5 Data Science Libraries For Python Every Data Scientist Should Use

Python, as a language, has become the need of the hour. It does everything from building, managing and automating websites to analyzing and processing data. Its most authentic features appear when data analysts, data engineers, and data scientists trust Python to auction their data.

The name Python has become synonymous with data science, as it is widely used to manage and learn from burgeoning data forms.

Its library series is just the tip of the iceberg; many data scientists are starting to use available libraries with the click of a button.

How Can Python Libraries Help With Data Science?

Python is a versatile, multi-faceted programming language that continues to appease people with its easy-to-use syntax, wide ranges of goal-specific libraries, and a long list of analytical features.

Most Python libraries come in handy for performing detailed analysis, visualizations, numerical computation, and even machine learning. Since data science is all about data analysis and scientific computation, Python has found a new home for itself within it.

Some of the best data science libraries include:

  • the pandas
  • NumPy
  • Scikit-Learn
  • Matplotlib
  • Seaborn

Let’s discuss each library to see what each option offers budding data scientists.


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1. The pandas

Python Data Analysis Library or Pandas is probably one of the most commonly used libraries in Python. Its flexibility, agility, and suite of functions have made it one of Python’s most popular libraries.

Since data science begins with the management, manipulation and analysis of data, the Pandas library is supporting to make its functionality even more useful. The library is all about reading, manipulating, aggregating and visualizing data and converting everything into an easy to understand format.

You can connect CSV, TSV or even SQL databases and create a data frame with Pandas. A database is relatively symmetrical to a statistical software table or even to an Excel spreadsheet.

Pandas in brief

Here are a few things that encompass the functionality of Pandas in a nutshell:

  • Index, manipulate, rename, sort and merge data sources in data blocks
  • You can easily add, update or remove columns from a data frame
  • Assign missing files, manage missing data or NANs
  • Plot your data frame information with histograms and boxplots

In short, the Pandas library forms the foundation upon which the very essence of Python’s data science concepts rests.

Related: Pandas Operations For Beginners

2. Numpy

As the name suggests, NumPy is widely used as an array processing library. Since it can handle multidimensional array objects, it is used as a container for multidimensional data evaluations.

NumPy libraries consist of a series of elements, each of which is of the same data type. Ideally, a tuple of positive integers separates these data types. The dimensions are called axes, while the number of axes is called ranks. An array in NumPy is classified as ndarray.

If you need to perform various statistical calculations or work on different mathematical operations, NumPy will be your first choice. When you start working with arrays in Python, you realize how well your calculations are working and the whole process is transparent, as the evaluation time drops significantly.

What can you do with NumPy?

NumPy is the friend of any data scientist, simply for the following reasons:

  • Perform basic array operations like add, subtract, slice, flatten, index, and reshape arrays
  • Use tables for advanced procedures, including stacking, splitting, and serving
  • Work with linear algebra and date / time operations
  • Exercise the statistical capabilities of Python with the functions of NumPy, all with one library

Related: NumPy Operations For Beginners

3. Scikit-Learn

Machine learning is an integral part of the life of a data scientist, especially since almost all forms of automation seem to derive their foundations from the effectiveness of machine learning.

Scikit-Learn is effectively Python’s native machine learning library, which provides data scientists with the following algorithms:

  • SVM
  • Random forests
  • Grouping of K-means
  • Spectral aggregation
  • average offset, and
  • Cross validation

This is because SciPy, NumPy, and other related science packages within Python draw inferences from Scikit-Learn. If you’re working with the nuances of supervised and unsupervised learning algorithms in Python, you should look to Scikit-Learn.

Immerse yourself in the world of supervised learning models, including Naive Bayes, or just bundle unlabeled data with KMeans; the choice is yours.

What can you do with Scikit-Learn?

SciKit-Learn is a very different ball game, as its functionality is quite different from the rest of the libraries with Python.

Here is what you can do with this Scikit-Learn

  • Classification
  • Grouping
  • Regression
  • Dimensional reduction
  • Model selection
  • Data pre-processing

Since the discussion moved away from importing and manipulating data, it is essential to note that Scikit-Learn models data and do manipulate in any form. An important aspect of machine learning models is the inferences drawn from these algorithms.

4. Matplotlib

Visualizations can place your data, help you create stories, 2D figures, and embed plots in apps, all with the Matplotlib library. Data visualization can take many forms, ranging from bar charts, scatter plots, bar charts, area charts, and even pie charts.

Each plotting option has its unique relevance, taking the whole idea of ​​data visualization up a notch.

Additionally, you can use the Matplotlib library to create the following chart shapes with your data:

  • Pie charts
  • Stem plots
  • Contour graphics
  • Quiver plots
  • Spectrograms

5. Birth of the sea

Seaborn is another data visualization library within Python. However, the relevant question is how does Seaborn differ from Matplotlib? Even though both packages are marketed as data visualization packages, the real difference is in the type of visualizations you can perform with these two libraries.

For starters, with Matplotlib you can only create basic charts, including bars, lines, areas, point clouds, etc. However, with Seaborn, the visualization level is increased a notch, as you can create a variety of visualizations with less complexity and less syntax.

In other words, you can work on your visualization skills and develop them according to your task requirements with Seaborn.

How does Seaborn help you?

  • Determine your relationships between various variables to establish a correlation
  • Calculate aggregate statistics with categorical variables
  • Draw linear regression models to develop dependent variables and their relationships
  • Draw multi-trace grids to derive high-level abstractions

Related: How To Learn Python For Free

Work smart with Python libraries

The open source nature of Python and its package-based efficiency greatly helps data scientists perform various functions with their data. From importing and analysis to visualizations and machine learning adaptations, there is something for every type of programmer.

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About the Author

Sean N. Ayres