分类 Technology 中的文章

Accelerating pip and anaconda in China

2021年12月6日 | Technology

Since the default addresses for pip and anaconda are very slow to access in China, adding domestic mirrors for acceleration is necessary.……

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Hands-on Implementation of Random Forest Algorithm with Python

2020年12月28日 | Technology

This tutorial shows how to build a random forest regression workflow with Python and sklearn using Shanghai weather data, covering setup, cleaning, feature engineering, training, evaluation, and prediction.……

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Python String Splitting Guide: split, rsplit, splitlines, partition, and re.split

2020年11月9日 | Technology

This article summarizes the 6 most useful Python string splitting methods, including split, rsplit, splitlines, partition, rpartition, and re.split, with practical examples and usage notes.……

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Python Script to Query Recently Expired Domains

2020年9月22日 | Technology

This article shows how to inspect Aliyun’s domain-reserve requests with Python and automatically collect candidate lists of recently expired .com domains for later manual review and registration.……

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Python3 Solution to LeetCode Medium Problem 468: Validate IP Address

2020年7月29日 | Technology

This guide explains how to solve LeetCode 468 in Python by combining the ipaddress module with the stricter problem-specific rules for IPv4 and IPv6.……

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How to Properly Make Venn Diagrams Using Python Packages

2020年7月8日 | Technology

In Venn diagrams of two sets, there can be two (or more) overlapping circles representing sets of different sizes, but the circles are the same size. Actually, the circles should be proportional to the size of the sets, and the overlapping area should also be proportional to the data overlap.……

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Calculating the Gini Coefficient and Plotting the Lorenz Curve with matplotlib

2020年5月31日 | Technology

The Gini coefficient and Lorenz curve are widely used to represent data inequality, especially wealth inequality. However, currently in Python, there isn’t a very good function to directly plot the Lorenz curve. Since the current project requires it, this article records how to use numpy, pandas, matplotlib, and other packages to calculate the Gini coefficient and plot the Lorenz curve for practical use.……

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Bayesian Theory and Practical Python Applications

2020年5月31日 | Technology

Bayesian theory provides a principled method for calculating conditional probabilities. With it, we can easily compute conditional probabilities for events where intuition often fails.……

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Fetching Stock Data Using Python's yfinance Package

2020年5月9日 | Technology

Historical stock data is a very important kind of time series data, playing a significant role in data science. Let’s start learning how to handle time series data, preparing for future stock prediction and analysis.……

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Using folium to Draw a COVID-19 Pandemic Map

2020年5月3日 | Technology

This guide shows how to use Python folium to build a global choropleth map from public COVID-19 data, including WHO data loading, country-code mapping, and log-based styling for better readability.……

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Mounting Oracle Object Storage using s3fs-fuse

2020年5月1日 | Technology

This guide shows how to mount Oracle Object Storage on Linux with s3fs-fuse, including namespace and region lookup, credential setup, the mount command, and a simple post-mount verification step.……

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Efficient Ways to Check If a List or Tuple Is Empty in Python

2020年4月28日 | Technology

In Python, to check whether an array or tuple is empty, there are three methods: comparing with an empty list, checking the length, and using an if statement.……

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