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Python Articles
Page 771 of 852
How can Keras be used to extract features from only one layer of the model using Python?
Tensorflow is a machine learning framework that is provided by Google. It is an open-source framework used in conjunction with Python to implement algorithms, deep learning applications, and much more. It is used in research and for production purposes. It has optimization techniques that help in performing complicated mathematical operations quickly. This is because it uses NumPy and multi-dimensional arrays. These multi-dimensional arrays are also known as ‘tensors’. The framework supports working with deep neural networks.The ‘TensorFlow’ package can be installed on Windows using the below line of code −pip install tensorflowTensor is a data structure used in TensorFlow. It ...
Read MoreHow can Keras be used for feature extraction using a sequential model using Python?
Tensorflow is a machine learning framework that is provided by Google. It is an open-source framework used in conjunction with Python to implement algorithms, deep learning applications and much more. It is used in research and for production purposes. It has optimization techniques that help in performing complicated mathematical operations quickly.The ‘TensorFlow’ package can be installed on Windows using the below line of code −pip install tensorflowTensor is a data structure used in TensorFlow. It helps connect edges in a flow diagram. This flow diagram is known as the ‘Data flow graph’. Tensors are nothing but a multidimensional array or ...
Read MoreWhat is a common debugging workflow while creating a model using Keras in Python?
Tensorflow is a machine learning framework that is provided by Google. It is an open-source framework used in conjunction with Python to implement algorithms, deep learning applications and much more. It is used in research and for production purposes. It has optimization techniques that help in performing complicated mathematical operations quickly.This is because it uses NumPy and multi-dimensional arrays. These multi-dimensional arrays are also known as ‘tensors’.The ‘TensorFlow’ package can be installed on Windows using the below line of code −pip install tensorflowKeras means ‘horn’ in Greek. Keras was developed as a part of the research for the project ONEIROS ...
Read MoreHow can Keras be used to create a model where the input shape of model is specified in advance?
Tensorflow is a machine learning framework that is provided by Google. It is an open-source framework used in conjunction with Python to implement algorithms, deep learning applications and much more. It is used in research and for production purposes.Keras was developed as a part of the research for the project ONEIROS (Open-ended Neuro-Electronic Intelligent Robot Operating System). Keras is a deep learning API, which is written in Python. It is a high-level API that has a productive interface that helps solve machine learning problems.It runs on top of the Tensorflow framework. It was built to help experiment in a quick ...
Read MorePython Generate QR Code using pyqrcode module?
A QR code consists of black squares arranged in a square grid on a white background, which can be read by an imaging device such as a camera. It is widely used for many commercial tracking applications and payment and website login etc. for various applications aimed at mobile-phone users. The pyqrcode module is used to generate the qrcocode in python. There are four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently.Alphanumeric qrcodeWe use the pyqrcode module. It has the cerate function which will be used to generate the qrcode. Finally we save it as a ...
Read MorePython file parameter in print()?
The regular use of the print() function is to display text either in the command-line or in the interactive interpreter. But the same function can also write into a file or an output stream.Printing to fileIn the example we can open a file with a new filename in write mode then mention that filename in the print function. The value to be written to the file can be passed as arguments into the print function.ExampleNewfile= open("exam_score.txt", "w") # variables exam_name = "Degree" exam_date = "2-Nov" exam_score = 323 print(exam_name, exam_date, exam_score, file=Newfile , sep = ", ") ...
Read MorePython Convert nested dictionary into flattened dictionary?
As the world embraces more unstructured data, we come across many formats of data where the data structure can be deeply nested like nested JSONS. Python has the ability to deal with nested data structure by concatenating the inner keys with outer keys to flatten the data. In this article we will take a nested dictionary and flattened it.Using a recursive approachIn this approach we design a function to recursively process each item in the dictionary. We pass the dictionary, design a place holder for the output dictionary, the key and separator as parameters. We use the isinstance to check ...
Read MoreMemory-mapped file support in Python (mmap)?
When you read a file object to a python program and want to modify, it can be done in two ways. First way is to modify the content in the physical storage drive where the file is located and the second way is to modify it directly in the memory or Ram of the system. In this article we will see how to read ,search and modify the content of a file object using the mmap module available in python. Instead of making system calls such as open, read and lseek to manipulate a file, memory-mapping puts the data of ...
Read MoreHyperText Markup Language support in Python?
Python has the capability to process the HTML files through the HTMLParser class in the html.parser module. It can detect the nature of the HTML tags their position and many other properties of the tags. It has functions which can also identify and fetch the data present in an HTML file.In the below example we see how to use the HTMLParser class to create a custom parser class which can only process the tags and data that we define in the class. Here we are processing the start tag, end tag and data.Below is the html which is getting processed ...
Read MorePython Get the real time currency exchange rate?
Python is very good at handling API calls. In this article we will see how we can handle the API calls for currency exchange rates in real time as well as historical.Using forex-pythonThis module provides the most direct way of getting the currency conversion rates. It has functions and parameters which can take inputs for the required currency codes and then give the result for the conversion. The below example gives the live conversion rate.Examplefrom forex_python.converter import CurrencyRates c = CurrencyRates() print(c.get_rate('USD', 'GBP'))OutputRunning the above code gives us the following result −0.7357387755Historical currency ratesWe add a datetime object ...
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