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Python Articles
Page 830 of 855
Audio processing using Pydub and Google Speech Recognition API in Python
In this tutorial, we are going to work with the audio files. We will breakdown the audio into chunks to recognize the content in it. We will store the content of the audio files in text files as well. Install the following modules using the below commands.pip install pydubIf you run the above command, you will get the following successful messageCollecting pydub Downloading https://files.pythonhosted.org/packages/79/db/eaf620b73a1eec3c8c6f8f5 b0b236a50f9da88ad57802154b7ba7664d0b8/pydub-0.23.1-py2.py3-none-any.whl Installing collected packages: pydub Successfully installed pydub-0.23.1pip install audioreadIf you run the above command, you will get the following successful message.Collecting audioread Downloading https://files.pythonhosted.org/packages/2e/0b/940ea7861e0e9049f09dcfd 72a90c9ae55f697c17c299a323f0148f913d2/audioread-2.1.8.tar.gz Building wheels for collected packages: audioread Building wheel for audioread ...
Read MoreBarnsley Fern in Python
In this tutorial, we are going to learn about the Barnsley Fern, which is created by Michael Barnsley. The features of Barnsley Fern is similar to the fern shape. It is created by iterating over the four mathematical equations known as Iterated Function System(IFS). The transformation has the following formula.f(x, y)=$$\begin{bmatrix}a & b \c & d \end{bmatrix}\begin{bmatrix}x \y \end{bmatrix}+\begin{bmatrix}e \f \end{bmatrix}$$Source − WikipediaThe values of the variables are −Source − WikipediaThe four equation that Barnsley Fern proposed are −Source − WikipediaNow, we will see code to create the fern shape in Python.Example# importing matplotlib module for the plot import matplotlib.pyplot ...
Read MoreBasic Python Programming Challenges
In this tutorial, we are going to write a solution for a challenge.ChallengeWe have to generate a random set of basic arithmetic operations. The user will give the number of questions, and we have to generate questions. After every question, the user will answer it. At the end of the program, we have to give the score. Let's try it.Example# importing random and operator modules import random import operator # main function # taking number of questions that we have to generate def main(n): print("Welcome to the quizYou should answer floats upto 2 decimals") # initialising score to ...
Read MoreData analysis and Visualization with Python program
In this tutorial, we are going to learn about data analysis and visualization using modules like pandas and matplotlib in Python. Python is an excellent fit for the data analysis things. Install the modules pandas and matplotlib using the following commands.pip install pandaspip install matplotlibYou will get a success message after the completion of the installation process. We will first learn about the pandas and then will see matplotlib.pandasPandas is an open-source library of Python which provides data analysis tools. We are going to see some useful methods from the pandas for data analysis.Creating DataFramesWe need multiple rows to create ...
Read MoreHow can I get a file\'s permission mask using Python?
To get stat of a file, method stat() from the os module can be used. It performs a stat system call on the given path. For example,import os st = os.stat("file.dat")This function takes the name of a file, and returns a 10-member tuple with the following contents:(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime)The mode variable gives you the information about file permissions. You can get it by st[0].
Read MoreHow to generate XML documents with namespaces in Python?
Currently you cannot add namespaces to XML documents directly as it is not yet supported in the in built Python xml package. So you will need to add namespace as a normal attribute to the tag. For example,import xml.dom.minidom doc = xml.dom.minidom.Document() element = doc.createElementNS('http://hello.world/ns', 'ex:el') element.setAttribute("xmlns:ex", "http://hello.world/ns") doc.appendChild(element) print(doc.toprettyxml())This will give you the document,
Read MoreHow to print to the Screen using Python?
The basic way to do output to screen is to use the print statement.>>> print 'Hello, world' Hello, worldTo print multiple things on the same line separated by spaces, use commas between them. For example:>>> print 'Hello, ', 'World' Hello, WorldWhile neither string contained a space, a space was added by the print statement because of the comma between the two objects. Arbitrary data types can also be printed using the same print statement, For example:>>> import os >>> print 1, 0xff, 0777, (1+5j), -0.999, map, sys 1 255 511 (1+5j) -0.999 Objects can be printed on the same line ...
Read MoreExplain the visibility of global variables in imported modules in Python?
Globals in Python are global to a module, not across all modules. (Unlike C, where a global is the same across all implementation files unless you explicitly make it static.). If you need truly global variables from imported modules, you can set those at an attribute of the module where you're importing it.import module1 module1.a=3On the other hand, if a is shared by a whole lot of modules, put it somewhere else, and have everyone import it:global_module.py module1.py: import global_module def fun(): print global_module.var Other files: import global_module import module1 global_module.var = 3 module1.fun()
Read MoreHow to check if a python module exists without importing it?
To check if you can import something in Python 2, you can use imp module with try...except. For example, import imp try: imp.find_module('eggs') found = True except ImportError: found = False print foundThis will give you the output:FalseYou can also use iter_modules from the pkgutil module to iterate over all modules to find if specified module exists. For example, from pkgutil import iter_modules def module_exists(module_name): return module_name in (name for loader, name, ispkg in iter_modules()) print module_exists('scrapy')This will give the output:TrueThis is because this module is installed on my PC.Or if you ...
Read MoreHow to install and import Python modules at runtime?
You can use pip to install packages at runtime and importlib.import_module(moduleName) to import module by using its name as a string. For example,import pip import importlib def import_with_auto_install(package): try: return importlib.import_module(package) except ImportError: pip.main(['install', package]) return importlib.import_module(package) # Example if __name__ == '__main__': scrapy = import_with_auto_install('scrapy') print(scrapy)The above script installs the scrapy module and imports it when installation of the module completes.
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