Python

• Python.org
• Reddit Python
• PyVideo.org
• A collection of not-so-obvious Python stuff
• 10 Most Common Python Mistakes
• Hitchhiker's Guide to Python
• http://pythontutor.com
• Gallery of Interesting IPython Notebooks
• A Few of My Favorite [Python] Things
• A Guide to Python's Magic Methods
• The History of Python 
• Theano 
• Numba 
• The Making of Python 
• The History of SciPy  
• Curated list of Python frameworks, libraries
• http://www.fullstackpython.com/

Blogs

• http://jakevdp.github.io/