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  • Pandas

    Resolving TypeError: ufunc isnan not supported for the input types

    July 27, 2025

    When working with Seaborn heatmaps, encountering the error “TypeError: ufunc ‘isnan’ not supported for the input types” is frustrating but easily resolved. This error occurs when your DataFrame contains non-numeric data that Seaborn attempts to process as numbers. The solution requires identifying the problematic columns and converting them to appropriate numeric types.

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  • numpy - Pandas

    Python in Cryptocurrency Analysis

    March 17, 2024

    Cryptocurrency analysis is the process of studying various aspects of digital currencies to make informed investment decisions. Python, with its extensive and powerful libraries, is a popular choice for cryptocurrency analysis due to its:

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  • numpy - Pandas

    Risk Management Models in Python

    February 24, 2024

    Risk management is a crucial aspect of financial analysis and business operations, focusing on identifying, analyzing, and mitigating potential risks. Python, with its extensive libraries and tools, has become a powerful asset in developing and implementing risk management models. We show how we use Python to build effective risk management strategies.

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  • Pandas

    TypeError: ufunc ‘add’ did not contain a loop with signature matching types

    May 19, 2023

    If you are working with pandas and numpy, you might encounter a TypeError like this: TypeError: ufunc ‘add’ did not contain a loop with signature matching types dtype (‘S21’) dtype (‘S21’) dtype (‘S21’) This error means that you are trying to add two arrays with incompatible data types. For example, you might have an array of strings and an array of numbers, and you want to concatenate them with a separator character.

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  • Seaborn - matplotlib - numpy - Pandas

    How to create Seaborn Heatmap

    December 29, 2021

    Learn how to create heatmaps in Seaborn with annotations, color maps, clustering, and data visualization.

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  • Seaborn - matplotlib - Pandas

    How to create a BarPlot in SeaBorn?

    December 27, 2021

    Learn how to create bar plots in Seaborn with data aggregation, customization, and styling options.

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Resources

  • Matplotlib Master Hub + Recipes
  • OpenCV Master Hub + Recipes
  • Seaborn Master Hub + Recipes
  • Tkinter Master Hub + Patterns
  • SciPy Optimize Cookbook (minimize, least_squares, linprog)
  • Plotly Maps & Geo Cookbook
  • Paramiko Master Hub + Production Cookbook
  • NumPy Master Hub + Cheatsheets
  • Ultimate Python Cheatsheet + Gotchas
  • Django Master Hub + Recipes

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RSS RSS

  • Matplotlib vs Seaborn: Which Library Should You Use?
  • Seaborn Pair Plots: Multivariate Relationship Visualization
  • Django Messages Framework: User Feedback Done Right
  • Seaborn Distribution Plots: Histograms, KDE And Rug Plots
  • Plotly Animated Line Chart: Visualizing Change Over Time
  • Plotly Box Plot And Violin Plot: Statistical Distributions
  • Seaborn FacetGrid Tutorial: Small Multiples For Data Stories
  • Django Form Validation: Custom Validators And Error Handling
  • Seaborn vs Plotly: Choosing the Right Visualization Library
  • Django Model Relationships: ForeignKey, ManyToMany, OneToOne Explained
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