Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Numpy Beginner's Guide (Update)
  • Table Of Contents Toc
  • Feedback & Rating feedback
Numpy Beginner's Guide (Update)

Numpy Beginner's Guide (Update)

By : Ivan Idris
2 (1)
close
close
Numpy Beginner's Guide (Update)

Numpy Beginner's Guide (Update)

2 (1)
By: Ivan Idris

Overview of this book

This book is for the scientists, engineers, programmers, or analysts looking for a high-quality, open source mathematical library. Knowledge of Python is assumed. Also, some affinity, or at least interest, in mathematics and statistics is required. However, I have provided brief explanations and pointers to learning resources.
Table of Contents (16 chapters)
close
close
14
C. NumPy Functions' References
15
Index

Time for action – assigning values to variables

Assigning values to variables in Python works in a similar way to most programming languages.

  1. For instance, assign the value of 2 to a variable named var as follows:
    >>> var = 2
    >>> var
    2
    
  2. We defined the variable and assigned it a value. In this Python code, the type of the variable is not fixed. We can make the variable in to a list, which is a built-in Python type corresponding to an ordered sequence of values. Assign a list to var as follows:
    >>> var = [2, 'spam', 'eggs']
    >>> var
    [2, 'spam', 'eggs']
    

    We can assign a new value to a list item using its index number (counting starts from 0). Assign a new value to the first list element:

    >>> var
    ['ham', 'spam', 'eggs']
    
  3. We can also swap values easily. Define two variables and swap their values:
    >>> a = 1
    >>> b = 2
    >>> a, b = b, a
    >>> a
    2
    >>> b
    1
    

What just happened?

We assigned values to variables and Python list items. This section is by no means exhaustive; therefore, if you are struggling, please read Appendix B, Additional Online Resources, to find recommended Python tutorials.

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY