code img = qr.make_image(fill_color="black", back_color="white") Save the QR code image to a file: Copy code img.save("qr_code.png") Now you have successfully generated a QR code image "qr_code.png" which contains the data "Hello World!". You can also use other libraries such as qrtool,qrcodegen and etc. You can also customize the QR code with different colors, size, and logo. Please check the documentation of the library for more information: https://pypi.org/proje...

Language detection using python step by step  Here's an example of how to detect the language of a given text using Python: Install the langdetect library using pip: Copy code pip install langdetect Import the langdetect library in your Python script: Copy code from langdetect import detect Define the text you want to detect the language of: Copy code text = "Bonjour, comment allez-vous?" Use the detect() function from the langdetect library to detect the language of the text: Copy code language = detect(text) print(language) This will output: "fr" which is the language of the text. You can also use other libraries such as langid, langdetectpy, langdetect and etc. Please note that the langdetect library is based on character n-grams and it may not be able to accurately detect some languages with a small amount of text or low-resource languages. Also, the library needs to download the language detection model to work, so it needs internet connection t...

Pdf to TFF in python step by step  Here's an example of how to convert a PDF to TIFF using Python: Install the Wand library using pip: Copy code pip install Wand Import the Wand library in your Python script: Copy code from wand.image import Image Open the pdf file using the Image function of wand library, and then convert the pdf to tiff Copy code with Image(filename='document.pdf', resolution=300) as img:     img.format = 'tiff'     img.save(filename='document.tiff') This will save the TIFF file named "document.tiff" with the content of the PDF file. You can also use other libraries such as PyPDF2, PyMuPDF, pdf2image and etc. Please note that the resolution of the TIFF image can be changed by adjusting the resolution parameter, and TIFF support multiple pages, so all pages of the PDF will be converted to TIFF. You can check the official documentation of the wand library for more information: http://docs.wand-py.org/en/latest/

Voice recorder in python step by step with example   Here is a step-by-step guide on how to create a simple voice recorder using Python: Install the sounddevice and numpy libraries by running pip install sounddevice numpy in your command line. Create a new Python script and import the sounddevice and numpy libraries by adding the following lines at the top of your script: Copy code import sounddevice as sd import numpy as np Set the recording parameters, such as the sample rate, number of channels, and the length of the recording. For example, you can set the sample rate to 44100 Hz and the number of channels to 1 (mono) for a 10-second recording: Copy code fs = 44100 # Sample rate channels = 1 # Number of channels duration = 10 # Recording duration in seconds Use the sounddevice.rec() function to start the recording. The function takes a few parameters, such as the number of samples to record and the sample rate, and returns the recorded data as a NumPy array. The f...

Python Tools for Managing Virtual Environments There are several popular tools for managing virtual environments in Python, including: virtualenv: A tool for creating isolated Python environments. venv: A built-in module in Python 3 for creating virtual environments. conda: A cross-platform package and environment manager that can be used to manage Python environments as well as environments for other languages like R and Perl. pipenv: A tool that aims to bring the best of all packaging worlds (bundler, composer, npm, cargo, yarn, etc.) to the Python world. poetry: A tool to manage dependencies and packaging for Python projects All these tools can be used to create isolated environments for different projects and manage dependencies. Each tool has its own unique features and use cases, and the best choice depends on the specific needs of your project. Example   here's some sample code for creating and using a virtual environment in Python using the venv module: Copy cod...

Convert PDF Files to PPT Files in Python. There are several libraries in Python that can be used to convert PDF files to PPT. One popular library for this task is python-pptx. Here's an example of how to use python-pptx to convert a PDF file to a PowerPoint presentation:     1. First, install the python-pptx library: Copy code pip install python-pptx     2. Next, import the necessary modules: Copy code from pptx import Presentation from pptx.util import Inches     3. Create a new PowerPoint presentation: Copy code prs = Presentation()     4. To convert the pdf file to image, you will also need to install additional library 'pillow' Copy code pip install pillow     5. Import the necessary modules from pillow Copy code from PIL import Image     6. Open the PDF file and convert it to an image using pillow Copy code with open("sample.pdf", "rb") as pdf_file:     img = Image.open(pdf_file)     7. Add the image to...

How to build a CRUD application using Flask (Python Framework) Here's a simple example of how to create a CRUD application using Flask and SQLAlchemy (a popular Python ORM library):     1. First, you'll need to set up a new Flask project and install the required packages (Flask, Flask-SQLAlchemy, and a database driver). Copy code  # create a new directory for your project and navigate to it mkdir myproject cd myproject # create a virtual environment and activate it python3 -m venv venv source venv/bin/activate # install the required packages pip install flask flask-sqlalchemy     2. Next, create a new file app.py in your project directory and import the necessary         modules: Copy code  from flask import Flask, render_template, request, redirect from flask_sqlalchemy import SQLAlchemy     3. Initialize your Flask application and configure the database: Copy code app = Flask(name) app.config['SQLALCHEMY_DATABASE_URI'] =...

Instagram Automation Python There are several libraries and frameworks available in Python that can be used to automate tasks on Instagram. Some popular options include: instabot: A Python library that provides a simple and easy-to-use interface for automating tasks on Instagram. It supports features such as liking, commenting, and following. python-instagram: A Python wrapper around the Instagram API that allows developers to interact with the Instagram platform programmatically. selenium: A web testing library that can be used to automate browser interactions. It can be used to automate tasks on Instagram by controlling a web browser (e.g. Chrome or Firefox) and interacting with the Instagram website. It's important to notice that Instagram has strict rules about automating actions on their platform and you should be careful when using these libraries to avoid getting your account banned. Requirements : To use the instabot library to automate tasks on Instagram, you w...