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Linear Algebra

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1. Vectors

Introduction Position vectors lock_openUnlock all 50+ topics

2. Matrices

Introduction Transpose of matrices lock_openUnlock all 50+ topics

3. Linear equations

System of linear equations Gaussian Elimination lock_openUnlock all 50+ topics

4. Matrix determinant

Introduction Determinant of elementary matrices lock_openUnlock all 50+ topics

5. Vector space

Subspace Relationship between pivots and linear dependence lock_openUnlock all 50+ topics

6. Special matrices

Symmetric matrices Triangular matrices lock_openUnlock all 50+ topics

7. Eigenvalues and Eigenvectors

Introduction Basic properties lock_openUnlock all 50+ topics

8. Orthogonality

Orthogonal projections Orthonormal sets and bases lock_openUnlock all 50+ topics

9. Matrix decomposition

QR decomposition Orthogonal diagonalization lock_openUnlock all 50+ topics

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Looping through key-value pairs in a dictionary in Python

schedule Mar 5, 2023

Last updated

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Python

Example

Consider the dictionary below:


        
        
            
                
                
                    d1 = {"A": 1, "B": 2, "C": 3}

To loop through the key-value pairs:


        
        
            
                
                
                    for key, value in d1.items():
    print("Key:", key)
    print("Value:", value)
    print('\n')
                
            
            Key: A
Value: 1
Key: B
Value: 2
Key: C
Value: 3

The key, value in the above example are temporary variables being used, hence they can be named however you like and they would still serve their purpose.

Published by Arthur Yanagisawa

Edited by 0 others

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