NumPy Cheat Sheet for Python Coding, Data / By Rahman NumPy is a library for the Python programming language which is used for working with multi-dimensional arrays and matrices. This is very useful in large scientific computing. NumPy / SciPy / Pandas Cheat Sheet Select column. Select row by label. Return DataFrame index. Delete given row or column. Pass axis=1 for columns. Reindex df1 with index of df2. Reset index, putting old index in column named index. Change DataFrame index, new indecies set to NaN. Show first n rows. Show last n rows.
NumPy is a library for the Python programming language which is used for working with multi-dimensional arrays and matrices. This is very useful in large scientific computing. Because NumPy ndarrays is way faster compared to a regular python list. Arrays are very frequently used in data science too, where speed and resources are very important. That’s why NumPy is a very handy tool in data-science.
But remembering all the NumPy commands might be overwhelming for both beginners and professionals. So Datalators makes the complex simple.
It’s also a good idea to check the official NumPy documentation from time to time. Even if you can find what you need in the cheat sheet. Reading documentation is a skill every data professional needs. Also, the documentation goes into a lot more detail than we can fit in a single sheet anyway!
Creating Arrays:
Import Export:
![Numpy Array Cheat Sheet Numpy Array Cheat Sheet](https://miro.medium.com/max/402/1*b0Eh1M1w4d9gKIhN8Fdjcg.png)
![Numpy Array Cheat Sheet Numpy Array Cheat Sheet](https://4.bp.blogspot.com/-7OGvqmQ_Qu8/WWcqq7FXVPI/AAAAAAAAI-c/VU7i1m2A0BMdCuIH6WuNJ8pv9D0dBsiugCLcBGAs/s1600/Pandas-2.png)
Numpy Array Cheat Sheet Excel
![Numpy Array Cheat Sheet Numpy Array Cheat Sheet](https://intellipaat.com/mediaFiles/2018/12/Python-NumPy-Cheat-Sheet-1.png)
Inspecting Array:
Data Types:
![Numpy Array Cheat Sheet Numpy Array Cheat Sheet](https://img.17qq.com/images/cclcnonndv.jpeg)
Array Mathematics:
Statistics on NumPy:
Indexing and Slicing
Array Manipulation:
I hope this cheat sheet will be useful to you. No matter you are new to python who is learning python for data science or a data professional. Happy Programming.
You can also download the printable PDF file from here.
Python Array Cheat Sheet
![Cheat Cheat](https://www.edureka.co/blog/wp-content/uploads/2017/06/MultiDimensional-Array.png)
Numpy Array Cheat Sheet Grade
The source code for NumPy is located at this GitHub repository.
You might also be interested in Pandas Cheat Sheet For Data Science In Python.
![](https://cdn-ak.f.st-hatena.com/images/fotolife/r/ruriatunifoefec/20200910/20200910011333.png)